Alphard - Body Electrical

Alphard - Body Electrical
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MPX System Lighting Wiper and Washer Air Conditioning Parking Assist / Monitoring Power Window System Power Slide Door System Power Back Door System Entry & Start System SRS Airbag System Twin Moon Roof System

MPX (Multiplex Communication) System
Alphard - Body Electrical MPX (Multiplex Communication) System Overall MPX on New ALPHARD uses 2 communication protocols, CAN and LIN of which CAN is mainly used for communication on this system [Major Difference] New ALPHARD Previous Model Protocol CAN and LIN BEAN only CAN 4 buses configuration (V bus No. 1, No. 2, Local and MS bus) N.A. LIN 4 buses configuration BEAN 1 bus configuration Gateway ECU Built-in Main Body ECU (Between V bus No. 1 and MS bus) Network Gateway ECU (Between V bus No. 1 and No. 2)

MPX System System Diagram (CAN) *: with model TCM V Bus (Local) V Bus No. 2 AFS ECU ECM Accessory Gateway Skid Control ECU Airbag Sensor Assembly Network Gateway ECU V Bus No. 1 Yaw Rate and Acceleration Sensor Main Body ECU A/C Amplifier Steering Angle Sensor Power Steering ECU Combination Meter DLC3 MS Bus CAN 4 buses configuration (V bus No. 1, No. 2, Local and MS bus) Main Body ECU and Network Gateway ECU have a gateway function - Main Body ECU transmits a data between V bus No. 1 and MS bus. - Network Gateway ECU transmits a data between V bus No. 1 and V bus No. 2. Terminating Register location V Bus No. 1: ECM and Combination Meter (Meter ECU) V Bus No. 2: Network Gateway ECU and Junction Block V Bus Local: ECM and TCM (ECT ECU) MS Bus: Main Body ECU and Combination Meter (Meter ECU) Optional ECUs: Power Back Door ECU Power Back Door Unit* Power Slide Door ECU LH Clearance Warning ECU Outer Mirror Control Switch Certification ECU Position Control ECU and Switch Power Slide Door ECU RH V Bus (500 kbps) Main Wire [ : CANH / : CANL] Branch Wire : Junction Connector : with Gateway Function : Terminating Register (120 ohm) MS Bus (250 kbps)

MPX System System Diagram (LIN) Multiplex Network Master Switch Assembly AFS ECU Front Power Window ECU RH Front Power Window ECU LH Rear Power Window ECU RH Rear Power Window ECU LH Sliding Roof ECU Headlight Unit (LH) Headlight Unit (RH) Heater Control Panel Ultrasonic Sensor (FR) Ultrasonic Sensor (RL) Main Body ECU A/C Amplifier Rear Heater Control Panel Ultrasonic Sensor (FL) Ultrasonic Sensor (RCL) Immobiliser Code ECU Ultrasonic Sensor (RCR) LIN Master ECU: Main Body ECU, Certification ECU, Clearance Warning ECU, A/C Amplifier and AFS ECU Steering Lock ECU Clearance Warning ECU Certification ECU Ultrasonic Sensor (RR) : LIN (20 kbps) : Master ECU for LIN

Lighting Intelligent AFS (Adoptive Front-lighting System) 2 kinds of intelligent AFS control Medium-to-High Speed Control: Newly added Low Speed Control: Conventional control Swivels Low-beam on side facing into turning Swivels Low-beam Individually Swivels Low-beam on side facing into turning An intelligent AFS is used in order to ensure a wide Low-beam lighting area and realize excellent visibility during turns by moving the Low-beams. Basic operation and construction are the same as the PREVIA. Same as Conventional Intelligent AFS Conventional Intelligent AFS ALPHARD [Cornering at Medium-to-High Speed] [Cornering at Low Speed]

Lighting Intelligent AFS Operation AFS ECU calculates the swivel angle of the low-beam by the steering angle and vehicle speed [Swivel Angle Range] New ALPHARD Conventional Type Low Speed Control Medium-to-High Speed Control  Headlight Unit Left Right Right Turn 0 Fixed 0-10 (to Right) 0-5 (to Right) Left Turn 0-15 (to Left) 0-7.5 (to Left) 0-15 (to Left) [Operating Conditions] Low Speed Control Medium-to-High Speed Control Vehicle Speed (moving forward) 10 km/h (6 mph) or more 30 km/h (19 mph) or more Steering Angle 6 or more 7 or more Headlight Low-beam Operating AFS Switch AFS Switch is ON Calculation of Swivel Angle of the Low-beam Low Speed Control: AFS ECU calculates the swivel angle of the low-beam according to the steering angle and drives the headlight swivel actuator on the side facing into turning Medium-to-High Speed Control: Based on the steering angle and vehicle speed, AFS ECU drives both headlight swivel actuators

Lighting Intelligent AFS System diagram (include auto leveling system) AFS OFF Switch AFS ECU Headlight Units Headlight Swivel Actuator Headlight Level Actuator LIN Height Control Sensor (Rear LH) DLC3 Initialization of Height Control Sensor Signal V Bus No. 2 Headlight Status Network Gateway ECU Main Body ECU V Bus No. 1 Shift position signal for traveling direction judgment Combination Meter Steering Angle Sensor Skid Control ECU ECM AFS OFF Indicator Light Steering Angle Vehicle Speed (front LH/RH) Engine Running Status Shift Position

Lighting Intelligent AFS Layout of main components AFS OFF Indicator Light AFS OFF Switch Steering Angle Sensor A step motor is used for the headlight swivel actuator. The AFS ECU determines the low-beam swivel angle based on the number of steps of the step motor. Main Body ECU Height Control Sensor (Rear LH) AFS ECU Headlight Swivel Actuator Skid Control ECU Headlight Level Actuator ECM

Service Point (Lighting)
Alphard - Body Electrical Service Point (Lighting) Initialization of AFS ECU Perform the initialization in the following cases: Servicing AFS OFF Indicator Light (After IG-ON) Initialization Procedure Vehicle height is changed due to the following: Replacement of suspension. Removal and reinstallation or replacement of the rear height control sensor. AFS OFF indicator light comes on for approx. 3 sec., and then goes off (bulb check function) Connect terminals 4 (CG) and 8 (LVL) of the DLC3 using SST. Turn the light control switch (ON – HEAD) at specified times* within 20 sec. after connecting the terminal. *: The number of times differs depending on present fuel level. Check the AFS OFF indicator light blinks at the number of times same as the number of times that the light control switch is operated. AFS ECU is replaced with a new one. AFS OFF indicator light continuously blinks 6 times at 2 Hz. AFS OFF Indicator Light: It alerts by warning indicator light, when the malfunction occurs in this system DTC: 2-digit DTCs are not outputted Initialization and Calibration: - Initialization operates using only the check wire Prepare Vehicle for Initialization: Unload the luggage room and vehicle, ensuring that the spare tire, tools and jack are in their original positions. Check that there are no passengers in the vehicle. Turn off the headlights. Stop the vehicle on a level surface and keep the vehicle height unchanged.

Alphard - Body Electrical Service Point (Lighting) Initialization of AFS ECU Initialization procedure Connect SST to terminal 4 (CG) and 8 (LVL) of the DLC3 using SST ( ) Turn the light control switch (ON – HEAD) at specified times* within 20 sec. after connecting the terminal. *: The number of times differs depending on present fuel level. 4 (CG) 8 (LVL) E Range Fuel Level Specified Times (OFF > HEAD > OFF) Within A range 1 Time Within B range 2 Times Within C range 3 Times Within D range 4 Times Within E range 5 Times D Range C Range B Range A Range NOTICE: Turn the light control switch at approx. 1 sec. intervals. Be sure to operate the light control switch from outside of the vehicle.

Alphard - Body Electrical Service Point (Lighting) Initialization of AFS ECU Initialization procedure Check the AFS OFF indicator light blinks at the number of times same as the number of times that the light control switch is operated. [Example] AFS ECU is replaced with a new one. Present fuel level: within B range (Specified times: 2 times) Perform Initialization 0.25 sec. 1.0 sec. ON OFF Response of New AFS ECU Response of Initialization Completion

Alphard - Body Electrical Service Point (Lighting) Replacement Light Bulb (Rear Combination Light) Remove 2 screws and disengage 2 pins and guide Turn Signal Light Stop Light Pin Guide Screws Taillight [Specifications] Light Type Watt Rear Combination Light Stop Light LED x 12 4.9 Taillight Wedge Base Bulb (Clear) 5 Turn Signal Light Wedge Base Bulb (Amber) 21 Rear Light Back-up Light 16 License Plate Light High Mount Stop Light LED x 6 2.2

Alphard - Body Electrical Service Point (Lighting) Replacement Light Bulb (Rear Combination Light) Back door trim board has a service holes License Plate Light Back-up Light : Claw Taillight [Specifications] Light Type Watt Rear Combination Light Stop Light LED x 12 4.9 Taillight Wedge Base Bulb (Clear) 5 Turn Signal Light Wedge Base Bulb (Amber) 21 Rear Light Back-up Light 16 License Plate Light High Mount Stop Light LED x 6 2.2

Alphard - Body Electrical Service Point (Lighting) Customized Body Electrical Function Intelligent tester can change the system settings Control ECU: Main Body ECU Light Control (Exterior) Intelligent Tester Display Contents Setting (Default / Available) Response Time Changes the delay timing of lighting the taillights when going into a tunnel when the light control switch is in the AUTO position. Long / Normal Sensitivity Adjusts the sensitivity of the automatic light control system. Light2 / Light1 / Normal / Dark1 / Dark2 Disp Ex OFF Sen Changes the ambient brightness level to dim the lights such as the indicator lights of the combination meter, A/C indicator light and clock. Disp Ex ON Sen

Alphard - Body Electrical Service Point (Lighting) Customized Body Electrical Function Intelligent tester can change the system settings Control ECU: Main Body ECU Light Control (Interior) Intelligent Tester Display Contents Setting (Default / Available) Lighting Time Changes the lighting time after closing all of the doors. (It will fade out immediately in case of turning the engine switch from off to on (ACC or IG).) 7.5 s / 15 s / 30 s Illumination System Lights up the footwell lights and ceiling lights when one of the following occurs: the engine switch is turned on (IG), or any door is unlocked or opened. ON / OFF Light Control Dims (ON setting) or turns off (OFF setting) the footwell lights under the following conditions: engine switch on (IG), shift lever not in P, and all doors closed.

Alphard - Body Electrical Service Point (Lighting) Customized Body Electrical Function Intelligent tester can change the system settings Control ECU: Main Body ECU Light Control (Interior) Intelligent Tester Display Contents Setting (Default / Available) I/L ON W/Door Key Unlock Lights up the personal light LH, personal light RH, center room light LH, center room light RH and engine switch illumination when doors are unlocked using a mechanical key or door control transmitter. ON / OFF I/L when ACC OFF Lights up the personal light LH, personal light RH, center room light LH, center room light RH and engine switch illumination when the engine switch is turned from on (ACC or IG) to off.

Wiper and Washer General A wiper system with a rain sensing function is newly added Controls the wiper interval and speed in accordance with the amount of rain and vehicle speed [Fluidics Splay Type Washer Nozzle] Front washer nozzles can spray windshield washer fluid over a wide area by spraying in a fun shape. The washer fluid volume has been reduced so as not to hinder the driver’s view when washer system is operated. Front Rear Wiper Washer-linked Wiper with Rain Sensing Function Intermittent and Washer-linked Wiper Washer Nozzle Fluidics Spray Type Spray Type (Conventional type)

Wiper and Washer System Diagram Rain Sensor Windshield Wiper Relay Assembly Front Wiper Motor Combination Meter Windshield Wiper Switch Assembly Front Wiper Switch Front Washer Motor Adjusting Ring Front Washer Switch Rear Wiper Motor Combination Meter: Sends the vehicle speed signal Adjusting Ring: Adjusts the rain sensor sensitivity Rear Wiper and Washer Switch Rear Washer Motor

Wiper and Washer Rain Sensing Function Rain sensor consists of 2 LEDs that emit infrared rays, 3 photo diodes that can receive those rays, a lens and sensor tape : Infrared Rays : Penetrated Infrared Rays Raindrop Detection Area If no rain drops are present in the detection area, the infrared rays emitted by the LED are all reflected from the outer surface of the windshield glass and are received by the photo diode. If rain drops are present in the detection area, a portion of the emitted infrared rays penetrate the windshield glass due to the change in the difference of the index of refraction between the glass and the are outside with windshield ) difference between air and water). The ability of the windshield glass to reflect all light back inside changes due to the presence of rain. This change of internal reflection due to presence of water reduces the amount of infrared rays that are received by the photo diode. The amount of this reduction is then used to determine the amount of rain. LED LED Photo Diodes Photo Diodes Lens [Rain Sensor]

Service Point (Wiper and Washer)
Alphard - Body Electrical Service Point (Wiper and Washer) Rain Sensor Tape The rain sensor tape can be reused, however, replace it with a new one if it is dirty or damaged Lens Rain Sensor Tape NOTICE: Do not touch the sensor tape surface or the glass surface directly with your fingers Clean up dirt on the glass with a piece of cloth, etc. After installing the rain sensor, there should be no air bubbles between the windshield glass and the rain sensor tape

Service Point (Wiper and Washer)
Alphard - Body Electrical Service Point (Wiper and Washer) Washer Nozzle (Front) Fluidics spray type washer nozzles are used If adjustment is necessary, replace a washer nozzle +2° 0° -2° Fluidics spray type washer nozzles cannot be adjusted because of their structure. Do not attempt to adjust the nozzles as it could damage them. If adjustment is necessary, replace a washer nozzle so that the spray area is within the specified. Note: Washer nozzle cannot be reused after removing. The type of rear washer nozzle is conventional type. Aim Angle -2° 0° +2° Identification Mark NOTE: Washer nozzle cannot be reused after removing

Air Conditioning General Items Contents Front Air Conditioning A/C Unit AC2 unit (Some of air is always re-circulated) Control Panel Automatic type Multi-zone (D, Fr P and Rear) automatic climate control Pollen removal mode control Neural network control Automatic recirculation control Heater SFA-II (Straight Flow Aluminum) heater radiator Condenser MF (Multi-flow)-IV sub-cool condenser Evaporator RS (Revolutionary super-slim Structure) evaporator Compressor 7SBH17 continuously variable capacity type compressor Blower K70 BMM (Semi Sirocco) Others Plasmacluster Generator Pulse detection type servo motor with bus connector Pollen Removal Type Particle Air Filter Rear Air Conditioning ACR1 unit K62 (Sirocco) Refrigerant Type: HFC-134a Charge Volume: 750 +/- 30 g

Air Conditioning Layout of Main Components A/C Pressure Sensor ECM Smog Ventilation Sensor Ambient Temp. Sensor Pollen Removal Mode switch Plasmacluster Generator 7SBH17 Compressor with Magnet Clutch Evaporator & Expansion Valve Solar Sensor Air Inlet Servo Motor Mode Control Servo Motor Heater Radiator Unit Room Temp. Sensor Blower Motor Air Mix Servo Motor (for D / Fr P) A/C Amplifier Evaporator Temp. Sensor

Air Conditioning Layout of Main Components Rear Heater Radiator Unit Mode Control Servo Motor (Rear) Rear Room Temp. Sensor Blower Motor Blower Motor Controller Air Mix Servo Motor (Rear) Rear Evaporator Temp. Sensor

Air Conditioning Plasmacluster Generator Plasmacluster generator is provided inside the air duct to improve the air quality and comfort in the cabin Controlled by the A/C amplifier and operates in conjunction with the blower motor Operation Modes Operation ION Generates negative ions to restore the balance of positive and negative ions in the cabin, thus providing good ion balance similar to natural air such as in forests or near waterfalls CLEAN Generates positive and negative ions, and emits them in the cabin to reduce the airborne germs Plasmacluster Generator + - Provides the positive and/or negative ions from the side register on the driver side only NOTE: Operation mode in ION Mode and CLEAN Mode is switched alternately at intervals of 15 min. by controlling A/C amplifier

Air Conditioning Pollen Removal Mode Control A/C mode is switched to RECIRC, FACE, Blower motor ON and compressor ON To remove the pollen in the cabin effectively and to supply filtered air Pollen Removal Mode Previous Mode ON Pollen Removal Mode Switch OFF RECIRC Air Inlet FRESH FACE Outlet Mode Foot Blower Level Hi M OFF A/C Compressor ON* OFF Start 1 2 3 Time (min.) *: The A/C compressor turns ON only when the ambient temperature is low. The A/C compressor remains ON after the micro dust and pollen filter mode has been canceled.

Service Point (Air Conditioning)
Alphard - Body Electrical Service Point (Air Conditioning) Clean Air Filter Replacement When replacing the air filter, remove glove compartment door Stopper Glove Compartment Door Stopper Disengage the claw and release the glove compartment door stopper. Slightly bend stoppers to the inside and pull the glove compartment door assembly until the stoppers are released. Open the glove compartment door assembly to approx. 55 degrees from its closed position. Pull it horizontally toward the rear of the vehicle to disengage the 2 claws hinges and remove the glove compartment door assembly. NOTICE: Pulling the glove compartment door assembly upward to remove it causes the hinges to deform. Be sure to pull out the glove compartment door assembly horizontally. : Claw [Maintenance Interval] Normal Condition Inspect Every 30,000 km (replace if necessary) Severe Condition Half interval of normal driving condition

Alphard - Body Electrical Service Point (Air Conditioning) Customized Body Electrical Function Intelligent tester can change the system settings Control ECU: A/C Amplifier Intelligent Tester Display Contents Setting (Default / Available) Set Temperature Shift Function to control with the shifted temperature against the displayed temperature +2 C / +1 C / NORMAL / -1 C / -2 C Ambient Temperature Shift Function to control the shifted ambient temperature in relation to the displayed ambient temperature +3 / +2 C / +1 C / NORMAL / -1 C / -2 C / -3 Emission Gas Sensor Shift Function to change the sensitivity of the exhaust gas sensor MU MORE / MORE / LI MORE / NORMAL / LI LESS / LESS / MU LESS Air Inlet Mode Function to shift from INLET mode to RECIRCULATION mode when the A/C is turned on MANUAL or AUTO Compressor Mode Function to automatically turn the A/C on by pressing the AUTO button when blower is on and the A/C is off

Alphard - Body Electrical Service Point (Air Conditioning) Customized Body Electrical Function Intelligent tester can change the system settings Control ECU: A/C Amplifier Intelligent Tester Display Contents Setting (Default / Available) Compressor/Air Inlet DEF operation Function to automatically turn the A/C on linked with the FRONT DEF button when the A/C is off NORMAL or LINK Evaporator Control Function to set the evaporator control to the AUTOMATIC position (AUTO) to save power, or to the coldest position (MANUAL) to dehumidify air and to prevent the windows from fogging up MANUAL or AUTO Foot / DEF Auto Mode Function to automatically turn the airflow from FOOT/DEF on when AUTO mode is on ON / OFF Foot / DEF Automatic Blow Up Function Function to automatically increase the blower level when the defroster is on Purifier Auto Cancel ON/OFF of the Plasmacluster generator function.

Parking Assist / Monitoring
Alphard - Body Electrical Parking Assist / Monitoring TOYOTA Parking Assist-sensor System Major difference from previous model Items New ALPHARD Previous Model Ultrasonic Sensor  Corner x 4 Back x 2 ECU - Sensor LIN Communication Connected Direct Line Detection Level Corner: 3-stage Back: 4-stage Back: 3-stage Clearance Sonar Buzzer Quantity 1 (for corner and back) 2 (for corner / for back) Volume Adjust by using Customized Body Electrical Function Volume Switches on ECU Display / Indicator Multi-information Display Combination Meter —

Alphard - Body Electrical Parking Assist / Monitoring TOYOTA Parking Assist-sensor System System diagram LIN Ultrasonic Sensor (FL) Clearance Warning ECU Clearance Sonar Main Switch Ultrasonic Sensor (FR) Clearance Sonar Buzzer LIN Ultrasonic Sensor (RR) Ultrasonic Sensor (RCR) MS Bus Main Body ECU Ultrasonic Sensor (RCL) LIN communication is used to connect clearance warning ECU and ultrasonic sensors [Operating Conditions]: Same as previous model Clearance Sonar Main Switch: ON Shift Position: Except P range - R range (All sensors activation) - Except R range (Only front corner sensors activation) [Only when the shift position is except P or R range] Vehicle speed is less than 10 km/h V Bus No. 1 Ultrasonic Sensor (RL) Combination Meter ECM Neutral Start Switch Vehicle Speed Signal Shift Position Signal

Alphard - Body Electrical Parking Assist / Monitoring TOYOTA Parking Assist-sensor System Clearance warning buzzer When only 1 sonic sensor detect obstacle ON / OFF Time (msec.) Detection Area Detection Distance (cm) Buzzer Sound Pattern Corner (FL / FR / RL / RR) Long Approx. 50 to 37.5 150 / 150 Middle Approx to 25 75 / 75 Short Approx. 25 or less Continuous Sound Rear Center (RCL / RCR) Longest Approx. 150 to 60 150 / 650 Approx. 60 to 45 Approx. 45 to 35 Approx. 35 or less 2 or more sonic sensors detect obstacles at the same time ON / OFF Time (msec.) Detection Area Front Corner Short Middle Long Non Detection Pattern B Pattern A Continuous 75 / 75 150 / 150 Longest 150 / 650 No Beep Depending on the detection distance and the detection area, the sound pattern of the clearance warning buzzer will vary. Rear Corner or Rear Center

Alphard - Body Electrical Parking Assist / Monitoring TOYOTA Parking Assist-sensor System Clearance warning buzzer Pattern A Pattern B ON OFF 50 850 250 (msec.) OFF: 7 Times OFF: 3 Times 2 or more sonic sensors detect obstacles at the same time ON / OFF Time (msec.) Detection Area Front Corner Short Middle Long Non Detection Pattern B Pattern A Continuous 75 / 75 150 / 150 Longest 150 / 650 No Beep Rear Corner or Rear Center

Alphard - Body Electrical Parking Assist / Monitoring TOYOTA Parking Assist-sensor System Multi-information display Items displayed by multi-information display are the location of the obstacle, and distance to obstacle Front and Rear Corner Long Front Corner LH Front Corner RH Middle Short (Flash) Rear Corner LH [Distance] Rear Center Rear Corner RH Rear Center Short (Flash) Middle Long Longest [Distance]

Service Point (Parking Assist / Monitoring)
Alphard - Body Electrical Service Point (Parking Assist / Monitoring) TOYOTA Parking Assist-sensor System Diagnosis Malfunction display Displays and sounds buzzer when any of ultrasonic sensors are malfunctioning or freezing [Sensor Malfunction Indication] (Example: Front Left Sensor) [Frozen Indication] (Example: Front Left Sensor) [Clearance Warning Buzzer] (Malfunction / Frozen) (msec.) 1 cycle 250 5 cycles

Alphard - Body Electrical Service Point (Parking Assist / Monitoring) TOYOTA Parking Assist-sensor System Service information Items Notes DTC  (11 DTCs) Can be checked 5-digit DTCs only on Intelligent Tester C1AE1 Front Left Sensor Malfunction C1AED Rear Sensor Communication Malfunction Data List  (27 Data Lists) Main Switch Clearance sonar main switch / OFF or ON Fr Left Sensor Front left sensor information / Undetect, Close R, Mid Y, Mid LY, Freeze, Open or Blink Keep Sense Buzzer Keep sense buzzer operation / Not Avail or Avail Active Test (1 Active Test) Buzzer Clearance warning buzzer / Operate or Stop

Alphard - Body Electrical Service Point (Parking Assist / Monitoring) Customized Body Electrical Function Intelligent tester can change the system settings Control ECU: Clearance warning ECU Intelligent Tester Display Contents Setting (Default / Available) Rr Sensor Onset Range Set the buzzer activation range for the rear center sensors. Narrow (600 mm) / Wide (1500 mm) Keep Sense Buzzer Make the buzzer sound when the distance between the vehicle and obstacle does not change for more than 3 seconds. Not Avail / Avail Fr & Rr Buzzer Volume Change the buzzer volume setting. L / M1 / M2 / M3 / H Sensor Condition N Make the front sensors available when the shift lever is in N. Reverse Range Front Sensor Change the operation setting for the front sensors when the shift lever is in R. F / F Stop Non P/R Range Rear Sensor Change the operation setting for the rear sensors when the shift lever is in any position except P or R. R / Rcrn / R Stop

Power Window System General One-touch auto up-and-down with jam protection function (all doors) Key-off operation Linked operation Key-linked up-and-down / Transmitter-linked up-and-down / Lock switch-linked up Window position is memorized in EEPROM (Power Window ECU) Initialization method is changed LIN communication is used DTC, data list, active test are available Major Difference

Power Window System System Diagram Front Door Outside Handle Assembly LH Certification ECU Door Control Receiver Assembly Entry Lock Switch Front Door Outside Handle Assembly RH Power Window Regulator Motor Assembly (LH / RL / RR) Entry Lock Switch Power Window Regulator Motor Assembly RH MS Bus Front Door Courtesy Light Switch Assembly (for Driver Side) Main Body ECU Power Window ECU Power Window Motor Hall IC Front Door Lock Assembly (for Driver Side) Door Key Lock and Unlock Switch Multiplex Network Master Switch Assembly LIN

Service Point (Power Window System)
Alphard - Body Electrical Service Point (Power Window System) Initialization When the power window regulator motor assembly is reinstalled or replaced, the power window control system must be initialized When replacing the power window regulator motor assembly with a new one Fully open the window by fully pushing down the power window switch*, and hold the switch for 1 sec. or more after the window is fully opened. Fully close the power window by fully pulling up the power window switch*, and hold the switch for 1 sec. or more after the window is fully closed to reset the glass position When removing / installing the power window regulator motor assembly When the window does not fully open Fully close the power window by fully pulling up the power window switch*, and hold the switch for 6 sec. or more after the window is fully closed (if the power window does not move or stops halfway even when the switch is fully pulled, release the switch and fully pull it again). Fully open the window by pushing down the power window switch, and hold the switch for 1 sec. or more after the window is fully opened. Release the power window switch. Then fully push down and hold the switch for 4 sec. or more. Fully close the power window by fully pulling up the power window switch *: Network master switch assembly or power window regulator switch assembly NOTE: When the battery terminal is reconnected, it is not necessary to initialize the power window regulator motor assembly

Alphard - Body Electrical Service Point (Power Window System) Service Information Items Notes DTC  (3 DTCs) Can be checked 5-digit DTCs only on Intelligent Tester B2311 Power Window Motor Malfunction B2312 Power Window Switch Malfunction B2313 Glass Position Initialization Incomplete Data List  (49 Data Lists) Master Switch D Door P/W Auto SW Driver side power window auto switch signal / ON or OFF Each Door Motor (D-door / P-door / RL-door / RR-door) Gear Position (Close – ¼) Margin for jam protection triggering force of window glass within range of fully closed to ¼ open window glass position / OK or CAUTION Main Body D Door Courtesy SW Driver side door courtesy switch signal / ON or OFF Active Test (8 Active Test) Power Window Power Window / Up or OFF Power Window / Down or OFF

Alphard - Body Electrical Service Point (Power Window System) Customized Body Electrical Function Intelligent tester can change the system settings Control ECU: Power window ECU Intelligent Tester Display Contents Setting (Default / Available) Door Key Linked P/W Up Function that raises all power windows when, with engine switch off, key in driver door key cylinder is turned to and held in lock position for more than 1.5 seconds ON / OFF Door Key Linked P/W Down Function that lowers all power windows when, with engine switch off, key in driver door key cylinder is turned to and held in unlock position for more than 1.5 seconds P/W Up w/ Transmitter Function that raises all power windows when, with engine switch off, lock switch on transmitter is pressed and held for more than 3.0 seconds P/W Down w/ Transmitter Function that lowers all power windows when, with engine switch off, unlock switch on transmitter is pressed and held for more than 3.0 seconds P/W Up w/Smart Function that raises all power windows when, with engine switch off, entry lock switch on driver side door outer handle is pressed and held for more than 3.0 seconds

Power Slide Door System
Alphard - Body Electrical Power Slide Door System General Major difference from previous model Power slide door ECU is built into the power slide door motor CAN communication is used DTC, data list, active test are available Major Difference Basic operation is the same as the previous model - Opens/closes the slide door automatically by operating the power slide door switch (on overhead module), slide door handle or transmitter - with jam protection function Operating Conditions (same as the previous model) - PWR DOOR OFF switch is in ON condition - Slide door is unlocked - Shift position is “P” range - Fuel lid open detection switch is ON (Fuel lid is closed) - Vehicle speed is less than 3 km/h (1.8 mph) Difference items - Each power slide door motor with built-in each power slide door ECU - Some vehicle information is received from CAN protocol (shift position, signal, vehicle speed signal, transmitter signal, etc…)

Alphard - Body Electrical Power Slide Door System System Diagram Slide Door Motor Unit LH Power Slide Door Lock Assembly LH Slide Door Lock Release Motor LH Power Slide Door ECU (LH) Power Slide Door Motor Hall ICs Power Slide Door Clutch Power Slide Door Buzzer Full Lock Motor Full Latch Switch Half Latch Switch Pawl Switch Neutral Position Switch Touch Sensor LH Fuel Lid Open Detection Switch* *: Only LH side Power Door OFF Switch Slide Door Lock Remote Control Assembly LH Inside/Outside Handle Switches Power Slide Door ECU (RH) MS Bus Power Slide Door Switch Door Control Receiver Certification ECU Main Body ECU Engine Switch Park/Neutral Position Switch ECM Combination Meter V Bus No.1

Alphard - Body Electrical Power Slide Door System Slide Door Remote Control Assembly LH* Slide Door Lock Release Motor Assembly LH* Layout of Main Components ECM Power Slide Door Switches Door Control Receiver Touch Sensor LH* Slide Door Front Lock Assembly LH* Park/Neutral Position Switch Slide Door Full Open Stop Lock Assembly LH* Engine Switch Main Body ECU Power Supply Equipment Unit LH* Slide Door Lock Assembly LH* Slide Door Motor Unit LH* Power Slide Door ECU Fuel Lid Detection Switch Key POWER SLIDE DOOR Button Combination Meter Power Door OFF Switch *: Same Layout is available for the RH side

Alphard - Body Electrical Power Slide Door System Slide Door Motor Unit Slide door motor unit consists of mainly power slide door motor, main pulley, belt and arm bracket Power slide door ECU is built into power slide motor [Power Slide Door Motor] Magnet Clutch Hall IC Magnet Power Slide Door Motor (Power Slide Door ECU) Motor Belt Belt Main Pulley Arm Bracket [Slide Door Motor Unit]

Service Point (Power Slide Door System)
Alphard - Body Electrical Service Point (Power Slide Door System) Service Information Items Notes DTC  (2 DTCs) Can be checked 5-digit DTCs only on Intelligent Tester B2223 Power Slide Door Pulse Sensor Malfunction on Rear Right Door B2224 Power Slide Door Pulse Sensor Malfunction on Rear Left Door Data List*  (13 Data Lists) PSD Touch Sensor Power slide door touch sensor signal / OFF, ON or Open Handle Switch1 Handle operation detect switch signal / ON or OFF Active Test* (5 Active Tests) PSD Motor Power slide door motor / Forward or OFF PSD Buzzer Power slide door warning buzzer / ON or OFF Initialization and Calibration After reconnecting the battery terminal [Initialization] Fully close the slide doors manually NOTE: Initialization is unnecessary, if slide doors are closed when the battery terminal reconnects *: Power slide door ECU (LH / RH) has these functions separately.

Service Point (Power Slide Door System)
Alphard - Body Electrical Service Point (Power Slide Door System) Customized Body Electrical Function Intelligent tester can change the system settings Control ECU: Each power slide door ECU Intelligent Tester Display Contents Setting (Default / Available) PSD SW Operation Function to operate power slide door switch 0.8 s / ON PSD Buzzer Function to sound buzzer when power slide door is in operation ON / OFF Wireless PSD Operation Function to operate wireless power slide door switch 1 TIME / 2 TIMES / 0.8 s / OFF

Power Back Door System General Major difference from previous model Power back door ECU is built into the power back door motor CAN communication is used DTC, data list, active test are available Major Difference Basic operation is the same as the previous model - Opens/closes the back door automatically by operating the power back door switch (on overhead module) or transmitter - with jam protection function Operating Conditions (same as the previous model) - PWR DOOR OFF switch is in ON condition - Back door is unlocked - Shift position is “P” range - Vehicle speed is less than 3 km/h (1.8 mph) Difference items - Back door motor unit with built-in power back door ECU - Some vehicle information is received from CAN protocol (shift position, signal, vehicle speed signal, transmitter signal, etc…)

Power Back Door System System Diagram Back Door Motor Unit Back Door Lock Assembly PWR DOOR OFF SW Power Back Door ECU Opener & Closer Motor Touch Sensor LH Power Back Door Motor Half Latch Switch Touch Sensor RH Neutral Position Switch Power Back Door Buzzer Hall ICs Back Door Courtesy Switch Magnetic Clutch Door Control Receiver Neutral Position Switch MS Bus Certification ECU Engine Switch Main Body ECU ECM Back Door Open Switch V Bus No.1 Power Back Door Opener/Closer Switch Combination Meter Hazard Light Flasher Relay

Power Back Door System Back Door Motor Unit Power Back Door ECU Layout of Main Components Door Control Receiver ECM Power Back Door Close Switch Back Door Handle Back Door Opener Switch Back Door Lock Assembly Back Door Opener Motor Power Back Door Buzzer Park/Neutral Position Switch Power Back Door Closer Switch Engine Switch Main Body ECU Back door motor unit consists of mainly power back door motor, gears, shaft and arm. Power back door ECU is built into power back motor. Key Combination Meter POWER BACK DOOR Button Touch Sensors

Service Point (Power Back Door System)
Alphard - Body Electrical Service Point (Power Back Door System) Service Information Items Notes DTC  (2 DTCs) Can be checked 5-digit DTCs only on Intelligent Tester B2222 PBD Pulse Sensor Malfunction B2225 Back Door Motor Clutch Malfunction Data List  (20 Data Lists) Power Back Door ECU (17 Data Lists) Door Lock Status Back door lock condition signal / LOCK or UNLOCK Door Position (Close – ¼) Back door position (Full close – ¼) / CAUTION or OK Main Body ECU (3 Data Lists) Back Door Open Back door Lock / Permit or Prohibit Active Test (5 Active Tests) Latch Release Latch release operation / ON or OFF PBD Motor Power back door motor / Forward, Reverse or OFF Initialization and Calibration After reconnecting the battery terminal [Initialization] Fully close the back door manually NOTE: Initialization is unnecessary, if back door is closed when the battery terminal reconnects

Service Point (Power Back Door System)
Alphard - Body Electrical Service Point (Power Back Door System) Customized Body Electrical Function Intelligent tester can change the system settings Control ECU: Power back door ECU Intelligent Tester Display Contents Setting (Default / Available) PBD SW Operation Function that turns power back door closer switch on when switch is pushed once or held down for 0.8 sec. 0.8 s / ON PBD Buzzer This function makes the power back door buzzer sound when power back door is operating ON / OFF Wireless PBD Operation Function that operates power back door when transmitter switch is pressed in specified way 1 Motion / 1 Oper / 2 Oper / 0.8 s / OFF

Entry & Start System General Door lock/unlock, engine start, back door opening/locking possible with just carrying the key [Door Lock / Unlock] [Engine Start] Unlock Lock Key [Back Door Open / Lock] Basic operation and construction are the same as the RAV4 and PREVIA Open Lock

Entry & Start System Key Five function buttons, mechanical key and transponder chip are included in the key Lock Button POWER SLIDE DOOR Button Unlock Button POWER BACK DOOR Button (only for 350G grade) Mechanical Key Mechanical Key

Entry & Start System Layout of Main Components Wireless Door Lock Buzzer Combination Meter Engine Switch ECM Door Outside Handle Door Control Receiver Main Body ECU [Door Outside Handle] Lock Switch Touch Sensor Antenna Door Electrical Key Oscillator Indoor Electrical Key Oscillator (Front / Center / Rear) Door Electrical Key Oscillator (Outside Back Door) Back Door Handle Open Switch Lock Switch NOTE: Refer to the Service Bulletin for the installation position of the Certification ECU and Immobiliser Code ECU

Entry & Start System System Diagram Engine Switch Transponder Key Amplifier M Main Body ECU Door Lock / Unlock Motors Stop Light Switch ACC Relay Neutral Start Switch IG1 Relay Courtesy Switches IG2 Relay ST CUT Relay ST Relay Immobiliser Code ECU ECM MS Bus Back Door Open Switch Back Door Lock Switch V Bus No.1 Certification ECU LIN Meter ECU Steering Lock ECU Outside Door Handle (D and Fr P) Door Electrical Key Oscillator Antenna Basic operation and construction are the same as the RAV4 and PREVIA Wireless Door Lock Buzzer Touch Sensor Lock Switch Electrical Key Antenna Electrical Key Oscillators Key Door Control Receiver (Indoor [Front/Center/Rear] Outside [Back Door)

Entry & Start System Actuation Area Entry and start system only work when the key is in the actuation area formed by the 6 oscillators Key Door Electrical Key Oscillator Door Electrical Key Oscillator (Back Door) Actuation Area of Entry Function Actuation Area of Start Function Actuation Area of Start Function Indoor Electrical Key Oscillator : Actuation Area (approx. 0.7 –1.0 m)

Entry & Start System Engine Start Function Start / stop engine switch control Power Source Mode P Range N Range Other Range Push engine switch Pass over one hour No depressed pedal* with pedal* depressed OFF ACC IG-ON Engine Start : It can operate only when vehicle is stopped *: Brake pedal

Entry & Start System Engine Start Function Case of emergency Case of Emergency Method To stop the engine Power source mode can be changed to ACC while driving Pushing the engine switch for 3 sec. or more To start the engine Can enable the engine to start without depressing the brake pedal and/or the shift position in P/N range Push the engine switch to turn the power source mode to ACC Push and hold the engine switch for 15 sec. or more NOTE: Above two operations must be applied only in emergency situations. Under normal conditions, the engine must not be stopped by pressing the engine switch during driving or started without depressing the brake pedal when the shift lever is in any position other than P or N

Entry & Start System Engine Switch Indicator light indicates the present power source mode and system malfunction Power Source Mode IG-OFF ACC or IG-ON Engine Running Condition for engine start* X  — Indicator Light Condition OFF Green Amber Power Source Mode When electrical steering lock is not unlocked Malfunction in Entry & Start System Indicator Light Condition Green: Blinks for 15 sec. (1 Hz) Amber: Blinks for 15 sec. (0.5 Hz) The engine switch indicator blinks an amber color, when the DTC B2271, B2272, B2273 or B2781 is detected B2271: Ignition hold monitor malfunction B2272: Ignition1 outside-monitor malfunction B2273: Ignition2 outside-monitor malfunction B2781: Steering lock ECU internal malfunction The engine switch indicator blinks a green color, when the electrical steering lock is not unlocked [Electrical steering lock does not lock] When the electrical steering lock does not lock, and the driver’s door is opened, the key reminder system operates. The engine switch indicator does not blink even when the electrical steering lock does not lock. *: Depress brake pedal

Entry & Start System Entry & Start System Cancel Function This function can cancel following functions; Door lock/unlock function, back door opening function, prevention of key confinement and warning function Cancellation Procedure 1 Unlock once with UNLOCK button* 2 Open driver’s door 3 Unlock twice with UNLOCK button* 4 Alternately close and open of driver’s door twice 5 6 Alternately close and open of driver’s door once 7 Close the driver’s door Interval within 5 sec. within 30 sec. [System Cancel Function] Entry & Start System cancel switch is not equipped Entry & Start System Cancel Procedure: Unlock once with the UNLOCK button of the key Open the driver’s door within 5 seconds Unlock twice with the UNLOCK button of the key within 5 seconds Alternately close and open of the driver’s door twice within 30 seconds Unlock twice with the UNLOCK button of the key within 30 seconds Alternately open and close of the driver’s door 1 times within 30 seconds, and open again Close the driver’s door within 5 seconds NOTE: When Entry & Start System is deactivated, the wireless door lock buzzer sounds once. To return to the Entry & Start System activation condition, perform the procedures again. When Entry & Start System is activated, the wireless door lock buzzer sounds twice. Prerequisite: IG-OFF, driver’s door is closed and unlocked *: Operates the Key button

Service Point (Entry & Start System)
Alphard - Body Electrical Service Point (Entry & Start System) Part Replacement and ID Code Registration In case of lost keys Number of Keys Condition before registration  At least one key is available 1. Using remaining key, erase lost key code [Key Code Erasure] 2. Register additional keys as necessary [Key Code Registration] (Additional key ID registration) All keys are lost 1. Replace Immobiliser Code ECU and Certification ECU* 2. Register all keys [Key Code Registration] (New key ID registration) 3. Register Immobiliser Code ECU – ECM communication ID [ECU – ECM Communication ID Registration] A maximum of 7 key codes can be registered A key gets a certification ECU code registered. This code in the key can not be erased, only overwritten by NEW certification ECU. NOTE: After execute [Key Code Registration] (New key ID Registration) only new key can be registered [Key Code Registration (Additional key ID registration) and previous keys are no longer registered even if customer found. *: Need replacement, even if Certification ECU and Immobiliser Code ECU are normal condition

Alphard - Body Electrical Service Point (Entry & Start System) Part Replacement and ID Code Registration Explanation of S Code S code is generated by all the registered key IDs and it is registered to Certification ECU and Immobiliser Code ECU Immobiliser Code ECU Certification ECU S Code Same S code S Code Key ID1 Key ID1 Key ID1 Key ID2 Key ID2 Key ID2 Key ID3 Key ID3 Key ID3 S code Certification ECU and Immobiliser Code ECU have the same S code S code is generated by all the registered key IDs The different S code from Immobiliser Code ECU cannot be registered to Certification ECU Immobiliser Code ECU Certification ECU S Code Not same S code S’ Code Key ID1 Key ID1 Key ID1 Cannot register Key ID2 Key ID2 Key ID2 Key ID3 Key ID3 (Lost)

Alphard - Body Electrical Service Point (Entry & Start System) Part Replacement and ID Code Registration In case of replacing Keys It is necessary to register a new S code to Certification ECU and Immobiliser Code ECU by remaining keys Immobiliser Code ECU Certification ECU S’ Code Same S’ code S’ Code Key ID1 Key ID1 Key ID1 Key ID2 Key ID2 Key ID2 Key ID3 Erase Key ID2, 3 codes Key ID3 Key ID3 (Malfunction) Replacing keys (needs one or more registered keys) (ex. Key ID3 does not work) Using remaining key (Key ID1), erase other key codes (Key ID2 and 3) Register additional keys as necessary (Key ID2 and 4) New S” code is generated by the registered key IDs and it is registered to Certification ECU and Immobiliser Code ECU Immobiliser Code ECU Certification ECU Key ID1 S” Code Same S” code S” Code Key ID1 Key ID1 Key ID2 Key ID2 Key ID2 Add Key ID2, 4 codes Key ID4 (New) Key ID4 Key ID4

Alphard - Body Electrical Service Point (Entry & Start System) Part Replacement and ID Code Registration In case of lost all keys It is necessary to change the both ECU, because current S code cannot be re-registered Immobiliser Code ECU Certification ECU S code cannot be re-registered S Code S Code Key ID1 (lost) Key ID1 Key ID1 Key ID2 (lost) Key ID2 Key ID2 Key ID3 Key ID3 Key ID3 (lost) New ECU Replace the both ECU New ECU Lost all key Replace Immobiliser Code ECU and Certification ECU It is necessary to change the both ECU, because current S code cannot be re-registered “Key Code Registration” / “Key Code Erasure” operation needs one or more registered keys Register new keys Register Immobiliser Code ECU – ECM communication ID Immobiliser Code ECU Certification ECU Key ID4 (New) S’’’ Code Same S’’’ code S’’’ Code Key ID4 Key ID4 Key ID5 (New) Key ID5 Key ID5 Register new keys Key ID6 (New) Key ID6 Key ID6

Alphard - Body Electrical Service Point (Entry & Start System) Part Replacement and ID Code Registration Explanation of Vehicle Code in the key Vehicle Code is registered into the key in order to check whether a key is registered or not with other certification ECU Current ECU Current ECU Certification ECU New Key Certification ECU Key ID2 Key ID4 Key ID1 Key ID2 Key ID3 Key ID4  X X Key ID2 Key ID4 Vehicle Code Vehicle Code X Y X Y New ECU Impossible to register already used keys in a used certification ECU Certification ECU Key ID5 Only new Certification ECU without key IDs can overwrite the Vehicle code in the key Key ID5 Key ID5 X  Z Z Vehicle Code Z

Alphard - Body Electrical Service Point (Entry & Start System) Part Replacement and ID Code Registration In case of replacing Certification ECU Number of Keys Condition before registration Key ID codes can be registered / erased Key ID codes cannot be either registered / erased All keys are assembled 1. Replace certification ECU 2. Register all keys [Key Code Registration] (New key ID registration) Some keys are lost 1. Erase key codes [Key Code Erasure] 2. Register remaining keys [Key Code Registration] (Additional key ID registration) 3. Replace certification ECU 4. Register all keys [Key Code Registration] (New key ID registration) 1. Replace certification ECU and Immobiliser Code ECU* 2. Register all keys [Key Code Registration] (New key ID registration) 3. Register Immobiliser Code ECU – ECM communication ID [ECU – ECM Communication ID Registration] NOTE: If some keys are not registered during registering other keys, they cannot be registered later *: Need replacement, even if Immobiliser Code ECU is normal condition

Alphard - Body Electrical Service Point (Entry & Start System) Part Replacement and ID Code Registration In case of replacing Certification ECU (some keys are lost) It is necessary to register a new S” code to Certification ECU and Immobiliser Code ECU by remaining keys Current ECU Immobiliser Code ECU Certification ECU S’ Code Same S’ code S’ Code Key ID1 Key ID1 Key ID1 Key ID2 Key ID2 Key ID2 Key ID3 Erase Key ID2, 3 codes Key ID3 Key ID3 (Lost) Current ECU Replacing Certification ECU (some keys are lost, key ID codes can be erased) (ex. Lost Key of ID3) Erase key codes (Key ID2 and 3) Register remaining keys (Key ID2) Certification ECU and Immobiliser Code ECU have a new S” code Replace certification ECU Register all keys (Key ID1 and 2) Immobiliser Code ECU Certification ECU S” Code Same S” code S” Code Key ID1 Key ID1 Key ID1 Add Key ID2 code Key ID2 Key ID2 Key ID2 Replace the Certification ECU after this procedure

Alphard - Body Electrical Service Point (Entry & Start System) Part Replacement and ID Code Registration In case of replacing Certification ECU (some keys are lost) Replace the Certification ECU and Immobiliser Code ECU, if the registration function does not work Registration function does not work Current ECU Immobiliser Code ECU Certification ECU S Code S Code Key ID1 S code cannot be re-registered Key ID1 Key ID1 Key ID2 Key ID2 Key ID2 Key ID3 Key ID3 Key ID3 (Lost) New ECU Replace the both ECU New ECU Replacing Certification ECU (some keys are lost, key ID codes cannot be erased) (ex. Lost Key of ID3) Replace certification ECU and Immobiliser Code ECU Register all keys (Key ID1 and 2) Register Immobiliser Code ECU – ECM communication ID Immobiliser Code ECU Certification ECU S’ Code S’ Code Key ID1 Key ID1 Key ID1 Key ID2 Key ID2 Key ID2

Alphard - Body Electrical Service Point (Entry & Start System) Part Replacement and ID Code Registration In case of replacing Immobiliser Code ECU Number of Keys Condition before registration  At least one key is available 1. Replace Immobiliser Code ECU 2. Register recognition codes in ECUs [Key code registration] 3. Register Immobiliser Code ECU – ECM communication ID [ECU – ECM Communication ID Registration]

Alphard - Body Electrical Service Point (Entry & Start System) Part Replacement and ID Code Registration In case of replacing Steering Lock Actuator Number of Keys Condition before registration  At least one key is available 1. Replace Steering Lock Actuator 2. Register recognition codes in ECUs [ECU Communication ID Registration] NOTE: In the following conditions the engine may not start the first time (due to the Steering Lock ECU not correctly detecting the steering lock bar position) [New steering lock ECU has not memorized the steering lock bar position] After replacing the Steering Lock Actuator After recharging a depleted battery If a malfunction occurred in the steering lock ECU or lock/unlock position switch, the entire steering lock assembly must be replaced Open and close the driver’s door after replacing the steering lock actuator or recharging the depleted the battery to recognize the position of the steering lock bar Open and close the driver’s door to start the engine

Alphard - Body Electrical Service Point (Entry & Start System) Part Replacement and ID Code Registration In case of replacing ECM Number of Keys Condition before registration  At least one key is available 1. Replace ECM 2. Register Immobiliser Code ECU – ECM communication ID [ECU – ECM Communication ID Registration] NOTE: DO NOT switch power source mode ON/OFF more than 20 times before complete “ECU – ECM Communication ID Registration” otherwise replace the ECM

Alphard - Body Electrical Service Point (Entry & Start System) Part Replacement and ID Code Registration Explanation of S Code, G Code and L Code ECU Communication ID Registration (Automatically*) Immobiliser Code ECU only is replaced ECU Communication ID Registration (Automatically) ECM only is replaced Immobiliser Code ECU Certification ECU Key ECM Key ID# “S” Code “S” Code “G” Code “G” Code Key ID1 “L” Code Key ID2 ECU Communication ID Registration Immobiliser Code ECU only is replaced ECU Communication ID Registration (Automatically) Certification ECU and Immobiliser Code ECU are replaced ECU Communication ID Registration Steering Lock ECU or Immobiliser Code ECU only is replaced In the repair manual procedure, ECU Communication ID Registration for G Code is always required manually when the ECM and/or immobiliser code ECU is replaced, but in actuality this registration is operated automatically when the ECM only is replaced. Steering Lock ECU “L” Code Key Code Registration New Key ID Additional Key ID Key ID erasure : Automatically : Manually (Tester) : Manually (SST) *: “S Code” is transmitted at the time “ECU Communication ID Registration” is operated

Alphard - Body Electrical Service Point (Entry & Start System) Part Replacement and ID Code Registration “ECU – ECM Communication ID Registration” Using SST, connect terminals Tc and CG of the DLC3 Turn the power switch ON (DO NOT start the engine) and leave it as is for 30 minutes. Turn the power switch OFF and disconnect terminals Tc and CG. Check that the engine starts CG Tc

Alphard - Body Electrical Service Point (Entry & Start System) Part Replacement and ID Code Registration Note for ID code registration Do not turn ON (IG-ON) the Power Source Mode 10 times or more, after replacing certification ECU. Otherwise, Power Mode becomes impossible to switch to ON.

Alphard - Body Electrical Service Point (Entry & Start System) ID Code Registration Using intelligent tester Key Code Registration (New key ID registration) All keys available (one or more registered key in Immobiliser Code ECU) [System Selection Screen] Body > Entry & Start > Utility > Key Code Registration No registered key in Immobiliser Code ECU

Alphard - Body Electrical Service Point (Entry & Start System) ID Code Registration Using intelligent tester Key Code Registration (New key ID registration) To register another key code

Alphard - Body Electrical Service Point (Entry & Start System) ID Code Registration Using intelligent tester Key Code Registration (New key ID registration) [5] [2]

Alphard - Body Electrical Service Point (Entry & Start System) ID Code Registration Using intelligent tester Key Code Registration (Additional key ID registration) [5] [2] [System Selection Screen] Body > Entry&Start > Utility > Key Code Registration HINT: Registration mode is automatically selected by intelligent tester, new key ID registration mode or additional key ID registration mode

Alphard - Body Electrical Service Point (Entry & Start System) ID Code Registration Using intelligent tester Key Code Registration (Additional key ID registration) To register another key code

Alphard - Body Electrical Service Point (Entry & Start System) ID Code Registration Using intelligent tester Key Code Registration (Additional key ID registration) [4] [3]

Alphard - Body Electrical Service Point (Entry & Start System) ID Code Registration Using intelligent tester Key Code Erasure (Erase all registered key except one) [3] [System Selection Screen] Body > Entry&Start > Utility > Key Code Erasure

Alphard - Body Electrical Service Point (Entry & Start System) ID Code Registration Using intelligent tester Key Code Erasure (Erase all registered key except one)

Alphard - Body Electrical Service Point (Entry & Start System) ID Code Registration Using intelligent tester ECU Communication ID Registration [System Selection Screen] Body > Entry&Start > Utility > ECU Communication ID Registration

Alphard - Body Electrical Service Point (Entry & Start System) Customized Body Electrical Function Intelligent tester can change the system settings Control ECU: Certification ECU Intelligent Tester Display Contents Setting (Default / Available) Ignition Available Area Function that switches the entry ignition detection area FRONT / ALL Park Wait Time Function to set waiting time to permit opening door after door is locked with entry lock function 0.5 s / 1.5 s / 2.5 s / 5 s Back Door Opening Operation Function to open the back door when the driver has the electrical key and presses back door opener switch assembly (opener switch) LONG / TWICE / OFF Key Low Battery Warning Function to warn driver that key battery is low ON / OFF Ignition Available Area (Entry ignition available area) Function to choose the available area for electrical key to start the engine and cancel the steering lock

SRS Airbag System General Major difference from previous model Items New ALPHARD Previous Model Front Airbag Driver  Single Fr Passenger Dual-stage Side Airbag Front seats Knee Airbag  Curtain Shield Covers 3rd row seat (2 inflators) Covers 2nd row seat (1 inflator) Airbag Sensor Airbag sensor assembly Front airbag sensor Side airbag sensor Rear airbag sensor Side door airbag sensor Front floor airbag sensor Rear floor airbag sensor Rear airbag sensor (Curtain shield airbag sensor)

SRS Airbag System System Diagram Seat Belt Pretensioner Side Airbag Sensor Side Airbag Front Floor Airbag Sensor Driver Knee Airbag Rear Airbag Sensor Driver Airbag (Single) Slide Door Airbag Sensor Airbag Sensor Assembly Front Airbag sensors Curtain Shield Airbags Front Passenger Airbag (Dual-stage) Rear Airbag Sensor Side Airbag Rear Floor Airbag Sensor Seat Belt Pretensioner Slide Door Airbag Sensor : Collision Signal : Deployment Signal Side Airbag Sensor

SRS Airbag System System Diagram Front Passenger Airbags (Front, side airbags) Airbag Sensor Assembly Driver Airbags (Front, knee, side airbags) Front Passenger Seat Belt Pretensioner Driver Seat Belt Pretensioner Curtain Shield Airbag (LH) Curtain Shield Airbag (RH) Front Airbag Sensor (LH) Front Airbag Sensor (RH) Side Airbag Sensor (LH) Side Airbag Sensor (RH) Rear Airbag Sensor (LH) Rear Airbag Sensor (RH) Side Door Airbag Sensor (LH) Side Door Airbag Sensor (RH) Rear Floor Airbag Sensor Front Floor Airbag Sensor Fuel Cut SRS Warning Light ECM Combination Meter V Bus No.1

SRS Airbag System Airbag Deployment Conditions Deployment Airbags Airbag Sensor New ALPHARD Conventional A/B Driver and Front Passenger Airbags Driver Knee Airbag Driver and Front Passenger Pretensioners  Front Airbag Sensor (LH/RH) Airbag Sensor Assembly Side Airbag Curtain Shield Airbag LH Side Airbag Sensor (LH) Front Floor Sensor RH Side Airbag Sensor (RH) Rear Airbag Sensor (LH) Slide Door Airbag Sensor (LH) Rear Floor Sensor Curtain Shield Airbag Sensor (LH) Rear Airbag Sensor (RH) Slide Door Airbag Sensor (RH) Curtain Shield Airbag Sensor (RH)

Twin Moon Roof System General Major difference from previous model Items New ALPHARD Previous Model Moon Roof Type Front  Manual Tilt-up Type Rear Power Slide Type with Jam Protection Function Key-off Operation Discontinued with Linked-operation Transmitter-linked Sliding Roof Open Warning Available N.A. ECU Type EEPROM RAM Communication LIN Communication Direct Line After battery reconnect No need Initialization Need Initialization DTC, Data List, Active Test

Twin Moon Roof System Sliding Roof System System diagram Slide Roof Motor Assembly Overhead Console Sliding Roof ECU Slide Roof Motor Hall ICs Slide OPEN / CLOSE Switch Rear Heater Control Panel Slide OPEN / CLOSE Switch LIN Multiplex Network Master Switch Assembly V Bus No.1 Combination Meter Main Body ECU Window Lock Switch Multi-information Display Buzzer Front Door Courtesy Switch (Driver)

Service Point (Twin Moon Roof System)
Alphard - Body Electrical Service Point (Twin Moon Roof System) Initialization When the sliding roof ECU (Sliding roof drive gear assembly) is replaced or removed and reinstalled, it requires initialization. Procedure Initialization Method A B C 1 Press and hold the CLOSE switch until the sliding roof glass stops and then release the switch 2 Press and hold the CLOSE switch again for 10 sec. or more Press and hold the CLOSE switch until the following movements finish and then release the switch: starts sliding closed >>> erroneously reverses >>> stops operation for 10 sec. Press and hold the CLOSE switch 3 The sliding roof glass starts sliding closed operation and stops at the fully closed position 4 After the sliding roof glass stops, continue pressing the CLOSE switch for 1 sec. or more 5 Check that the sliding roof glass moves slightly rearward and stops at the correct fully closed position Procedure A: When the sliding roof ECU is replaced with a new one Procedure B: When the sliding roof glass does not stop at correct fully closed position Procedure C: When the sliding roof glass erroneously reverses operation

Service Point (Twin Moon Roof System)
Alphard - Body Electrical Service Point (Twin Moon Roof System) Service Information Items Notes DTC  (4 DTCs) Can be checked 5-digit DTCs only on Intelligent Tester B2341 Sensor (Motor) Failure B2343 Position Initialization Incomplete Data List  (14 Data Lists) Open Switch Slide switch open signal / ON or OFF Hall IC1 Pulse Sliding roof operation signal / LO or HI Active Test (2 Active Tests) Slide Roof Operate sliding roof / CLS/UP or OFF Operate sliding roof / OPN/DWN or OFF

Alphard - Body Electrical

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