MANUAL TRANSMISSION ELECTRICAL

OBJECTIVES n Diagnose electrical problems by logic and symptom description. n Perform troubleshooting procedures using meters, test lights, and jumper wires. n Repair electrical wiring. n Replace electrical connectors. Page 369 Lab

OBJECTIVES n Locate, test,adjust, and replace electrical switches on a transmission. n Locate, test, and replace transmission related solenoids. n Test, and replace electromagnetic clutches. n Diagnose transmission -related electronic control circuits. Page 369 Lab

BASIC ELECTRICAL TERMS n CIRCUIT n VOLTAGE (Use Voltmeter) n CURRENT (Use Ammeter) n RESISTANCE (Use Ohmmeter) n LOAD n POWER SOURCE Shop Manual - Page 369

OHM GUYS Ohms Law It takes 1 volt to push 1 amp through 1 ohm of resistance.

TYPES OF CIRCUITS n SERIES n PARALLEL n SERIES PARALLEL Shop Manual - Page 255

SIMPLE CIRCUIT n Power source n Conductors n Load n May include Circuit protection Circuit control Class Manual - Page 209

TYPES OF CIRCUIT FAILURES n Opens Circuits n Shorted Circuits n Grounded Circuits n Poor Connection (common to transmission problems) Shop Manual - Page 372

ELECTRICAL CONNECTIONS n Many different electrical connections Must be clean and dry Must be secure and tight Oil and water will deteriorate connections Wiring condition must be in good shape Shop Manual - Page 372

PROTECTION DEVICES n Fuses Cartridge Blade Ceramic n Fusible Links n Maxi-Fuses n Circuit Breakers Shop Manual - Page 383

ELECTRICAL CONTROLS n Switches Controlled by Driver of Car Mechanical Linkages Predetermined Condition (Programmed) – Hydraulically Controlled High or Low Pressure n Normally Open / Normally Closed n Insulated side of circuit n Ground side of circuit Shop Manual - Page 385

PRESSURE SWITCHES n Normally Open Single Contact Switch n Normally Open Dual Contact Switch Apply Air to Test Ohmmeter

NEUTRAL SAFETY SWITCH n Clutch Start Switch n Electrical Operation and Circuit Prevents Starter from engaging in gear n Backup Light Switch n Testing and Adjusting Can use Voltmeter or Ohmmeter Shop Manual - Page 385

SPEED SENSORS n Magnetic Pulse Generators n Hall-effect switch n Light Emitting Diode Shop Manual - Page 389

ELECTRICAL INPUTS n Sensors Vary Electricity through circuit Potentiometers (variable resistors

ELECTRICAL OUTPUTS n Solenoids Change electrical energy into Mechanical energy Control Shifting Control Hydraulic Pressure Shop Manual - Page 270

ELECTRICAL OUTPUTS n RELAYS Normally Open Relay Normally Closed Relay Single Contact Double Contact Shop Manual - Page 257

ELECTRONIC DEFAULTS n Faulty sensor signal will cause transmission to go into default mode n It will protect itself from destruction n Testing for Electronic faults Scanners Jumper Wires Transmission Testers Shop Manual - Page 54 and 283

ADAPTIVE STRATEGY (Computer Relearn) n Relearn after Repair (bat disconnected) n Driveability Concerns n Relearn Procedures Shop Manual - Page 68-69

CIRCUIT BOARD n Install a WHITE wire between 55 & 60. n Install a RED wire between 57 & 167. n Install a WHITE wire between 168 & 169. n Install a GREEN wire between 170 & 58. RK

AVAILABLE VOLTAGE n Place black lead of voltmeter on terminal 58 and red lead on terminal 57. n Black 58 - Red 167Switch off n Black 58 - Red 168 Switch off n Black 58 - Red 169 Switch off n Black 58 - Red 170 Switch off n Record Readings RK

AVAILABLE VOLTAGE n Place black lead of voltmeter on terminal 58 and red lead on terminal 57. n Black 58 - Red 167Switch on n Black 58 - Red 168 Switch on n Black 58 - Red 169 Switch on n Black 58 - Red 170 Switch on n Record Readings RK

See Ya Later Dudes!!