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1 Copyright © 2008 General Motors Corporation. All Rights Reserved.
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2 Body Control and Communication Systems Session 2 Course #18044.17D2 Welcome to
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3 The material contained in this course component was accurate and current at the time of course development
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4 www.gmtraining.com Web Site
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5 Question 1 In which of the following regions is your dealership located? A.Atlanta B.Chicago C.Dallas D.Los Angeles E.New York
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6 Upon successful completion of this course, you will be able to apply concepts and applications of body controllers with multiple inputs and outputs, multiplexing, and complex networks in GM automotive applications. Course Goal
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7 Diagnose RVS condition Diagnose No-start condition Session 2 Objectives
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8 Review proper module configuration Review proper RVS operation Discuss RVS enabling/disabling parameters Module 3 Objectives
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9 Module to module interactions Inputs to modules Remote start description & operation Module 3 Topics
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10 Diagnostic Scenario 2 Vehicle:2006 Impala with 12,000 miles Customer Concern:Remote Start Inoperable
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11 RCDLR BCM ECM LOW HIGH Gateway between TDM SERIAL DATA RKE Transmitter
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12 Range 60 Meters RCDLR Antenna BCM Starter Relay IGN. Other ECU ’ s B+ Run/Crank relay Hood Switches GMLAN ECM HVAC GMLAN TDM Serial Data
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13 Document Numbers 1704081Programming Theft Deterrent System Components 1759118Remote Vehicle Start Inoperative 1749290Symptoms – Keyless Entry 1645896Symptoms - Vehicle 1645895Diagnostic System Check - Vehicle DOCUMENT ID#TITLE
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14 What is the first step in diagnosing our customer concern? Question
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15 In our preliminary checks, we did not find any concerns. What should our next step be? Question
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16 Range 60 Meters RCDLR Antenna BCM Starter Relay IGN. Other ECU ’ s B+ Run/Crank relay Hood Switches GMLAN ECM HVAC GMLAN TDM SERIAL DATA
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17 Buttons Scan tool Keyless Entry Tester Check Transmitter:
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19 RVS History
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21 Module 3 Summary Proper module configuration RVS inoperable condition
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22 Posttest Question 1 Because of software limitations, RVS CANNOT be attempted more than ___ times without physically cycling the ignition. A.1 B.2 C.3 D.4 30 2928272625242322212019181716151413121110 9 8 7 6 5 4 3 2 1 0
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23 Posttest Question 2 During our preliminary checks (DSC-V), aftermarket devices or components are of no concern. TRUEFALSE 30 2928272625242322212019181716151413121110 9 8 7 6 5 4 3 2 1 0
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24 Posttest Question 3 The first step in diagnosing a Remote Start Vehicle (RVS) concern is to ________________. A.Check the ECM with the Tech 2 B.Verify RVS enabled in PMM C.Verify RVS enabled in RCDLR D.Verify RVS enabled in DIC 30 2928272625242322212019181716151413121110 9 8 7 6 5 4 3 2 1 0
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25 Posttest Question 4 It is possible to go through SPS and reconfigure the TDM to ensure that it is RVS enabled. TRUEFALSE 30 2928272625242322212019181716151413121110 9 8 7 6 5 4 3 2 1 0
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26 Posttest Question 5 Whenever a module is replaced, it is likely the replaced module will require __________. A.SPS Programming B.Software updates C.Flash Memory D.Nothing 30 2928272625242322212019181716151413121110 9 8 7 6 5 4 3 2 1 0
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27 Describe ignition switch operation and modes Review starting sequence and operation Review Power Moding principles Module 4 Objectives
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28 DSC – V visual Inspection Power Moding System operation & wiring schematics Module 4 Topics
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29 Diagnostic Scenario 3 Vehicle:2006 Cadillac STS-V with 8,000 miles Customer Concern:Vehicle will not start
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30 Loose or corroded battery cables Open fuses Low voltage issues DSC-V – Look for:
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31 Low voltage could set false DTCs Check voltage during diagnostics Voltage could drop quickly DSC-V could cause voltage drop Battery Voltage Issues
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32 Off Accessory On/Off Start STS-V Ignition Switch modes:
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33 GMLANGMLAN Power ModingPower Moding SwitchSwitch IPMIPM If no green light – check:
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34 Question In the 2006 STS, the ____ functions as the BACKUP Power Mode Master? A.ECM B.IPM C.BCM D.RCDLR
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35 Switch inactive Switch stuck Start button malfunction Open/Short circuit fault Power Mode Fault Detection
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36 Non-communicating Modules Amplifier LOW SPEED DPM LOW SPEED DDM LOW SPEED DDS LOW SPEED DSCC HIGH SPEED
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37 Non-communicating Modules cont. ESC — HIGH SPEED HUD — LOW SPEED HCM — LOW SPEED HVAC — LOW SPEED IPC — LOW SPEED
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38 Non-communicating Modules cont. LRDM — LOW SPEED PDM — LOW SPEED RIM — LOW SPEED RCDLR — LOW SPEED
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39 Non-communicating Modules cont. RRDM — LOW SPEED SIR — LOW SPEED TV/AM — LOW SPEED VCIM — HIGH/LOW SPEED
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40 RPO Code sticker
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41 Non-Communicating Tech 2 Screen
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42 DMM Pin 5 Ground – Step 8
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43 Push/Pull Test – Step 9
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44 Pin 22 to DLC Pin 1- Step 10
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45 DLC Pin 1 Voltage
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46 DLC Pin 1 Resistance
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47 We have a lot of modules that are not communicating, but our network seems to be fine. Where do we go next? Question
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48 What should we do next? Question
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49 Terminal A1 power check
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50 Terminal B1 power check
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51 R44 Relay Check – Power
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52 R43 Relay Check – No Power
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53 R23 Terminal Check
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54 R22 Terminal Check
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55 R21 Terminal Check
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56 Power at IPM
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57 C1 Pin 6 at IPM
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58 Module 4 Summary Reviewed Power Moding principles Diagnosed a No Start condition Corrected the No Start condition
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59 Course Summary Reviewed proper module configuration Diagnosed and corrected an RVS condition Diagnosed and corrected a No-start condition
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60 Posttest Question 6 If the green light on the start button does not illuminate when attempting to start the vehicle, which of the following could be causing the concern? A.GMLAN shorted/open B.Power Moding C.IPM/PMM D.All of the above 30 2928272625242322212019181716151413121110 9 8 7 6 5 4 3 2 1 0
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61 Posttest Question 7 On vehicles that have several control modules connected by serial data circuits, one module is the _______________. A.GMLAN B.RCDLR C.Class 2 circuit D.Power mode master 30 2928272625242322212019181716151413121110 9 8 7 6 5 4 3 2 1 0
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62 Posttest Question 8 On the Cadillac STS-V the ______ is the PMM. A.ECM B.BCM C.IPM D.RCDLR 30 2928272625242322212019181716151413121110 9 8 7 6 5 4 3 2 1 0
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63 Posttest Question 9 You should repeatedly check voltage during diagnostics because if the voltage drops too low __________. A.the Tech 2 will pull DTCs B.false DTCs could set C.DTCs cannot set D.the PMM will lock out the system 30 2928272625242322212019181716151413121110 9 8 7 6 5 4 3 2 1 0
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64 Posttest Question 10 With Functional Diagnostics, all possible modules will be displayed even if the specific vehicle you are working on is NOT equipped. TRUEFALSE 30 2928272625242322212019181716151413121110 9 8 7 6 5 4 3 2 1 0
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65 Session Summary Explained power moding Described networked module systems Explained GMLAN benefits Diagnosed and programmed a control module
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66 Session Summary cont. Diagnosed RVS condition Diagnosed No-start condition
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67 To Obtain Posttest Results After 5 Business Days go to: www.gmtraining.com Select “Training Records” from menu Select “View Your Training Records”
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68 Body Control and Communication Systems Session 2 Course #18044.17D2 Thank you for attending
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69 Copyright © 2008 General Motors Corporation. All Rights Reserved.
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