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Test H: No Module Response/Network On Circuit 70

  1. Inspect NGS tester connector for loose, damaged or corroded terminals. Repair connector as necessary and retest system for normal operation. If connector is okay, go to next step.
  2. Turn ignition off. Inspect Data Link Connector (DLC) for physical damage, bent terminals or corrosion. Pay particular attention to terminals No. 4 (Black wire) and No. 7 (Light Blue/White wire). Repair as necessary and retest system for normal operation. If connector is okay, go to next step.
  3. Disconnect Generic Electronic Module (GEM) Black 23-pin connector C233 located behind instrument panel left of steering column. Measure resistance of Light Blue/White wire between terminal No. 12 at GEM connector C233 and terminal No. 7 at DLC. See Figure and Figure. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open Light Blue/White wire between GEM connector and DLC. Repeat DATA LINK DIAGNOSTIC TEST under COMMUNICATIONS NETWORK DIAGNOSTICS to confirm repair.
  4. Turn ignition on. Using a voltmeter, measure voltage between terminals 4 (Black wire) and No. 7 (Light Blue/White wire) at DLC. See Figure. If any voltage is indicated, go to step 6). If no voltage is indicated, go to next step.
  5. Measure voltage between terminals No. 7 (Light Blue/White wire) and No. 16 (Orange/Light Green wire) at DLC. See Figure. If any voltage is indicated, go to step 17). If no voltage is indicated, no problem is indicated at this time. Repeat DATA LINK DIAGNOSTIC TEST under COMMUNICATIONS NETWORK DIAGNOSTICS.
  6. If vehicle is equipped with Anti-Lock Brake System (ABS), go to next step. If vehicle is not equipped with ABS, go to step 10.
  7. Turn ignition off. Disconnect 76-pin Gray connector C101 located in left rear corner of engine compartment, on safety wall. Turn ignition on. Measure voltage between terminals No. 4 (Black wire) and No. 7 (Light Blue/White wire) at DLC. See Figure. If any voltage is indicated, reconnect all connectors and go to step 10). If no voltage is indicated, go to next step.
  8. Turn ignition off. Disconnect ABS module connector located in left rear of engine compartment. Reconnect connector C101. Turn ignition on. Measure voltage between terminals No. 4 (Black wire) and No. 7 (Light Blue/White wire) at DLC. If any voltage is indicated, repair short to power in Light Blue/White wire between connector C101 and ABS module connector. Repeat DATA LINK DIAGNOSTIC TEST under COMMUNICATIONS NETWORK DIAGNOSTICS to confirm repair. If no voltage is indicated, go to next step.
  9. Turn ignition off. Inspect ABS module connector and connector C101 for loose, damaged or corroded terminals. Repair connectors as necessary and retest system for normal operation. If connectors are okay, replace ABS module. Repeat DATA LINK DIAGNOSTIC TEST under COMMUNICATIONS NETWORK DIAGNOSTICS to confirm repair.
  10. Turn ignition off. Disconnect GEM Black 23-pin connector C233 located behind instrument panel left of steering column. Turn ignition on. Measure voltage between terminals No. 4 (Black wire) and No. 7 (Light Blue/White wire) at DLC. If any voltage is indicated, go to step 12). If no voltage is indicated, go to next step.
  11. Turn ignition off. Inspect GEM connector C233 for loose, damaged or corroded terminals. Repair connector as necessary and retest system for normal operation. If connector is okay, replace GEM. Repeat DATA LINK DIAGNOSTIC TEST under COMMUNICATIONS NETWORK DIAGNOSTICS to confirm repair.
  12. Turn ignition off. Deactivate air bag system. See appropriate AIR BAG RESTRAINT SYSTEMS article. Disconnect air bag diagnostic monitor Black connector C231 located behind left side of instrument panel. Turn ignition on. Measure voltage between terminals No. 4 (Black wire) and No. 7 (Light Blue/White wire) at DLC. If any voltage is indicated, go to step 14). If no voltage is indicated, go to next step.
  13. Turn ignition off. Inspect air bag diagnostic monitor Black connector C231 for loose, damaged or corroded terminals. Repair connector as necessary and retest system for normal operation. If connector is okay, replace air bag diagnostic monitor. Repeat DATA LINK DIAGNOSTIC TEST under COMMUNICATIONS NETWORK DIAGNOSTICS to confirm repair.
  14. If vehicle is equipped with a Remote Anti-Theft Personality (RAP) module, go to next step. If vehicle is not equipped with a RAP module, repair short to power in Light Blue/White wire. Repeat DATA LINK DIAGNOSTIC TEST under COMMUNICATIONS NETWORK DIAGNOSTICS to confirm repair.
  15. Turn ignition off. Disconnect RAP module 26-pin connector C206 located behind center of instrument panel. Turn ignition on. Measure voltage between terminals No. 4 (Black wire) and No. 7 (Light Blue/White wire) at DLC. If any voltage is indicated, repair short to power in Light Blue/White wire between RAP module and DLC. Repeat DATA LINK DIAGNOSTIC TEST under COMMUNICATIONS NETWORK DIAGNOSTICS to confirm repair. If no voltage is indicated, go to next step.
  16. Turn ignition off. Inspect RAP module connector C206 for loose, damaged or corroded terminals. Repair connector as necessary and retest system for normal operation. If connector is okay, replace air bag diagnostic monitor. Repeat DATA LINK DIAGNOSTIC TEST under COMMUNICATIONS NETWORK DIAGNOSTICS to confirm repair.
  17. If vehicle is equipped with ABS, go to next step. If vehicle is not equipped with ABS, go to step 21).
  18. Turn ignition off. Disconnect 76-pin Gray connector C101 located in left rear corner of engine compartment, on safety wall. Measure resistance between terminals No. 4 (Black wire) and No. 7 (Light Blue/White wire) at DLC. If resistance is less than 5 ohms, reconnect all connectors and go to step 21) If resistance is 5 ohms or more, go to next step.
  19. Disconnect ABS module connector located in left rear of engine compartment. Reconnect connector C101. Measure resistance between terminals No. 4 (Black wire) and No. 7 (Light Blue/White wire) at DLC. If resistance is less than 5 ohms, repair short to ground in Light Blue/White wire between connector C101 and ABS module connector. Repeat DATA LINK DIAGNOSTIC TEST under COMMUNICATIONS NETWORK DIAGNOSTICS to confirm repair. If resistance is 5 ohms or more, go to next step.
  20. Inspect ABS module connector and connector C101 for loose, damaged or corroded terminals. Repair connectors as necessary and retest system for normal operation. If connectors are okay, replace ABS module. Repeat DATA LINK DIAGNOSTIC TEST under COMMUNICATIONS NETWORK DIAGNOSTICS to confirm repair.
  21. Disconnect GEM Black 23-pin connector C233 located behind instrument panel left of steering column. Measure resistance between terminals No. 4 (Black wire) and No. 7 (Light Blue/White wire) at DLC. If resistance is less than 5 ohms, go to step 23). If resistance is 5 ohms or more, go to next step.
  22. Inspect GEM connector C233 for loose, damaged or corroded terminals. Repair connector as necessary and retest system for normal operation. If connector is okay, replace GEM. Repeat DATA LINK DIAGNOSTIC TEST under COMMUNICATIONS NETWORK DIAGNOSTICS to confirm repair.
  23. Deactivate air bag system. See appropriate AIR BAG RESTRAINT SYSTEMS article. Disconnect air bag diagnostic monitor Black connector C231 located behind left side of instrument panel. Measure resistance between terminals No. 4 (Black wire) and No. 7 (Light Blue/White wire) at DLC. If resistance is less than 5 ohms, go to step 25). If resistance is 5 ohms or more, go to next step.
  24. Turn ignition off. Inspect air bag diagnostic monitor Black connector C231 for loose, damaged or corroded terminals. Repair connector as necessary and retest system for normal operation. If connector is okay, replace air bag diagnostic monitor. Repeat DATA LINK DIAGNOSTIC TEST under COMMUNICATIONS NETWORK DIAGNOSTICS to confirm repair.
  25. If vehicle is equipped with a Remote Anti-Theft Personality (RAP) module, go to next step. If vehicle is not equipped with a RAP module, repair short to ground in Light Blue/White wire. Repeat DATA LINK DIAGNOSTIC TEST under COMMUNICATIONS NETWORK DIAGNOSTICS to confirm repair.
  26. Disconnect RAP module 26-pin connector C206 located behind center of instrument panel. Measure resistance between terminals No. 4 (Black wire) and No. 7 (Light Blue/White wire) at DLC. If resistance is less than 5 ohms, repair short to ground in Light Blue/White wire between RAP module and DLC. Repeat DATA LINK DIAGNOSTIC TEST under COMMUNICATIONS NETWORK DIAGNOSTICS to confirm repair. If resistance is 5 ohms or more, go to next step.
  27. Inspect RAP module connector C206 for loose, damaged or corroded terminals. Repair connector as necessary and retest system for normal operation. If connector is okay, replace air bag diagnostic monitor. Repeat DATA LINK DIAGNOSTIC TEST under COMMUNICATIONS NETWORK DIAGNOSTICS to confirm repair.
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