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DTC Troubleshooting: B1168

DTC B1168:
 Gauge Control Module Lost Communication with ECM/PCM (Engine Messages)
  1. Clear the DTCs with the HDS.
  1. Turn the ignition switch to LOCK (0), and then back to ON (II).
  1. Wait for 6 seconds or more.
  1. Check for DTCs with the HDS.
Is DTC B1168 indicated?
Go to Step 5 .
NO -
Intermittent failure, the system is OK at this time. Check for loose or poor connections.■
Is any DTCs indicated?
Go to the indicated DTCs, then recheck.
NO -
Go to Step 6 .
  1. Turn the ignition switch to LOCK (0).
  1. Disconnect the gauge control module 32P connector.
  1. Jump the SCS with the HDS.
  1. Disconnect the ECM/PCM connector A (49P).
  1. Connect the gauge control module 32P connector No. 29 and No. 30 terminals and body ground with jumper wires.

  1. Check for continuity between ECM/PCM connector A (49P) No. 3 and No. 4 terminals and body ground individually.
Is there continuity?
NO -
Repair an open in the wire.■