B1169

DTC B1168: Gauge Control Module Lost Communication with the PCM (ENG Message)

DTC B1169: Gauge Control Module Lost Communication with the PCM (A/T Messages)

NOTE: If you are troubleshooting multipule DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A.

1. Clear the DTCs with the HDS.
2. Turn the ignition switch to LOCK (0), and then back ON (II).
3. Wait for 6 seconds or more.
4. Check for DTCs with the HDS.

Is DTC B1168 or B1169 indicated?

YES - Go to step 5.

NO - Intermittent failure, the system is OK at this time. Check for loose or poor connections.

5. Check for Fuel and Emission system DTCs with the HDS.

Is any DTCs indicated?

YES - Go to the indicated DTCs, then recheck.

NO - Go to step 6.

6. Turn the ignition switch to LOCK (0).
7. Disconnect the gauge control module 36P connector.
8. Jump the SCS line with the HDS.
9. Disconnect PCM connector A (44P).
10. Connect the gauge control module 36P connector No. 33 and No. 34 terminals and body ground with jumper wires.






11. Check for continuity between PCM connector A (44P) No. 36 and No. 37 terminals and body ground individually.






Is there less than 3 ohms?

YES - Update the PCM if it does not have the latest software, or substitute a known-good PCM, and recheck. If the indication goes away, replace the original PCM. If the DTC is still present, replace the gauge control module.

NO - Repair an open in the wire.