B1189

DTC Troubleshooting: B1189

DTC B1189: Gauge Control Module Lost Communication with Active Damper System Control Unit (ADS Message)

1. Clear the DTCs with the HDS.

2. Turn the ignition switch to LOCK (0) and then back ON (II).

3. Wait for more than 6 seconds.

4. Check for DTCs with the HDS.

Is DTC B1188 indicated?
YES - Go to step 5.

NO - Intermittent failure, the system is OK at this time. Check for loose or poor connections between the gauge control module and the active damper control unit.


5. Check for active damper system DTCs with the HDS.

Are there 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 gauge control module connector A (12P). Service and Repair

8. Disconnect active damper control unit connector B (14P). Service and Repair

9. Connect gauge control module connector A (12P) connector terminals No. 6 and No. 12 to body ground with jumper wires.






10. Check for continuity between body ground and active damper control unit connector B (14P) terminals No. 1 and No. 8 respectively.

Is there continuity?
YES - Substitute a known-good active damper control unit Service and Repair, and recheck. If the indication goes away, replace the original active damper control unit. Service and Repair If the DTC is still present, replace the gauge control module. Service and Repair

NO - Repair an open in the wire.