B1157

DTC B1157: Gauge Control Module Lost Communication with MICU

1. Clear the DTCs using the HDS.
2. Cycle the ignition switch to OFF and then back ON.
3. Check for DTCs by selecting the DTCs MENU (DTCs) from the HDS.

Is DTC B1157 indicated?

YES - Go to step 4.

NO - Intermittent failure. The gauge control system is OK at this time. Check pinfits and connections.

4. Check for DTCs by selecting the DTCs MENU (DTCs) from the HDS.

Are DTCs B1055 and B1255 also indicated?

YES - Go to Multiplex Integrated Control Unit Input Test. MICU Input Test

NO - Go to Gauge Control Module Input Test. Gauge Control Module Input Test