B1177
DTC B1177: Abnormal Battery VoltageNOTE: If you are troubleshooting multiple 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 OFF, and then back ON.
3. Check for DTCs with the HDS.
Is DTC B1177 indicated?
YES - Go to step 5.
NO - Go to step 4.
4. Crank the engine.
Is DTC B1177 indicated?
YES - Go to step 5.
NO - Intermittent failure, the gauge control module and power supply voltage (IG1) that is supplied to the gauge control module are OK at this time. The battery may have been discharged and recovered.
5. Check the battery and the charging system.
Is the battery condition normal and the charging system OK?
YES - Go to step 6.
NO - Recharge or replace the battery, or repair the charging system.
6. With gauge control module connector B (28P) still connected, check for voltage between the No. 1 terminal and body ground.
Is there battery voltage?
YES - Go to step 7.
NO - Repair an open or high resistance in the PNK wire between the gauge control module and driver's under-dash fuse/relay box.
7. Disconnect the gauge control module connectors.
8. Check for continuity between gauge control module connector A (20 A) terminal No. 7 and connector B (28P) terminal No. 1.
Is there battery voltage?
YES - Replace the gauge control module.
NO - Repair an open or high resistance in the BLK wire between the gauge control module and ground (G501).