B1170

DTC B1170: Gauge Control Module Lost Communication with the ABS Modulator-Control Unit (ABS message)

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

Is DTC B1170 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 ABS modulator-control unit.

5. Check for ABS 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 OFF.
7. Disconnect gauge control module connector C (40P).
8. Disconnect the ABS modulator-control unit 25P connector.
9. Connect gauge control module connector C (40P) No. 12 and No. 13 terminals and body ground with jumper wires.






10. Check for continuity between the ABS modulator-control unit 25P connector No. 1 and No. 17 terminals and body ground individually.






Is there less than 3 ohms?

YES - Substitute a known-good ABS modulator-control unit, and recheck. If the indication goes away, replace the original ABS modulator-control unit. If the DTC is still present, replace the gauge control module.

NO - Repair an open in the wire.