B1170

DTC Troubleshooting: B1170

DTC B1170:

Gauge Control Module Lost Communication with VSA Modulator-Control Unit (VSA Message)

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructions in B-CAN System Diagnosis Test Mode A Troubleshooting - 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 to ON (II).

3. Wait for at least 6 seconds.

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 connection between the gauge control module and the VSA modulator-control unit.�

5. Check for VSA System DTCs with the HDS.

Are there any DTCs indicated?

YES -

Go to and troubleshoot 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).

8. Disconnect the VSA modulator-control unit 46P connector.

9. Check for continuity between VSA modulator-control unit 46P connector terminals No. 38 and No. 39 and gauge control module connector A (12P) connector terminals No. 6 and No. 12 respectively.





Is there continuity?

YES -

Update the VSA modulator-control unit if it does not have the latest software Testing and Inspection, or substitute a known-good VSA modulator-control unit Service and Repair, and recheck. If the indication goes away, replace the original VSA modulator-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.�