B1173

DTC Troubleshooting: B1173

DTC B1173:

Gauge Control Module Lost Communication With the TPMS Control Unit (TPMS 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. Check for the DTCs with the HDS.

Is DTC B1173 indicated?

YES -

Go to step 4.

NO -

Intermittent failure, the F-CAN communication line is OK at this time. Check for loose or poor connections. If the connections are good, check the battery condition Testing and Inspection, and the charging system.�

4. Check for DTCs in the TPMS.

Are any DTCs indicated?

YES -

Troubleshoot the TPMS DTCs with the HDS.�

NO -

Go to step 5.

5. Turn the ignition switch to LOCK (0).

6. Disconnect gauge control module 36P connector.

7. Disconnect the TPMS control unit 20P connector.

8. Check for continuity between gauge control module 36P connector terminals No. 28 and No. 29 and TPMS control unit 20P connector terminals No. 1 and No. 11 respectively.





Is there continuity?

YES -

Go to step 9.

NO -

Repair an open or high resistance in the wire between the gauge control module and the TPMS control unit.�

9. Check for poor connections, power, and ground to the TPMS control unit. If OK, substitute a known-good TPMS control unit.

10. Check for DTCs with the HDS.

Is DTC B1173 indicated?

YES -

Replace the gauge control module Service and Repair.�

NO -

Replace the original TPMS control unit Service and Repair.�