DTC B1173: Gauge Control Module Lost Communication with 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 (see TROUBLESHOOTING - B-CAN SYSTEM DIAGNOSIS TEST MODE A
).
- Clear the DTCs with the HDS.
- Turn the ignition switch OFF, and then back ON (II).
- Check for 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 (see BATTERY ), and the charging system.
- Check for DTCs in the TPMS with the HDS.
Are any DTCs indicated?
YES - Go to the TPMS indicated DTCs troubleshooting.
NO - Go to step 5.
- Do the gauge control module input test (see GAUGE CONTROL MODULE INPUT TEST
).
Are all inputs OK?
YES - Go to step 6.
NO - Repair the faulty input, then recheck the DTCs.
- Substitute a known-good gauge control module.
- Clear the DTCs with the HDS.
- Turn the ignition switch OFF, and then back ON (II).
- Check for DTCs with the HDS.
Is DTC B1173 indicated?
YES - Check for loose or poor connections at the TPMS control unit. If continuities are good, replace the TPMS control unit.
NO - The original gauge control module is faulty; replace it (see GAUGE CONTROL MODULE REPLACEMENT ).