DTC U0127: 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 )
- If the HDS does not communicate with the TPMS control unit, the TPMS indicator stay on, and no TPMS DTCs are stored, go to symptom troubleshooting for TPMS indicator does not go off, and no DTCs are stored (see TPMS INDICATOR DOES NOT GO OFF, AND NO DTCS ARE STORED )
- Clear the DTCs with the HDS
- Turn the ignition switch to LOCK (0) and then back to ON (II)
- Wait for 6 seconds or more
- Check for DTCs with the HDS
Is DTC U0127 indicated?
YES -Go to step 5
NO -Intermittent failure, the system is OK at this time Check for loose or poor connections
- Check for TPMS DTCs with the HDS
Is any DTCs indicated?
YES -Go to the indicated DTC's troubleshooting, then recheck
NO -Go to step 6
- Turn the ignition switch to LOCK (0)
- Disconnect the gauge control module 32P connector
- Disconnect the TPMS control unit 20P connector
- Check for continuity between gauge control module 32P connector terminals No 21 and No 22 and the TPMS control unit 20P connector terminals No 1 and No 11 respectivelyFig 1: Identifying Continuity Between Gauge Control Module 32P Connector Terminals No 21 And No 22 And TPMS Control Unit 20P Connector Terminals No 1 And No 11
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES -Substitute a known-good TPMS control unit, and recheck If the indication goes away, replace the original TPMS control unit If the DTC is still present, replace the gauge control module (see GAUGE CONTROL MODULE REPLACEMENT )
NO -Repair an open in the wire