DTC B1173: Gauge Control Module Lost Communication With TPMS Control Unit (TPMS message)

WARNING: This page is about a different car, the 2013 Honda Fit, 2012 Honda Fit, 2011 Honda Fit, 2010 Honda Fit, and 2009 Honda Fit. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: If you are troubleshooting multiple DTCs, be sure to follow the instructor is 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 to LOCK (0) and then back to ON (II).
Wait for at least 6 seconds.
Check for DTCs with the HDS.
Is DTC B1173 indicated?

YES - Go to step 5.

NO - Intermittent failure, the system is OK at this time. Check for loose or poor connections.
From the system select menu, select TPMS.
Does the HDS communicate with the TPMS control unit?

YES - Go to step 6.

NO - Go to symptom troubleshooting TPMS indicator does not go off, and no DTCs are stored (see TPMS INDICATOR DOES NOT COME ON, AND NO DTCS ARE STORED ).
Check for DTCs in the TPMS with the HDS.
Are any DTCs indicated?

YES - Go to the indicated DTCs troubleshooting, then recheck.

NO - Go to step 7.
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. 29 and No. 30 and TPMS control unit 20P connector terminals No. 11 and No. 2 respectively.
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 open in the wires.

Fig 1: Checking Continuity Between Gauge Control Module 32P & TPMS Control Unit 20P Connector Terminals
Courtesy of AMERICAN HONDA MOTOR CO., INC.