DTC B1185: Gauge Control Module Lost Communication With Motor Control Module (BATT 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 to LOCK (0) and then back to ON (II).
- Wait for at least 6 seconds.
- Check for DTCs with the HDS.
Is DTC B1185 indicated?
YES -Go to step 5.
NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections.
- Check for IMA system DTCs with the HDS (see
GENERAL TROUBLESHOOTING INFORMATION
).
Is any DTCs indicated?
YES -Go to the indicated DTC, then recheck.
NO -Go to step 6.
- Turn the ignition switch to LOCK (0).
- Disconnect the gauge control module 32P connector.
- Disconnect motor control module connector A (31P).
- Check for continuity between gauge control module 32P connector terminals No. 20 and No. 19 and motor control module connector A (31P) terminals No. 31 and No. 30 respectively.Fig 1: Checking Continuity Between Gauge Control Module 32P Connector Terminals No. 20 & No. 19 And Motor Control Module Connector A (31P) Terminals No. 31 & No. 30
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES -Substitute a known-good motor control module, and recheck. If the indication goes away, replace the original motor control module (see MOTOR CONTROL MODULE (MCM) REMOVAL/INSTALLATION ). If the DTC is still present, replace the gauge control module (see GAUGE CONTROL MODULE REPLACEMENT ).
NO -Repair an open in the wire.