DTC B1183: Gauge Control Module Lost Communication With EPS Control Unit (EPS 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 B1183 indicated?

YES -Go to step 5.

NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections.
Check for DTCs in the EPS with the HDS.
Are any DTCs indicated?

YES -Go to the indicated DTCS TROUBLESHOOTING , then recheck.

NO -Go to step 6.
Turn the ignition switch to LOCK (0).
Disconnect the gauge control module 32P connector.
Disconnect EPS control unit connector C (16P).
Check for continuity between gauge control module 32P connector terminals No. 20 and No. 19 and EPS control unit connector C (16P) terminals No. 10 and No. 9 respectively.

Fig 1: Checking Continuity Between Gauge Control Module 32P Connector Terminals No. 20 & No. 19 And EPS Control Unit Connector C (16P) Terminals No. 10 & No. 9
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Substitute a known-good EPS control unit, and recheck. If the indication goes away, replace the original EPS control unit (see EPS CONTROL UNIT REMOVAL/INSTALLATION ). If the DTC is still present, replace the gauge control module (see GAUGE CONTROL MODULE REPLACEMENT ).

NO -Repair an open in the wires.