DTC B1170: Gauge Control Module Lost Communication With the VSA Modulator-Control Unit (VSA 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 B1170 Indicated?

YES -Go to step 5.

NO -Intermittent failure, the system is OK at this time. Check for loose or poor connections.
Check for VSA system DTCs with the HDS (see GENERAL TROUBLESHOOTING INFORMATION ).
Are any DTCs indicated?

YES -Go to the indicated DTCs, then recheck.

NO -Go to step 6.
Turn the ignition switch to LOCK (0).
Disconnect the gauge control module 32P connector.
Disconnect the VSA modulator-control unit 47P connector.
Check for continuity between gauge control module 32P connector terminals No. 20 and No. 19 and VSA modulator-control unit 47P connector terminals No. 12 and No. 13 respectively.

Fig 1: Checking Continuity Between Gauge Control Module 32P Connector Terminals No. 20 & No. 19 And VSA Modulator-Control Unit 47P Connector Terminals No. 12 & No. 13
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

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

NO -Repair an open in the wire.