VSA System

Control System DTCs

VSA DTC Troubleshooting: 86-14

DTC 86-14 : F-CAN Communication With Gauge Control Module Malfunction

NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot, and review the how to troubleshoot the VSA system Reading and Clearing Diagnostic Trouble Codes.






1. DTC check:

-1. Turn the ignition switch to ON (II).

-2. Clear the DTC with the HDS.

-3. Turn the ignition switch to LOCK (0).

-4. Start the engine for at least 5 seconds.

-5. Check for DTCs with the HDS.






Is DTC 86-14 indicated?
-YES- If DTC 86-14 is only indicated, go to step 2.
-YES- If DTC 86-11 is also indicated, go to DTC 86-11 VSA System.
-NO- Intermittent failure, the system is OK at this time. Refer to intermittent failures troubleshooting.

2. Body electrical system DTC check:

-1. Check for gauge control module DTCs with the HDS.






Are any DTCs indicated?
-YES- Go to indicated DTC's troubleshooting.
-NO- Go to step 3.

3. Open wire check (F CAN-L, F CAN-H lines):

-1. Turn the ignition switch to LOCK (0).

-2. Disconnect the following connectors.






-3. Check for continuity between test points 1 and 2.














Is there continuity?
-YES- The F CAN-L, F CAN-H wires are OK. Go to step 4.
-NO- Repair an open in the wire between the gauge control module and the VSA modulator-control unit.

4. Gauge control module check (substitution):

-1. Substitute a known-good gauge control module Service and Repair.

-2. Reconnect the following connectors.






-3. Turn the ignition switch to ON (II).

-4. Clear the DTC with the HDS.

-5. Turn the ignition switch to LOCK (0).

-6. Start the engine for at least 5 seconds.

-7. Check for DTCs with the HDS.






Is DTC 86-14 indicated?
-YES- Go to step 5.
-NO- Replace the original gauge control module Service and Repair.

5. VSA modulator-control unit check (update):

-1. Update the VSA modulator-control unit if it does not have the latest software Programming and Relearning.

-2. Turn the ignition switch to LOCK (0).

-3. Start the engine for at least 5 seconds.

-4. Check for DTCs with the HDS.





Is DTC 86-14 indicated?
-YES- Check for loose terminals in the VSA modulator-control unit 38P connector. If the VSA modulator-control unit was updated and the symptom/indication is still present, replace the VSA modulator-control unit Service and Repair.
-NO- Troubleshooting is complete. If any other DTCs are indicated, go to the indicated DTCs troubleshooting.