83-13

VSA DTC Troubleshooting: 83-13, 83-14

DTC 83-13: ECM/PCM Communication Error (Engine Malfunction)

DTC 83-14: ECM/PCM Communication Error (A/T Malfunction)

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

2. Clear the DTC with the HDS.

3. Test-drive the vehicle.
NOTE: Drive the vehicle on a straight section of road, not on a lift.

4. Check for DTCs with the HDS.

Is DTC 83-13 or 83-14 indicated?
YES - Go to step 5.

NO - Intermittent failure, the system is OK at this time. Check for loose terminals between ECM/PCM connector A (49P) and the VSA modulator-control unit 36P connector. Refer to intermittent failures troubleshooting. How to Troubleshoot the VSA System


5. Update the ECM/PCM if it does not have the latest software, ECM/PCM Update or substitute a known-good ECM/PCM. Initial Inspection and Diagnostic Overview

6. Clear the DTC with the HDS.

7. Test-drive the vehicle.
NOTE: Drive the vehicle on a straight section of road, not on a lift.

8. Check for DTCs with the HDS.

Is DTC 83-13 or 83-14 indicated?
YES - Go to step 9.

NO - If the ECM/PCM was updated, troubleshooting is complete If the ECM/PCM was substituted, replace the original ECM/PCM.. Service and Repair


9. Update the VSA modulator-control unit if it does not have the latest software. Testing and Inspection If the unit already has the latest software, substitute a known-good VSA modulator-control unit. Service and Repair

10. Test-drive the vehicle.
NOTE: Drive the vehicle on a straight section of road, not on a lift.

11. Check for DTCs with the HDS.

Is DTC 83-13 or 83-14 indicated?
YES - Check for loose terminals in the VSA modulator-control unit 36P connector. If the VSA modulator-control unit was updated, substitute a known-good VSA modulator-control unit, Service and Repair then retest. If the VSA modulator-control unit was substituted, go to step 1.

NO - If the VSA modulator-control unit was updated, troubleshooting is complete. If the VSA modulator-control unit was substituted, replace the original VSA modulator-control unit. Service and Repair If any other DTCs are indicated, go to the indicated DTCs troubleshooting.