VSA System

VSA DTC Troubleshooting: 83

DTC 83: PCM Communication

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

2. Check for DTCs with the HDS.

Is DTC 86 indicated?
YES - Do the troubleshooting for DTC 86. 86

NO - Go to step 3.


3. Clear the DTC with the HDS.

4. Test-drive the vehicle at 19 mph (30 km/h) or more.
NOTE: Drive the vehicle on the road, not on a lift.

5. Check for DTCs with the HDS.

Is DTC 83 indicated?
YES - Go to step 6.

NO - Intermittent failure, the system is OK at this time. Check for loose terminals in the VSA modulator-control unit 47P connector. Refer to intermittent failures troubleshooting. Reading and Clearing Diagnostic Trouble Codes


6. Check for fuel and emissions systems DTCs with the HDS. Reading and Clearing Diagnostic Trouble Codes

Are any PCM DTCs indicated?
YES - Do the applicable troubleshooting for the PCM.

NO - Go to step 7.


7. 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

8. Test-drive the vehicle at 19 mph (30 km/h) or more.
NOTE: Drive the vehicle on the road, not on a lift.

9. Check for DTCs with the HDS.

Is DTC 83 indicated?
YES - Check for loose terminals in the VSA modulator-control unit 47P 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.