VSA System

VSA DTC Troubleshooting: 83

DTC 83: PCM Communication

1. Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode.

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 - The system is OK at this time.


6. Check for fuel and emissions systems DTCs with the HDS. Initial Inspection and Diagnostic Overview

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.