VSA System

VSA DTC Troubleshooting: 83

DTC 83: ECM 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.
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 ECM DTCs indicated?
YES - Do the applicable troubleshooting for the ECM.

NO - Check for loose terminals in the VSA modulator-control unit 47P connector. If necessary, substitute a known-good VSA modulator-control unit, Service and Repair and retest.