VSA System

VSA DTC Troubleshooting: 83

DTC 83:

ECM/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 -

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/PCM DTCs indicated?

YES -

Do the appropriate troubleshooting for the ECM/PCM.�

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.�