VSA System

VSA DTC Troubleshooting: 83

DTC 83:

PCM Communication Error

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

2. Check for DTCs with the HDS.

Is DTC 86 indicated with DTC 83 at the same time?

YES -

Do the DTC 86 troubleshooting 86.�

NO -

Go to step 3.

3. Check for fuel and emissions system DTCs with the HDS Initial Inspection and Diagnostic Overview.

Are any DTCs indicated?

YES -

Do the applicable troubleshooting for the PCM.�

NO -

Go to step 4.

4. Clear the DTC with the HDS.

5. Turn the ignition switch to LOCK (0), then turn it to ON (II) again.

6. Check for DTCs with the HDS.

Is DTC 83 indicated?

YES -

Check for loose terminals in the VSA modulator-control unit 46P connector. If necessary, substitute a know-good VSA modulator-control unit Service and Repair, then retest. If the VSA modulator-control unit was substituted, go to step 1.

NO -

Intermittent failure, the system is OK at this time. Check for loose terminals between the PCM connector A (44P) and the VSA modulator-control unit 46P connector. Refer to intermittent failures troubleshooting Reading and Clearing Diagnostic Trouble Codes.�