DTC 83

DTC 83: PCM

1. Check for other DTCs.
Is DTC 86 indicated?
YES - Do the troubleshooting for DTC 86.
NO - Go to step 2.

2. Clear the DTC using the HDS.
3. Turn the ignition switch OFF.
4. Disconnect the HDS from the 16P DLC.
5. Test-drive the vehicle.
Do the VSA and VSA activation indicators come on, and is DTC 83 indicated?
YES - Go to step 6.
NO - Intermittent failure, the system is OK at this time.

6. Check the PGM-FI system.
Does the MIL indicator come on or is PCM's DTC indicated?
YES - Do the applicable troubleshooting for PCM.
NO - Go to step 7.

7. Check the VSA system for DTCs.
Is DTC 83 indicated and no PCM's DTC?
YES - Substitute a known-good PCM, and recheck. If the code returns, check for loose terminals in the VSA modulator-control unit 47P connector. If necessary, substitute a known-good VSA modulator-control unit, and recheck.
NO - Intermittent failure, the system is OK at this time.