DTC 83

DTC 83: ECM Communication
1. Turn the ignition switch ON (II).
2. Check the DTC using the HDS.
Is DTC 86 indicated?
YES - Do the troubleshooting for DTC 86.
NO - Go to step 3.

3. Clear the DTC using the HDS.
4. Turn the ignition switch OFF, then disconnect the HDS.
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 - The system is OK at this time.

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

7. Turn the ignition switch ON (II).
8. Clear the DTC using the HDS.
9. Test-drive the vehicle.
Is DTC 83 indicated? and no PGM-FI system's DTC?
YES - Check for loose terminals in the VSA modulator-control unit 47P connector. If necessary, substitute a known-good VSA modulator-control unit, and retest.
NO - The system is OK at this time.