DTC 73-1

DTC 73-1: MAP (Manifold Absolute Pressure) Sensor or PCM

NOTE: Before you troubleshoot, review the general troubleshooting information.

1. Turn the ignition switch ON (II).
2. Clear the DTCs with the HDS.
3. Test-drive the vehicle, and check for DTCs with the HDS.
Is DTC 73-1 indicated?
YES - Go to step 4.
NO - Intermittent failure, the system is OK at this time.
4. Check for DTCs in the PGM-FI system with the HDS.
Are there any PGM-FI DTC's indicated?
YES - Go to the indicated DTC's troubleshooting.
NO - Check for loose terminal fit in the VTM-4 control unit and the PCM connectors. If it is normal, replace the VTM-4 control unit.