DTC 64-12

DTC 64-12: Steering Angle Sensor Power Circuit Open
1. Turn the ignition switch ON (II).
2. Clear the DTC with the HDS. Turn the ignition switch OFF, then ON (II) again.
3. Check for DTCs with the HDS.
Is DTC 64-12 indicated?
YES - Go to step 4.
NO - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the steering angle sensor and the VSA modulator-control unit.
4. Turn the ignition switch OFF.
5. Disconnect the steering angle sensor 5P connector.
6. Disconnect the VSA modulator-control unit 37P connector.





7. Check for continuity between VSA modulator-control unit 37P connector terminal No. 7 and steering angle sensor 5P connector terminal No. 5.
Is there continuity?
YES - Go to step 8.
NO - Repair open in the wire between steering angle sensor and the VSA modulator-control unit.
8. Turn the ignition switch ON (II).





9. Measure voltage between VSA modulator-control unit 37P connector terminal No. 7 and body ground.
Is there battery voltage?
YES - Repair open in the wire between steering angle sensor and the VSA modulator-control unit.
NO - Check for loose terminals in the VSA modulator-control unit 37P connector. If necessary, substitute a known-good VSA modulator-control unit and retest. If DTCs are not indicated, replace the VSA modulator-control unit.