DTC 81: Central Processing Unit (CPU)
- Turn the ignition switch ON (II).
- Check for other DTCs with the HDS.
Is another DTC indicated?
YES -Do the appropriate troubleshooting for the DTC.
NO -Go to step 3.
- Clear the DTC with the HDS.
- Turn the ignition switch OFF, then disconnect the HDS.
- Test-drive the vehicle.
- Check for DTCs with the HDS.
Is DTC 81 indicated?
YES -Go to step 7.
NO -Intermittent failure, the vehicle is OK at this time (see INTERMITTENT FAILURES ).
- Turn the ignition switch OFF.
- Disconnect the VSA modulator-control unit 47P connector, the steering angle sensor 5P connector, and the yaw rate-lateral acceleration sensor 5P connector.
- Start the engine.
- Measure the voltage between VSA modulator-control unit 47P connector terminal No. 35 and body ground.Fig 1: Measuring Voltage Between VSA Modulator-Control Unit 47P Connector Terminal No. 35 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there 0.1 V or more?
YES -Repair short to power in the wire between the VSA modulator-control unit, the yaw rate-lateral acceleration sensor, and the steering angle sensor.
NO -Go to step 11.
- Check for continuity between VSA modulator-control unit 47P connector terminal No. 35 and body ground.Fig 2: Checking Continuity Between VSA Modulator-Control Unit 47P Connector Terminal No. 35 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES -Repair short to body ground in the wire between the VSA modulator-control unit, the yaw rate-lateral acceleration sensor, and the steering angle sensor.
NO -Check for loose terminals in the VSA modulator-control unit 47P connector. If necessary, substitute a known-good VSA modulator-control unit (see VSA MODULATOR-CONTROL UNIT REMOVAL AND INSTALLATION ), and retest.