DTC 27: Steering Angle Sensor

Check the size, air pressure, and amount of wear of all four tires, and check the wheel alignment (see WHEEL ALIGNMENT ).
Is the tire condition and wheel alignment OK?

YES - Go to step 2.

NO - Make sure the suspension is not modified, and adjust the wheel alignment correctly, and recheck by test-driving.
Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Test-drive the vehicle around a number of corners.
NOTE: Drive the vehicle on the road, not on a lift.
Check for DTCs with the HDS.
Is DTC 64 indicated?

YES - Do the appropriate troubleshooting for the DTC.

NO - Go to step 6.
Turn the ignition switch to LOCK (0).
Disconnect the steering angle sensor 5P connector.
Disconnect the VSA modulator-control unit 47P connector (see step 2 ).
Turn the ignition switch to ON (II).
Measure the voltage between body ground and VSA modulator-control unit 47P connector terminals No. 5, and No. 7 individually.
Is there 0.1 V or more?

YES - Repair short to power in the wire between the VSA modulator-control unit and the steering angle sensor.

NO - Go to step 11.

Fig 1: Measuring Voltage Between Body Ground & VSA Modulator - Control Unit 47P Connector Terminals No. 5 & 7
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Measure the voltage between body ground and VSA modulator-control unit 47P connector terminals No. 3, No. 28, and No. 30 individually.
Is there 0.1 V or more?

YES - Repair short to power in the wire between the VSA modulator-control unit and the steering angle sensor.

NO - Go to step 12.

Fig 2: Measuring Voltage Between Body Ground & VSA Modulator - Control Unit 47P Connector Terminals No. 3, 28 & 30
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Turn the ignition switch to LOCK (0).
Check for continuity between body ground and VSA modulator-control unit 47P connector terminals No. 5 and No. 7 individually.
Is there continuity?

YES - Repair short to body ground in the wire between the VSA modulator-control unit and the steering angle sensor.

NO - Go to step 14.

Fig 3: Checking Continuity Between Body Ground & VSA Modulator-Control Unit 47P Connector Terminals No. 5 & 7
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check for continuity between body ground and VSA modulator-control unit 47P connector terminals No. 3, No. 28, and No. 30 individually.
Is there continuity?

YES - Repair short to body ground in the wire between the VSA modulator-control unit and the steering angle sensor.

NO - Go to step 15.

Fig 4: Checking Continuity Between Body Ground & VSA Modulator-Control Unit 47P Connector Terminals No. 3, 28 & 30
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check for continuity between VSA modulator-control unit 47P connector terminals No. 5, No. 7 and steering angle sensor 5P connector terminals No. 1, No. 5 individually.
Is there continuity?

YES - Go to step 16.

NO - Repair open in the wire between the VSA modulator-control unit and the steering angle sensor.

Fig 5: Checking Continuity Between VSA Modulator-Control Unit 47P Connector Terminals No. 5 & No. 7
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Check for continuity between VSA modulator-control unit 47P connector terminals No. 3, No. 28, No. 30 and steering angle sensor 5P connector terminals No. 3, No. 2 and No. 4 individually.
Is there continuity?

YES - Go to step 17.

NO - Repair open in the wire between the VSA modulator-control unit and the steering angle sensor.

Fig 6: Checking Continuity Between VSA Modulator-Control Unit 47P Connector Terminals No. 3, 28 & 30
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Substitute a known-good steering angle sensor (see STEERING ANGLE SENSOR REPLACEMENT ).
Reconnect all connectors.
Turn the ignition switch to ON (II).
Clear the DTC with the HDS.
Test-drive the vehicle around a number of corners.
NOTE: Drive the vehicle on the road, not on a lift
Check for DTCs with the HDS.
Is DTC 27 indicated?

YES - 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.

NO - Check for loose terminals in the steering angle sensor 5P connector. If the connections are OK, replace the steering angle sensor (see STEERING ANGLE SENSOR REPLACEMENT ).