DTC Troubleshooting: 91

DTC 91: VSA Operation Clear the DTC using the HDS. Disconnect the HDS from the 16P DLC. Turn the ignition switch OFF, then turn it ON (II) again. Test-drive the vehicle around a number of corners. Is DTC 91 indicated?
YES | - | Go to Step 5 .
NO | - | The system is OK at this time.■
Substitute a known-good sensor cluster. Clear the DTC using the HDS. Disconnect the HDS from the 16P DLC. Turn the ignition switch OFF, then turn it ON (II) again. Test-drive the vehicle around a number of corners. Is DTC 91 indicated?
YES | - | Go to Step 9 .
NO | - | Replace the original sensor cluster.■
Turn the ignition switch OFF. Disconnect the VSA control unit 47P connector, and steering angle sensor 5P connector. Turn the ignition switch ON (II). Measure the voltage between body ground and the VSA control unit 47P connector terminal No. 5, and No. 7 individually. Is there 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 14 .

Measure the voltage between body ground and the VSA control unit 47P connector terminal No. 3, No. 28, and No. 30 individually. Is there 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 15 .
Turn the ignition switch OFF. |

Check for continuity between body ground and the VSA control unit 47P connector terminal 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 17 .

Check for continuity between body ground and the VSA control unit 47P connector terminal 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 18 .

Check for continuity between the VSA control unit 47P connector terminal No. 5, No. 7 and steering angle sensor 5P connector terminal No. 1, No. 5 individually. Is there continuity?
YES | - | Go to Step 19 .
NO | - | Repair open in the wire between the VSA modulator-control unit and the steering angle sensor.■

Check for continuity between the VSA control unit 47P connector terminal No. 3, No. 28, No. 30 and steering angle sensor 5P connector terminal No. 2, No. 3, and No. 4 individually. Is there continuity?
YES | - | Go to Step 20 .
NO | - | Repair open in the wire between the VSA modulator-control unit and the steering angle sensor.■
Substitute a known-good steering angle sensor. Reconnect all of the disconnected connectors. Clear the DTC using the HDS. Disconnect the HDS from the 16P DLC. Turn the ignition switch OFF, then turn it ON (II) again. Test-drive the vehicle around a number of corners. Is DTC 91 indicated?
YES | - | Replace the VSA modulator-control unit. ■
NO | - | Replace the steering angle sensor. ■