YES -
Go to step 8.
NO -
Replace the original wheel speed sensor See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Wheel Speed
Sensor/Service and Repair.?
8. Turn the ignition switch to LOCK (0).
9. Substitute an appropriate known-good hub bearing unit: Front See: Steering and Suspension/Steering/Front Steering Knuckle/Service and
Repair, Rear See: Steering and Suspension/Suspension/Rear Knuckle/Service and Repair.
10. Turn the ignition switch to ON (II).
11. Clear the DTC with the HDS.
12. Test-drive the vehicle at 10 mph (15 km/h) or more.
13. Check for DTCs with the HDS.
Is DTC 12, 14, 16, or 18 indicated?
YES -
Go to step 14.
NO -
Replace the original hub bearing unit:
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14. Update the VSA modulator-control unit if it does not have the latest software See: Brakes and Traction Control/Antilock Brakes / Traction
Control Systems/Traction Control Module/Testing and Inspection. If the unit already has the latest software, substitute a known-good VSA
modulator-control unit See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Traction Control Module/Service and
Repair.
15. Test-drive the vehicle at 10 mph (15 km/h) or more.
NOTE: Drive the vehicle on a straight section of road, not on a lift.
16. Check for DTCs with the HDS.
Is DTC 12, 14, 16, or 18 indicated?
YES -
Check for loose terminals in the VSA modulator-control unit 46P connector. Check for a loose connection at G303. If the VSA modulator-control
unit was updated, substitute a known-good VSA modulator-control unit See: Brakes and Traction Control/Antilock Brakes / Traction Control
Systems/Traction Control Module/Service and Repair, then retest. If the VSA modulator-control unit was substituted, go to step 1.
NO -
If the VSA modulator-control unit was updated, troubleshooting is complete. If the VSA modulator-control unit was substituted, replace the
original VSA modulator-control unit See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Traction Control
Module/Service and Repair. If any other DTCs are indicated, go to the indicated DTCs troubleshooting.?
20
Adaptive Cruise Control (ACC) DTC Troubleshooting: 20
DTC 20:
Steering Angle Sensor Malfunction
NOTE: Before doing this troubleshooting procedure, check the steering angle sensor installation See: Brakes and Traction Control/Antilock Brakes
/ Traction Control Systems/Steering Angle Sensor/Service and Repair.
1. Check for VSA system DTCs with the HDS.
