Diagnostic Test

PERFORM THE LONGITUDINAL G-SENSOR ROUTINE
1. Turn the ignition on.
2. With the scan tool, read and record the ABS DTCs.
  WARNING:
  To avoid possible serious or fatal injury, check brake capability is available before road testing.
3. With the scan tool, perform the "Longitudinal G-Sensor" routine and perform and the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  Was the routine successful?
  
  Yes
  - Go To 2.
  No
  - Perform the "Longitudinal G-Sensor" routine again, if still unsuccessful.
  - Go To 3.
VERIFY IF THE DTC IS STILL ACTIVE
1. Turn the ignition on.
2. With the scan tool, erase the DTCs.
  WARNING:
  To avoid possible serious or fatal injury, check brake capability is available before road testing.
3. Test drive the vehicle by turning the vehicle left and right in a curving manner at a velocity between 15 and 35 km/h (9 and 22 mph).
4. Park the vehicle.
5. With the scan tool, read ABS DTCs.
  Is this DTC still active?
  
  Yes
  - Go To 3.
  No
  - Test complete.
ANTI-LOCK BRAKE SYSTEM (ABS) MODULE
1. Turn the ignition off to the lock position.
2. Replace the Steering Angle Sensor (SAS) in accordance with the Service Information. Refer to CLOCKSPRING, REMOVAL .
3. Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
4. Test drive the vehicle by turning the vehicle left and right in a curving manner at a velocity between 15 and 35 km/h (9 and 22 mph).
5. With the scan tool, read the DTCs.
  Does the DTC remain active?
  
  Yes
  - Replace the Anti-Lock Brake System (ABS) Module in accordance with the Service Information. Refer to MODULE, ANTI-LOCK BRAKE SYSTEM, REMOVAL .
  - Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  No
  - Test complete.