C121A-STEERING ANGLE SENSOR NOT INITIALIZED
For a complete wiring diagram Refer to Section 8W.
- When Monitored:
With the ignition on.
- Set Condition:
When the Anti-Lock Brake Module detects a low voltage at the Steering Angle Sensor or Steering Angle Sensor failure.
| Possible Causes |
| TERMINAL/CONNECTOR/WIRING HARNESS DAMAGE |
| (F943) FUSED B(+) CIRCUIT OPEN |
| (Z385) GROUND CIRCUIT OPEN |
| STEERING CONTROL MODULE |
Diagnostic Test
1.CHECK FOR A DTC C121A-STEERING ANGLE SENSOR NOT INITIALIZEDNOTE: This DTC must be active for the results of this test to be valid.
Does the scan tool display: C121A-STEERING ANGLE SENSOR NOT INITIALIZED?
Yes
- Go To 2
No
- Perform the ABS Intermittent Condition diagnostic procedure.
- Refer to the ABS-INTERMITTENT CONDITION TEST. (Refer to 5 - BRAKES - DIAGNOSIS AND TESTING)
2.CHECK THE TERMINALS/CONNECTORS/WIRING HARNESS FOR DAMAGE
Were any problems found?
Yes
- Repair as necessary.
- Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).
No
- Go To 3
3.CHECK THE VOLTAGE ON THE (F943) FUSED B(+) CIRCUIT
Is the voltage above 10 volts?
Yes
- Go To 4
No
- Repair the (F943) Fused B(+) circuit for an open.
- Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).
4.CHECK THE RESISTANCE OF THE (Z385) GROUND CIRCUIT
Is the resistance below 5.0 ohms?
Yes
- Replace the Steering Control Module in accordance with the Service Information.
- Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).
No
- Repair the (Z385) Ground circuit for an open.
- Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).