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 CausesTERMINAL/CONNECTOR/WIRING HARNESS DAMAGE(F943) FUSED B(+) CIRCUIT OPEN(Z385) GROUND CIRCUIT OPENSTEERING CONTROL MODULE1. CHECK FOR A DTC C121A-STEERING ANGLE SENSOR NOT INITIALIZEDThis DTC must be active for the results of this test to be valid.Turn the ignition on.With the scan tool, read and record DTCs.With the scan tool, read and record Freeze Frame information.With the scan tool, erase DTCs.Road test the vehicle over 30 km/h (19 mph) for at least 30 seconds.With the scan tool, read and record DTCs.Does the scan tool display: C121A-STEERING ANGLE SENSOR NOT INITIALIZED?YesGo To 2 NoPerform 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 DAMAGECheck the Steering Angle Sensor installation.Check all related wiring for bruised, chafed, pierced, or partially broken wires.Check all related connectors for broken, bent, pushed out, or corroded terminals.Were any problems found?YesRepair as necessary.Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE). NoGo To 33. CHECK THE VOLTAGE ON THE (F943) FUSED B(+) CIRCUIT

Turn the ignition off.Disconnect the Steering Control Module harness connector.Turn the ignition on. Measure the voltage of the (F943) Fused B(+) circuit.Is the voltage above 10 volts?YesGo To 4NoRepair 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

Turn the ignition off.Disconnect the Steering Control Module harness connector.Measure the resistance between the (Z385) Ground circuit and ground.Is the resistance below 5.0 ohms?YesReplace the Steering Control Module in accordance with the Service Information.Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE). NoRepair the (Z385) Ground circuit for an open.Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).