C1219-STEERING ANGLE SENSOR ERRATIC PERFORMANCE

For a complete wiring diagram Refer to Section 8W.

When Monitored:
With the ignition on.
Set Condition:
If the Anti-Lock Brake Module detects that the calculated steering wheel angle exceeds what is physically possible.

Possible Causes

VEHICLE DAMAGE

STEERING COLUMN / INTERMEDIATE SHAFT DAMAGE

STEERING WHEEL ALIGNMENT

STEERING ANGLE SENSOR LOOSE

STEERING ANGLE SENSOR IMPROPERLY INSTALLED (WRONG MOUNTING POSITION)

WIRING HARNESS, TERMINAL, CONNECTOR DAMAGE

(A108) FUSED IGNITION SWITCH OUTPUT (RUN-ACC) CIRCUIT HIGH RESISTANCE

(Z907) GROUND CIRCUIT HIGH RESISTANCE

STEERING ANGLE SENSOR

ANTI-LOCK BRAKES MODULE

Diagnostic Test

1.PERFORM TEST DRIVE & VERIFY DTC IS STILL ACTIVE

WARNING: Ensure brake capability is available before road testing.

Does this DTC reset?

Yes

Go To 2

Refer to the INTERMITTENT CONDITION diagnostic procedure.
Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).

2.INSPECT VEHICLE, STEERING COLUMN, & INTERMEDIATE SHAFT FOR DAMAGE

NOTE: If possible, check vehicle repair history for collision damage.

Were any problems found?

Yes

Repair as necessary.
Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).

Go To 3

3.CHECK STEERING ANGLE SENSOR OUTPUT

Is the Steering Angle Sensor Position within ± 15° degrees?

Yes

Go To 8

Go To 4

4.CHECK STEERING ANGLE SENSOR INSTALLATION

WARNING: To avoid personal injury or death, on vehicles equipped with airbags, disable the supplemental restraint system before attempting any steering wheel, steering column, airbag, occupant classification system, seat belt tensioner, impact sensor, or instrument panel component diagnosis or service. Disconnect and isolate the battery negative (ground) cable, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the supplemental restraint system. Failure to take the proper precautions could result in accidental airbag deployment.

NOTE: Proper Steering Angle Sensor installation is crucial for proper operation.

Is the Steering Angle Sensor properly installed?

Yes

Go To 5

Repair as necessary and clear offsets by initializing ECU with wheels pointing straight ahead.
Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).

5.INSPECT RELATED WIRING HARNESS, TERMINALS, & CONNECTORS

Were any problems found?

Yes

Repair as necessary.
Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).

Go To 6

6.CHECK (A108) FUSED IGNITION SWITCH OUTPUT (RUN-ACC) CIRCUIT FOR HIGH RESISTANCE

Is the voltage above 11.0 volts?

Yes

Go To 7

Repair the (A108) Fused Ignition Switch Output (Run-ACC) circuit for high resistance.
Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).

7.CHECK (Z907) GROUND CIRCUIT FOR HIGH RESISTANCE

Is the resistance below 5.0 ohms?

Yes

Replace the Steering Angle Sensor in accordance with the Service Information and clear offsets by initializing ECU with wheels pointing straight ahead. Refer to ABS VERIFICATION TEST - VER 1. (Refer to 5 - BRAKES - STANDARD PROCEDURE).

Repair the (Z907) Ground circuit for high resistance.
Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).

8.CHECK STEERING ANGLE SENSOR OUTPUT WHILE ROTATING THE STEERING WHEEL

Perform ECU Initialization and drive test.

Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).

Did the steering angle change accordingly?

Yes

Replace the Anti-Lock Brake Module in accordance with the Service Information.
Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).

Replace the Steering Angle Sensor in accordance with the Service Information and clear offsets by initializing ECU with wheels pointing straight ahead.
Perform ABS VERIFICATION TEST. (Refer to 5 - BRAKES - STANDARD PROCEDURE).