U1504

U1504-IMPLAUSIBLE MESSAGE DATA LENGTH RECEIVED FROM STEERING ANGLE SENSOR

For a complete wiring diagram Refer to Diagram/Electrical Electrical Diagrams


- When Monitored:

Continuously with the ignition on.

- Set Condition:

When the Anti-Lock Brake Module detects an incorrect CAN message from the Steering Angle Sensor.







Diagnostic Test


1. CHECK FOR A DTC U1504-IMPLAUSIBLE MESSAGE DATA LENGTH RECEIVED FROM STEERING ANGLE SENSOR

NOTE: Diagnose and repair any Steering Angle Sensor DTCs in the Steering Column Module, any communication DTCs in the SCM, FCM or PCM and any system under voltage or over voltage DTCs before continuing with this test.

NOTE: This DTC must be active for the results of this test to be valid.

Turn the ignition on.

With the scan tool, read DTCs.

Record DTC and Freeze Frame information.

With the scan tool, erase DTCs.

Cycle the ignition switch off then on.

With the scan tool, read DTCs.

Does the scan tool display: U1504-IMPLAUSIBLE MESSAGE DATA LENGTH RECEIVED FROM STEERING ANGLE SENSOR?

Yes

- Go To 2

No

- The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires.
- Refer to the ABS-INTERMITTENT CONDITION TEST. ABS Intermittent Condition Test


2. CHECK THE WIRING HARNESS, TERMINALS, AND CONNECTORS

Visually inspect the related wiring harness. Look for any bruised, chafed, pierced, or partially broken wires.

Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.

Monitor the scan tool data relative to this circuit while performing a wiggle test on the wiring. Look for the data to change other than as expected or for the DTC to reset.

Refer to any Technical Service Bulletins that apply.

Were any problems found?

Yes

- Repair as necessary.
- Perform ABS VERIFICATION TEST. ABS Verification Test

No

- Go To 3


3. STEERING ANGLE SENSOR

Replace the Steering Angle Sensor.

Perform ABS VERIFICATION TEST. ABS Verification Test

Did DTC U1504-IMPLAUSIBLE MESSAGE DATA LENGTH RECEIVED FROM STEERING ANGLE SENSOR reset?

Yes

- Replace the Anti-Lock Brakes Module.
- Perform ABS VERIFICATION TEST. ABS Verification Test

No

- Test Complete.