Pinpoint Tests AL: DTC U0126

Instrumentation and Warning Chimes

Pinpoint Tests

Pinpoint Test AL: DTC U0126

- DTC U0126 (Lost Communication With Steering Angle Sensor Module) - sets in continuous memory if data messages received from the Steering Angle Sensor Module (SASM) over the High Speed Controller Area Network (HS-CAN) are missing for greater than 5 seconds.

This pinpoint test is intended to diagnose the following:

- SASM
- Instrument Cluster (IC)



PINPOINT TEST AL: DTC U0126

-------------------------------------------------
AL1 VERIFY THE CUSTOMER CONCERN


- Ignition ON.
- Verify that there is an observable symptom present.
- Is an observable symptom present?

Yes
GO to AL2.

No
The system is operating normally at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

-------------------------------------------------
AL2 CHECK THE COMMUNICATION NETWORK


- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Network Test.
- Carry out the network test.
- Does the SASM pass the network test?

Yes
GO to AL3.

No
REFER to Information Bus.

-------------------------------------------------
AL3 RETRIEVE THE RECORDED DTCs FROM THE IC SELF-TEST


- Check for recorded IC DTCs from the self-test.
- Is DTC B1317 or DTC B1318 recorded?

Yes
GO to Pinpoint Test AG (B1317) or GO to Pinpoint Test AH (B1318). Pinpoint Tests AG: DTC B1317 Pinpoint Tests AH: DTC B1318

No
GO to AL4.

-------------------------------------------------
AL4 RECHECK THE IC DTCs


- Clear the DTCs. Repeat the IC self-test.
- Is DTC U0126 still present?

Yes
INSTALL a new SASM. REFER to Antilock Brakes / Traction Control Systems. CLEAR the DTCs. REPEAT the IC self-test.

If DTC U0126 is still present, INSTALL a new IC. REFER to Instrument Cluster (IC) Service and Repair. TEST the system for normal operation.

No
The system is operating correctly at this time. The DTC may have been set due to high network traffic.

-------------------------------------------------