U0131:00

Anti-Lock Control

Pinpoint Test J: DTC U0131:00

Normal Operation

- DTC U0131:00 (Lost Communication With Power Steering Control Module: No Sub Type Information)- sets in continuous memory and on-demand if the steering sensor message that should be received from the Power Steering Control Module (PSCM) is missing for 5 seconds or longer.

This pinpoint test is intended to diagnose the following:

- PSCM (Power Steering Control Module)

- ABS module

PINPOINT TEST J : DTC U0131:00

J1 VERIFY THE CUSTOMER CONCERN

- Ignition ON.

- Verify there is an observable symptom present.

Is an observable symptom present?

Yes
GO to J2.

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.

J2 CHECK THE COMMUNICATION NETWORK

- Enter the following diagnostic mode on the scan tool: Network Test.

- Carry out the network test.

Does the PSCM (Power Steering Control Module) pass the network test?

Yes
GO to J3.

No
REFER to Information Bus.

J3 RETRIEVE THE RECORDED DTCs FROM THE ABS MODULE AND PSCM (Power Steering Control Module) SELF-TESTS

- Check for recorded ABS module and PSCM (Power Steering Control Module) DTCs from the self-test.

Is DTC U3003:16 (or B11E8:16) or DTC U3003:17 (or B11E8:17) recorded?

Yes
For DTC B11E8:16, GO to Pinpoint Test A Pinpoint Test A: DTC B11E8:16.

For DTC B11E8:17, GO to Pinpoint Test B Pinpoint Test B: DTC B11E8:17.

For the PSCM (Power Steering Control Module) , REFER to Steering.

No
GO to J4.

J4 RECHECK THE ABS MODULE DTCs

- Clear the DTCs.

- Wait 10 seconds.

- Repeat the ABS module self-test.

Is DTC U0131:00 still present?

Yes
GO to J5.

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

J5 CHECK FOR DTC U0131:87 SET IN THE IPC (Instrument Panel Cluster)

- Clear the DTCs.

- Ignition OFF.

- Ignition ON.

- Wait 10 seconds.

- Enter the following diagnostic mode on the scan tool: Self-Test.

- Retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

Is DTC U0131:87 set in the IPC (Instrument Panel Cluster)?

Yes
INSTALL a new PSCM (Power Steering Control Module). CLEAR the DTCs. REPEAT the ABS module self-test.

No
INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . TEST the system for normal operation.