Pinpoint Test G: DTC U0131:00

Anti-Lock Control

Pinpoint Test G: DTC U0131:00

Normal Operation
- DTC U0131:00 (Lost Communication With Power Steering Control Module: No Sub Type Information) - this DTC sets 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
- ABS module

PINPOINT TEST G: DTC U0131:00

-------------------------------------------------
G1 VERIFY THE CUSTOMER CONCERN

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

Yes
GO to G2.

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.

-------------------------------------------------
G2 CHECK THE COMMUNICATION NETWORK

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

Yes
GO to G3.

No
REFER to Module Communications Network Testing and Inspection.

-------------------------------------------------
G3 RETRIEVE THE RECORDED DTCs FROM THE ABS MODULE AND PSCM SELF-TESTS

- Check for recorded ABS module and PSCM DTCs from the self-test.
- Is DTC U3003:16 (or B1318) or DTC U3003:17 (or B1317) recorded?

Yes
For the ABS module, REFER to DTC Charts. [1][2]Diagnostic Trouble Code Descriptions

For the PSCM, REFER to Steering System Testing and Inspection.

No
GO to G4.

-------------------------------------------------
G4 CHECK FOR DTC U0131:00 SET IN OTHER MODULES

- 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 DTCs from all modules.
- Is DTC U0131:00 or DTC U0131 set in more than one module?

Yes
INSTALL a new PSCM. TEST the system for normal operation. CLEAR the DTCs. REPEAT the ABS module self-test.

No
INSTALL a new ABS module. REFER to Hydraulic Control Unit (HCU) Service and Repair. TEST the system for normal operation.

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