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Pinpoint Test I : DTC (Diagnostic Trouble Code) U0131:87

  1. I1 VERIFY THE CUSTOMER CONCERN

    • Ignition ON.
    • Verify there is an observable symptom present.

    Is there an observable symptom present? 

    Yes  GO to  I2
    No  CLEAR the DTC. The system is operating normally at this time. The DTC may have been set due to high network traffic or an intermittent fault condition.

  2. I2 CHECK THE COMMUNICATION NETWORK

    • Using a diagnostic scan tool, perform a network test.

    Does the PSCM pass the network test? 

    Yes  GO to  I3
    No  REFER to: COMMUNICATIONS NETWORK

  3. I3 RETRIEVE THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE PSCM (POWER STEERING CONTROL MODULE) SELF-TEST

    • Using a diagnostic scan tool, perform the PSCM self-test.

    Are any Diagnostic Trouble Codes (DTCs) present? 

    Yes  DIAGNOSE the PSCM Diagnostic Trouble Codes (DTCs). REFER to: Power Steering
    No  GO to  I4

  4. I4 RECHECK THE IPMA (IMAGE PROCESSING MODULE A) CONTINUOUS MEMORY DIAGNOSTIC TROUBLE CODES (CMDTCS)

    • Using a diagnostic scan tool, clear the IPMA Diagnostic Trouble Codes (DTCs).
    • Ignition OFF.
    • Wait 10 seconds.
    • Ignition ON.
    • Wait 10 seconds.
    • Retrieve the IPMA Continuous Memory Diagnostic Trouble Codes (CMDTCs).

    Is DTC U0131:87 still present? 

    Yes  GO to  I5
    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.

  5. I5 CHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U0131 SET IN OTHER MODULES

    • Using a diagnostic scan tool, clear all Diagnostic Trouble Codes (DTCs).
    • Ignition OFF.
    • Ignition ON.
    • Wait 10 seconds.
    • Retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.

    Is DTC U0131 set in any other module? 

    Yes  GO to  I6
    No  GO to  I7

  6. I6 CHECK FOR CORRECT PSCM (POWER STEERING CONTROL MODULE) OPERATION

    • Ignition OFF.
    • Disconnect and inspect all PSCM connectors and related in-line connectors.
    • Repair:
      • corrosion (install new connector or terminals - clean module pins)
      • damaged or bent pins - install new terminals/pins
      • pushed-out pins - install new pins as necessary
    • Reconnect the PSCM connectors and related in-line connectors. Make sure they seat and latch correctly.
    • Operate the system and determine if the concern is still present.

    Is the concern still present? 

    Yes  CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, Refer to Electronic Power Assist Steering Component Testing (Except Electric Vehicle) .
    No  The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. ADDRESS the root cause of any connector or pin issues.

  7. I7 CHECK FOR CORRECT IPMA (IMAGE PROCESSING MODULE A) OPERATION

    • Disconnect and inspect the IPMA connector and related in-line connectors.
    • Repair:
      • corrosion (install new connector or terminals - clean module pins)
      • damaged or bent pins - install new terminals/pins
      • pushed-out pins - install new pins as necessary
    • Reconnect the IPMA connector and related in-line connectors. Make sure they seat and latch correctly.
    • Operate the system to determine if the concern is still present.

    Is the concern still present? 

    Yes  CHECK OASIS for any applicable Technical Service Bulletins (TSBs). If a TSB exists for this concern, DISCONTINUE this test and FOLLOW the TSB instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new IPMA. REFER to: Image Processing Module A (IPMA) 
    No  The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
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