Pinpoint Test D : DTC (Diagnostic Trouble Code) U0131:87
- D1 VERIFY THE CUSTOMER CONCERN
- Ignition ON.
- Verify there is an observable symptom present.
Is an observable symptom present?
Yes GO to D2 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. - D2 CHECK THE COMMUNICATION NETWORK
- Using a diagnostic scan tool, perform a network test.
Does the PSCM pass the network test?
Yes GO to D3 No REFER to: Communications Network . - D3 CHECK THE BCM (BODY CONTROL MODULE) CONTINUOUS MEMORY DIAGNOSTIC TROUBLE CODES (CMDTCS)
- Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs).
- Wait 10 seconds.
- Using a diagnostic scan tool, check the BCM Continuous Memory Diagnostic Trouble Codes (CMDTCs).
Are any control module input power Diagnostic Trouble Codes (DTCs) recorded?
Yes For DTC U3006:16, U3007:16, U3013:16 and/or U3014:16, GO to Pinpoint Test P For DTC U3006:17, U3007:17, U3013:17 and/or U3014:17, GO to Pinpoint Test Q For DTC U3006:1C, GO to Pinpoint Test R No GO to D4 - D4 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.
Is DTC U3003:16, DTC U3003:17 or DTC U3003:68 recorded?
Yes REFER to: Power Steering . No GO to D5 - D5 RECHECK THE BCM (BODY CONTROL MODULE) CONTINUOUS MEMORY DIAGNOSTIC TROUBLE CODES (CMDTCS)NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during the PMI or the PMI may not have been carried out.
- Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs).
- Wait 10 seconds.
- Using a diagnostic scan tool, check the BCM Continuous Memory Diagnostic Trouble Codes (CMDTCs).
Is DTC U0131:87 still present?
Yes GO to D6 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. - D6 CHECK THE GWM (GATEWAY MODULE A) DIAGNOSTIC TROUBLE CODES (DTCS)
- Using a diagnostic scan tool, check the GWM Continuous Memory Diagnostic Trouble Codes (CMDTCs).
Are any Diagnostic Trouble Codes (DTCs) recorded?
Yes REFER to: Communications Network . No GO to D7 - D7 CHECK FOR DIAGNOSTIC TROUBLE CODE (DTC) U0131:87 SET IN OTHER MODULES
- Using a diagnostic scan tool, clear the Diagnostic Trouble Codes (DTCs).
- Ignition OFF.
- Ignition ON.
- Wait 10 seconds.
- Using a diagnostic scan tool, retrieve all Continuous Memory Diagnostic Trouble Codes (CMDTCs).
Is DTC U0131:00 or DTC U0131:87 set in any other module?
Yes Refer to ELECTRONIC POWER ASSIST STEERING COMPONENT TESTING No Refer to BCM HARDWARE TESTING