Pinpoint Test K : U0151:87

WARNING: This page is about a different car, the 2018 Lincoln Navigator. However, it is still accessible from the selected car via links, so may be relevant.

K1 CHECK THE COMMUNICATION NETWORK
- Ignition ON.
- Using a diagnostic scan tool, carry out the Network Test.
Does the RCM pass the Network Test?

Yes GO to K2

No DIAGNOSE the RCM does not respond to the diagnostic scan tool. REFER to:MODULE COMMUNICATIONS NETWORK (2 OF 2) .

K2 CHECK THE VDM (VEHICLE DYNAMICS CONTROL MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)

Using a diagnostic scan tool, carry out the VDM self-test.

Clear the Diagnostic Trouble Codes (DTCs).

Ignition ON.

Ignition OFF.

Using a diagnostic scan tool, carry out the VDM self-test.

Record the VDM Diagnostic Trouble Codes (DTCs).

Is DTC U0151:87 retrieved again?

Yes

GO to K3

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.

K3 REVIEW THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCS) FROM THE VDM (VEHICLE DYNAMICS CONTROL MODULE) SELF-TEST
- Check the recorded Diagnostic Trouble Codes (DTCs) from the VDM self-test.
Is DTC U3003:16 or U3003:17 present in the VDM?

Yes If DTC U3003:16 is present, GO to Pinpoint Test A If DTC U3003:17 is present, GO to Pinpoint Test B

No GO to K4

K4 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS) IN THE RCM (RESTRAINTS CONTROL MODULE)
- Using a diagnostic scan tool, carry out the RCM self-test.
Are any Diagnostic Trouble Codes (DTCs) present in the RCM?

Yes DIAGNOSE the RCM Diagnostic Trouble Codes (DTCs). REFER to:Airbag Supplemental Restraint System (SRS) .

No GO to K5

K5 CHECK FOR OTHER CAUSES OF COMMUNICATION NETWORK CONCERN

NOTE: If new modules were installed prior to the DTC being set, the module configuration can be incorrectly set during the PMI or the PMI may not have been carried out.

Check the vehicle service history for recent service actions related to the RCM or VDM. If recent service history is found:
- verify the correct replacement module was installed.
  - HVBOM may be used to verify correct part fitment.
- verify the configuration of replacement module was correct.
  - re-configure the module using as-built data if prior configuration is suspect.
- verify the module was not obtained from a like vehicle and installed into customer vehicle.
  - return the swapped module to source vehicle and obtain new replacement module.

Operate the system and determine if the observable symptom is still present.

Is the observable symptom still present?

Yes

GO to K6

No	The system is operating correctly at this time. The concern may have been due to incorrect parts replacement procedures or incorrect module configuration.

K6 CHECK FOR DTC (DIAGNOSTIC TROUBLE CODE) U0151:XX SET IN OTHER MODULES

Using a diagnostic scan tool, carry out the self-test for all modules.

Is DTC U0151:xx set in 1 or more modules in addition to the VDM?

Yes

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no Technical Service Bulletins (TSBs) exist for this concern, INSTALL a new RCM module. REFER to: RESTRAINTS CONTROL MODULE (RCM) .

CHECK OASIS for any applicable service articles: TSB, GSB, SSM or FSA. If a service article exists for this concern, DISCONTINUE this test and FOLLOW the service article instructions. If no Technical Service Bulletins (TSBs) exist for this concern, INSTALL a new VDM module. REFER to:Vehicle Dynamics Control Module (VDM) .