Pinpoint Test Ac : DTC: U0422:00
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.
- AC1 VERIFY CUSTOMER CONCERN
- Ignition ON.
- Verify there is an observable symptom present.
Is an observable symptom present?
Yes GO to AC2 No The system is operating normally at this time. The DTC may have been set due to high network traffic or intermittent fault condition. - AC2 CHECK THE COMMUNICATION NETWORK
- Ignition ON.
- Using a diagnostic scan tool, perform the network test.
Does the BCM pass the network test?
Yes GO to AC3 No REFER to: Communications Network . - AC3 RECHECK THE SCMG (DRIVER MULTI-CONTOUR SEAT MODULE) / SCMH (PASSENGER MULTI-CONTOUR SEAT MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.
- Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
- Using a diagnostic scan tool, repeat the SCMG/ SCMH self-test.
Is DTC U0422:00 still present?
Yes GO to AC4 No The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition. - AC4 CHECK FOR DTC U0422:00 IN OTHER MODULESNOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during PMI or the PMI may not have been carried out.
- Using a diagnostic scan tool, clear the Continuous Memory Diagnostic Trouble Codes (CMDTCs).
- Ignition OFF.
- Ignition ON.
- Wait 10 seconds.
- Using a diagnostic scan tool, retrieve the Continuous Memory Diagnostic Trouble Codes (CMDTCs) from all modules.
Is DTC U0422:00 set in other modules?
Yes BCM guided routine is not applicable for this vehicle and market. Replace the component that was faulted through service information diagnosis. No INSTALL a new SCMG or SCMH. Refer to: Driver Multi-Contour Seat Module [SCMG] .