Pinpoint Test V : DTC: U0140:00

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.

V1 VERIFY CUSTOMER CONCERN

Ignition ON.

Verify there is an observable symptom present.

Is an observable symptom present?

Yes

GO to V2

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

V2 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 V3

No REFER to: Communications Network .

V3 RECHECK THE SCME (FRONT SEAT CLIMATE CONTROL 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 SCME self-test.

Is DTC U0140:00 still present?

Yes

GO to V4

No	The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.

V4 CHECK FOR DTC U0140:00 IN OTHER MODULES

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).

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 U0140:00 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 SCME. Refer to: Driver Front Seat Module (DSM) .