Pinpoint Test Ah : DTC U0140:00
WARNING: This page is about a different car, the 2017 Lincoln Navigator and 2017 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.
- AH1 VERIFY THE CUSTOMER'S CONCERN
- Ignition ON.
- Verify if there is an observable symptom present.
Is an observable symptom present?
Yes GO to AH2. 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. - AH2 CHECK THE COMMUNICATION NETWORK
- Using a diagnostic scan tool, perform a network test.
Does the BCM pass the network test?
Yes GO to AH3. No REFER to Module Communications Network . - AH3 RETRIEVE THE BCM DTCs
- Using a diagnostic scan tool, perform the BCM self-test.
Are any non-network DTCs recorded in the BCM ?
Yes GO to AH4. No REFER to Multifunction Electronic Modules . - AH4 RECHECK FOR DTC U0140:00
- Using a diagnostic scan tool, clear all CMDTCs.
- Ignition OFF.
- Ignition ON.
- Wait at least 10 seconds.
- Using a diagnostic scan tool, retrieve the APIM CMDTCs.
Is DTC U0140:00 still set in the APIM ?
Yes GO to AH5. 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. - AH5 RETRIEVE THE RECORDED DTCs FROM THE APIM SELF-TEST
- Using a diagnostic scan tool, perform the APIM self-test.
Are any non-network DTCs recorded?
Yes REFER to the Accessory Protocol Interface Module (APIM) DTC Chart . No GO to AH6. - AH6 CHECK FOR DTC U0140 SET IN MULTIPLE MODULES
- Review the CMDTCs from all modules.
Is DTC U0140 set in more than one module?
Yes GO to AH7. No If there is an observable symptom, REFER to the Symptom Charts to diagnose the observed symptom. If there is no observable symptom, the system is operating correctly at this time. The DTC may have been set due to high network traffic or an intermittent fault condition. - AH7 CHECK FOR CORRECT BCM OPERATION
- Ignition OFF.
- Disconnect and inspect all the BCM connectors.
- Repair:
- Corrosion (clean module pins or install new connectors or terminals)
- Damaged or bent pins (install new terminals or pins)
- Pushed-out pins (install new pins as necessary)
- Reconnect the BCM 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 TSBs. If a TSB exists for this concern, DISCONTINUE this test and FOLLOW TSB instructions. If no TSBs address this concern, BCM Hardware Testing . 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.