Pinpoint Test O: DTC U0140
WARNING: This page is about a different car, the 2012 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.
- O1 VERIFY THE CUSTOMER CONCERN
- Ignition ON.
- Verify that there is an observable symptom present.
- Is an observable symptom present?
- Yes : GO to O2.
- 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.
- O2 CHECK THE COMMUNICATION NETWORK
- Ignition ON.
- Using a scan tool, carry out a Network Test.
- Does the BCM pass the network test?
- Yes : GO to O3.
- No : REFER to MODULE COMMUNICATIONS NETWORK .
- O3 RETRIEVE THE RECORDED DTCs FROM THE ABS MODULE AND BCM SELF-TESTS
- Enter the following diagnostic mode on the scan tool: Self Test - ABS Module.
- Enter the following diagnostic mode on the scan tool: Self Test - BCM.
- Is DTC B1676 (or U3003:16) or DTC U3003:17 recorded?
- Yes
: For ABS module DTC B1676, GO to Pinpoint Test A .
For BCM DTCs, REFER to MULTIFUNCTION ELECTRONIC MODULES .
- No : GO to O4.
- Yes
: For ABS module DTC B1676, GO to Pinpoint Test A .
- O4 CHECK FOR DTC U0140 OR U0140:00 SET IN OTHER MODULES
- Clear the DTCs.
- Ignition OFF.
- Ignition ON.
- Wait 10 seconds.
- Enter the following diagnostic mode on the scan tool: Self Test - All CMDTCs.
- Is DTC U0140 or U0140:00 set in more than 1 module?
- Yes : INSTALL a new BCM. REFER to MULTIFUNCTION ELECTRONIC MODULES . TEST the system for normal operation. CLEAR the DTCs. REPEAT the ABS module self-test
- No : INSTALL a new ABS module. REFER to Anti-Lock Brake System (ABS) Module . TEST the system for normal operation.