Pinpoint Test Aa: DTC U0140:00

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.

AA1 VERIFY THE CUSTOMER CONCERN
- Ignition ON.
- Verify there is an observable symptom present.
- Is an observable symptom present?
  - Yes : GO to AA2.
  - 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.
AA2 CHECK THE COMMUNICATION NETWORK
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Network Test.
- Carry out the network test.
- Does the BCM pass the network test?
  - Yes : GO to AA3.
  - No : REFER to MODULE COMMUNICATIONS NETWORK .
AA3 RETRIEVE THE RECORDED DTCs FROM THE BCM SELF-TEST
- Check for recorded DTCs from the BCM self-test.
- Is DTC U3003:16 or DTC U3003:17 recorded?
  - Yes : MULTIFUNCTION ELECTRONIC MODULES .
  - No : GO to AA4.
AA4 RETRIEVE THE RECORDED DTCs FROM THE HVAC MODULE SELF-TEST
- Check for recorded DTCs from the HVAC module self-test.
- Is DTC U3003:16 or DTC U3003:17 recorded?
  - Yes : GO to PINPOINT TEST H .
  - No : GO to AA5.
AA5 RECHECK THE HVAC MODULE DTCs
NOTE: If new modules were installed prior to the DTC being set, the module configuration may be incorrectly set during the Programmable Module Installation (PMI) or the PMI may not have been carried out.
- Clear the DTCs.
- Wait 10 seconds.
- Repeat the HVAC module self-test.
- Is DTC U0140:00 still present?
  - Yes : GO to AA6.
  - 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.
AA6 CHECK FOR DTC U0140:00 SET IN OTHER MODULES
- Clear all DTCs.
- Ignition OFF.
- Ignition ON.
- Wait 10 seconds.
- Enter the following diagnostic mode on the scan tool: Self-Test.
- Retrieve the continuous memory DTCs from all modules.
- Is DTC U0140:00 set in the Driver Seat Module (DSM)?
  - Yes : INSTALL a new BCM. REFER to MULTIFUNCTION ELECTRONIC MODULES . CLEAR the DTCs. REPEAT the self-test.
  - No : INSTALL a new HVAC module. REFER to CLIMATE CONTROL . TEST the system for normal operation.