Pinpoint Test A: DTC U0100:87

WARNING: This page is about a different car, the 2014 Lincoln MKX and 2014 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

A1 VERIFY THE SCAN TOOL CAN COMMUNICATE WITH THE PCM
- Connect the scan tool.
- Check that a vehicle session can be established using the scan tool.
Can a vehicle session be established?
- Yes : GO to A2.
- No : REFER to MODULE COMMUNICATIONS NETWORK , The PCM Does Not Respond To The Scan Tool.
A2 CHECK THE BCM CONTINUOUS MEMORY DTCs
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: BCM Self-Test.
- Clear the DTCs. Repeat the BCM self-test.
Is DTC U0100:87 retrieved again?
- Yes : GO to A3.
- 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.
A3 RETRIEVE THE RECORDED DTCs FROM THE BCM SELF-TEST
- Check for recorded BCM DTCs from the self-test.
Is DTC U3003:16 or DTC U3003:17 recorded?
- Yes : For DTC U3003:16, GO to PINPOINT TEST G .
  For DTC U3003:17, GO to PINPOINT TEST H .
- No : GO to A4.
A4 CHECK FOR DTC U0100:87 OR DTC U0100 SET IN OTHER MODULES
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Self-Test.
- Retrieve the continuous memory DTCs from all modules.
Is DTC U0100:87 or DTC U0100 set in any other module?
- Yes : INSTALL a new PCM. REFER to ELECTRONIC ENGINE CONTROLS . TEST the system for normal operation.
- No : INSTALL a new BCM . REFER to Body Control Module (BCM) . TEST the system for normal operation