Pinpoint Test C: DTC U0155:87

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.

C1 VERIFY CUSTOMER CONCERN
- Ignition ON.
- Verify that there is an observable symptom present.
- Is an observable symptom present?
  - Yes : GO to C2.
  - 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.
C2 CHECK THE COMMUNICATION NETWORK
- Ignition ON.
- Enter the following diagnostic mode on the scan tool: Network Test.
- Carry out the network test.
- Does the IPC pass the network test?
  - Yes : GO to C3.
  - No : REFER to MODULE COMMUNICATIONS NETWORK , The IPC Does Not Respond To The Scan Tool.
C3 CHECK THE IPC FOR DTCs
- Check for recorded IPC DTCs from the self-test.
- Are any DTCs recorded?
  - Yes : REFER to INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES .
  - No : GO to C4.
C4 RECHECK THE PAM DTCs
- Clear the DTCs.
- Wait 10 seconds.
- Repeat the PAM self-test.
- Is DTC U0155:87 still present?
  - Yes : GO to C5.
  - No : The system is operating correctly at this time. The DTC may have been set due to high network traffic or intermittent fault condition.
C5 CHECK FOR DTC U0155 OR U0155:00 SET IN OTHER MODULES
- Ignition ON.
- Retrieve the continuous memory DTCs from all modules.
- Is DTC U0155 or U0155:00 set in the ACM or the ABS module?
  - Yes : INSTALL a new IPC. REFER to INSTRUMENTATION, MESSAGE CENTER, AND WARNING CHIMES . CLEAR the DTCs. REPEAT the self-test.
  - No : INSTALL a new PAM. REFER to Parking Aid Module (PAM) . TEST the system for normal operation.