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Home >> Ford >> 2012 >> Mustang Base, 2D Coupe, Automatic Trans >> Repair and Diagnosis >> External Pages >> Different car >> Section 48 (Four Wheel Drive (4WD) Systems -- F250-F550 Super Duty) >> Diagnosis And Testing >> Electronic Locking Differential (ELD) System >> Pinpoint Tests >> Pinpoint Test U: DTC U0155:00 >> Pinpoint Test U: DTC U0155:00

Pinpoint Test U: DTC U0155:00

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  1. U1 VERIFY THE CUSTOMER CONCERN 
    • Ignition ON.
    • Verify there is an observable symptom present.
    • Is an observable symptom present? 
    • Yes  : GO to U2.
    • 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.
  2. U2 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? 
  3. U3 RETRIEVE THE RECORDED DTCs FROM THE IPC SELF-TEST 
    • Check for recorded DTCs from the IPC self-test.
    • Is DTC U3003:16 or DTC U3003:17 recorded? 
  4. U4 RETRIEVE THE RECORDED DTCs FROM THE TCCM SELF-TEST 
    • Check for recorded DTCs from the TCCM self-test.
    • Is DTC P0562:00 or DTC P0563:00 recorded? 
  5. U5 RECHECK THE TCCM DTCs 
    • Clear the DTCs.
    • Wait 10 seconds.
    • Repeat the TCCM self-test.
    • Is DTC U0155:00 still present? 
    • Yes  : GO to U6.
    • 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.
  6. U6 CHECK FOR DTC U0155:00 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 U0155:00 set in the Body Control Module (BCM), Restraints Control Module (RCM), or Driver Door Module (DDM)? 
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