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Home >> Lincoln >> 2014 >> MKT Base, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Information Center - Instrumentation, Message Center, And Warning Chimes >> Diagnosis And Testing >> Instrumentation, Message Center and Warning Chimes >> Pinpoint Tests >> Pinpoint Test AX: DTC U0121:00 >> Pinpoint Test Ax: DTC U0121:00

Pinpoint Test Ax: DTC U0121:00

  1. AX1 VERIFY THE CUSTOMER CONCERN 
    • Ignition ON.
    • Verify that there is an observable symptom present.

    Is an observable symptom present? 

    1. Yes  : GO to AX2  .
    2. 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. AX2 CHECK THE COMMUNICATION NETWORK 
    • Using a scan tool, perform a network test.

    Does the ABS module pass the network test? 

    1. Yes  : GO to AX3  .
    2. No  : REFER to MODULE COMMUNICATIONS NETWORK , The Anti-Lock Brake System (ABS) Module Does Not Respond To The Scan Tool.
  3. AX3 RETRIEVE THE RECORDED DTCs FROM THE ABS MODULE SELF-TEST 
    • Check for recorded DTCs from the ABS module self-test.

    Are any DTCs recorded? 

    1. Yes  : REFER to ANTI-LOCK BRAKE SYSTEM (ABS) AND STABILITY CONTROL .
    2. No  : GO to AX4  .
  4. AX4 RETRIEVE THE RECORDED DTCs FROM THE IPC SELF-TEST 
    • Using a scan tool, perform the IPC self-test.

    Is DTC U3003:16 or DTC U3003:17 recorded? 

    1. Yes  : For DTC U3003:16, GO to PINPOINT TEST BJ .

      For DTC U3003:17, GO to PINPOINT TEST BK .

    2. No  : GO to AX5  .
  5. AX5 RECHECK THE IPC DTCs 
    • Using a scan tool, clear the DTCs.
    • Wait 10 seconds.
    • Repeat the IPC self-test.

    Is DTC U0121:00 still present? 

    1. Yes  : GO to AX6  .
    2. 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. AX6 CHECK FOR DTC U0121:00 SET IN OTHER MODULES 
    • Using a scan tool, clear all DTCs.
    • Ignition OFF.
    • Ignition ON.
    • Wait 10 seconds.
    • Using a scan tool, perform self-test.
    • Retrieve the continuous memory DTCs from all modules.

    Is DTC U0121:00 set in the BCM? 

    1. Yes  : INSTALL a new ABS module. REFER to ANTI-LOCK BRAKE SYSTEM (ABS) AND STABILITY CONTROL .
    2. No  : INSTALL a new IPC. REFER to INSTRUMENT PANEL CLUSTER (IPC) .
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