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Home >> Ford >> 2003 >> Cutaway 7.3 F >> Repair and Diagnosis >> External Pages >> Different car >> Section 2500 (Information Center - Instrumentation, Message Center And Warning Chimes -- F250-F550 Super Duty) >> Diagnosis And Testing >> Instrumentation, Message Center and Warning Chimes >> Pinpoint Tests >> Pinpoint Test BK: DTC U0166 >> Pinpoint Test Bk: DTC U0166

Pinpoint Test Bk: DTC U0166

WARNING: This page is about a different car, the 2010 Ford Pickup, 2010 Ford F550 Super Duty, 2010 Ford F450 Super Duty, and 2010 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
  1. BK1 VERIFY THE CUSTOMER CONCERN 
    • Ignition ON.
    • Verify that there is an observable symptom present.
    • Is an observable symptom present? 
    • Yes:  GO to BK2  .
    • 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. BK2 CHECK THE COMMUNICATION NETWORK 
    • Enter the following diagnostic mode on the scan tool: Network Test.
    • Carry out the network test.
    • Does the ACM pass the network test? 
  3. BK3 RETRIEVE THE RECORDED DTCs FROM THE IC SELF-TEST 
    • Check for recorded IC  DTCs from the self-test.
    • Is DTC B1317 or DTC B1318 recorded? 
  4. BK4 RECHECK THE IC 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. Repeat the IC  self-test.
    • Is DTC U0166 still present? 
    • Yes:  INSTALL a new AHCM  . REFER to CLIMATE CONTROL . CLEAR the DTCs. REPEAT the IC  self-test.

      If DTC U0166 is still present, INSTALL a new IC  . REFER to INSTRUMENT CLUSTER (IC) . TEST the system for normal operation.

    • 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.