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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 A: The Instrument Cluster (IC) Is Inoperative >> Pinpoint Test A: The Ic Is Inoperative

Pinpoint Test A: The Ic Is Inoperative

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.
NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to BATTERY, MOUNTING AND CABLES .
  1. A1 RETRIEVE THE RECORDED DTCs FROM THE IC SELF-TEST 
    • Check for recorded IC  DTCs from the self-test.
    • Is DTC U2472 recorded? 
  2. A2 CHECK THE IC HOT AT ALL TIMES VOLTAGE SUPPLY 
    • Ignition OFF.
    • Disconnect: IC  C220.
    • Measure the voltage between the IC  C220-13, circuit SBP26 (YE/RD), harness side and ground.
      Fig 1: Checking Circuit SBP26 For An Open Or For High Resistance
      G06143902Courtesy of FORD MOTOR CO.
    • Is the voltage greater than 10 volts? 
    • Yes:  GO to A3  .
    • No:  VERIFY the SJB  fuse 26 (10A) is OK. If OK, REPAIR circuit SBP26 (YE/RD) for an open. If not OK, REFER to the appropriate SYSTEM WIRING DIAGRAMS article to identify the possible causes of the circuit short. TEST the system for normal operation.
  3. A3 CHECK THE IC GROUND CIRCUIT FOR AN OPEN 
    • Ignition OFF.
    • Disconnect: Negative Battery Cable.
    • Measure the resistance between the IC  C220-8, circuit GD133 (BK), harness side and ground.
      Fig 2: Checking Circuit GD133 For An Open Or For High Resistance
      G06143956Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms? 
    • Yes:  GO to A4  .
    • No:  REPAIR circuit GD133 (BK) for an open. TEST the system for normal operation.
  4. A4 CHECK FOR CORRECT IC OPERATION 
    • Disconnect the IC  connector.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect the IC  connector and make sure it seats correctly.
    • Operate the system and determine if the concern is still present.
    • Is the concern still present? 
    • Yes:  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 concern may have been caused by a loose or corroded connector.
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