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Home >> Ford >> 2008 >> Expedition RWD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Cluster (Ic), Message Center, And Warning Chimes >> Diagnostic Tests >> Instrumentation, Message Center and Warning Chimes >> Pinpoint Tests >> Pinpoint Test AG: The Instrument Cluster (IC) Is Inoperative >> Pinpoint Test Ag: The Instrument Cluster (Ic) Is Inoperative

Pinpoint Test Ag: The Instrument Cluster (Ic) Is Inoperative

NOTE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. AG1 CARRY OUT THE NETWORK TEST 
    NOTE: If the medium speed controller area network (MS-CAN) is damaged or disconnected, the instrument cluster (IC) may appear inoperative, the vehicle may not start and the theft indicator may appear to be functioning correctly.
    • Key in ON position.
    • Enter the following diagnostic mode on the diagnostic tool: Network Test
    • Carry out the vehicle network test.
    • Do all modules communicate on the MS-CAN network? 
    1. YES  : Go to  AG2.
    2. NO  : REFER to MODULE COMMUNICATIONS NETWORK article to diagnose the communication network.
  2. AG2 CHECK THE INSTRUMENT CLUSTER (IC) VOLTAGE SUPPLY 
    • Key in OFF position.
    • Disconnect: Instrument Cluster (IC) C220
    • Key in ON position.
      • Fig 1: Checking Instrument Cluster (IC) Voltage Supply
      GF0023354Courtesy of FORD MOTOR CO.
    • Measure the voltage between the instrument cluster (IC) C220-1, circuit SBP26 (YE/RD), harness side and ground; and between the instrument cluster (IC) C220-14, circuit CBP29 (WH/VT), harness side and ground.
    • Are the voltages greater than 10 volts? 
    1. YES  : Go to  AG3.
    2. NO  : VERIFY SJB fuse 26 (10A) and fuse 29 (5A) are OK. If OK, REPAIR the circuit in question. TEST the system for normal operation.
  3. AG3 CHECK CIRCUIT GD133 (BK) FOR AN OPEN 
    • Key in OFF position.
      • Fig 2: Checking Circuit GD133 (BK) For An Open
      GF0023355Courtesy of FORD MOTOR CO.
    • Measure the resistance between the instrument cluster (IC) C220-6, circuit GD133 (BK), harness side and ground.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  AG4.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  4. AG4 CHECK FOR CORRECT INSTRUMENT CLUSTER (IC) OPERATION 
    • Disconnect all the instrument cluster (IC) connectors.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect all the instrument cluster (IC) connectors and make sure they seat correctly.
    • Operate the system and verify the concern is still present.
    • Is the concern still present? 
    1. YES  : INSTALL a new instrument cluster (IC). REFER to Instrument Cluster (IC) . TEST the system for normal operation.
    2. 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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