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Home >> Mercury >> 2009 >> Mariner Base, 2.5 7, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 33 (Information Center - Instrument Cluster (Ic), Message Center, & Warning Chimes) >> Diagnostic Tests >> Instrument Cluster (IC), Message Center and Warning Chimes >> Pinpoint Tests >> Pinpoint Test A: The Instrument Cluster (IC) Is Inoperative >> Pinpoint Test A: The Instrument Cluster (Ic) Is Inoperative

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

WARNING: This page is about a different car, the 2009 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.
  1. A1 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
      GF0046508Courtesy of FORD MOTOR CO.
    • Measure the voltage between the instrument cluster (IC), harness side and ground as follows:
      Instrument Cluster (IC) Connector-Pin Circuit
      C220-3 1001 (LG/RD)
      C220-25 1266 (RD/YE)
      C220-26 489 (PK/BK)
    • Are the voltages greater than 10 volts? 
    1. YES  : Go to  A2.
    2. NO  : VERIFY the SJB fuses 8 (10A), 16 (5A), and 19 (5A) are OK. If OK, REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.
  2. A2 CHECK CIRCUIT 1205 (BK) FOR AN OPEN 
    • Key in OFF position.
      • Fig 2: Measuring Resistance Between Instrument Cluster C220-2 And Ground
      GF0016058Courtesy of FORD MOTOR CO.
    • Measure the resistance between the instrument cluster (IC) C220-2, circuit 1205 (BK) harness side and ground.
    • Is the resistance less than 5 ohms? 
    1. YES  : Go to  A3.
    2. NO  : REPAIR the circuit. TEST the system for normal operation.
  3. A3 CHECK FOR CORRECT INSTRUMENT CLUSTER (IC) OPERATION 
    • Disconnect the instrument cluster (IC) connector.
    • Check for:
      • corrosion
      • damaged pins
      • pushed-out pins
    • Connect the instrument cluster (IC) connector and make sure it seats 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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