Pinpoint Test AF: The Instrument Cluster (Ic) Is Inoperative
WARNING: This page is about a different car, the 2008 Mercury Mariner and 2008 Ford Escape. 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.
- AF1 CHECK THE INSTRUMENT CLUSTER (IC) VOLTAGE SUPPLY
- Key in OFF position.
- Disconnect: Instrument Cluster (IC) C220
- Key in ON position.
- Measure the voltage between the instrument cluster (IC), harness side and ground as follows:
Connector-Pin Circuit C220-19 SBP26 (YE/RD) C220-20 CBP29 (WH/VT) - Are the voltages greater than 10 volts?
- YES : Go to AF2.
- NO : VERIFY the SJB fuses 26 (10A) and 29 (5A) are OK. If OK, REPAIR the circuit in question. TEST the system for normal operation.
- AF2 CHECK THE INSTRUMENT CLUSTER (IC) GROUND CIRCUIT GD112 (BK/GN) FOR AN OPEN
- Key in OFF position.
- Measure the resistance between the instrument cluster (IC) C220-9, circuit GD112 (BK/GN), harness side and ground.
- Is the resistance less than 5 ohms?
- YES : Go to AF3.
- NO : REPAIR the circuit. TEST the system for normal operation.
- AF3 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 determine if the concern is still present.
- Is the concern still present?
- YES : INSTALL a new instrument cluster (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.