Pinpoint Test Ab: The Instrument Cluster Is Inoperative

WARNING: This page is about a different car, the 2006 Mercury Grand Marquis and 2006 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: Use the correct probe adaptor(s) when making measurements. Failure to use the correct probe adaptor(s) may damage the connector.

AB1 CHECK THE INSTRUMENT CLUSTER VOLTAGE SUPPLY

Key in OFF position.
Disconnect: Instrument Cluster C2220.
Key in ON position.

Measure the voltage between the instrument cluster, harness side and ground as follows:

SPECIAL TOOL DESCRIPTION

Instrument Cluster Connector-Pin	Circuit
C2220-1	54 (LG/YE)
C2220-17	1003 (GY/YE)
C2220-19	640 (RD/YE)

Are the voltages greater than 10 volts?

Yes : GO to AB2.

No : VERIFY the CJB fuses 1 (15A), 6 (10A) and 26 (10A) are OK. If OK, REPAIR the circuit in question. TEST the system for normal operation.

AB2 CHECK INSTRUMENT CLUSTER GROUND CIRCUITS

Key in OFF position.

Measure the resistance between the instrument cluster, harness side and ground as follows:

CONNECTOR TERMINALS RESISTANCE DESCRIPTION

Instrument Cluster Connector-Pin	Circuit
C2220-2	676 (PK/OG)
C2220-18	57 (BK)

Are the resistances less than 5 ohms?

Yes : GO to AB3.

No : REPAIR the circuit in question. TEST the system for normal operation.

AB3 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION
- Disconnect the instrument cluster connector.
- Check for:
  - corrosion
  - pushed-out pins
- Connect the instrument cluster connector and make sure it seats correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
Yes : INSTALL a new instrument cluster. REFER to INSTRUMENT CLUSTER . 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.