Pinpoint Test Ac: The Instrument Cluster Is Inoperative

WARNING: This page is about a different car, the 2007 Lincoln MKX and 2007 Ford Edge. 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.

AC1 CHECK THE INSTRUMENT CLUSTER VOLTAGE SUPPLY
- Key in OFF position.
- Disconnect: Instrument Cluster C220
- Key in ON position.
- Measure the voltage between the instrument cluster C220-19, circuit SBP26 (YE/RD), harness side and ground; and between the instrument cluster C220-20, circuit CBP29 (WH/VT), harness side and ground.
- Are the voltages greater than 10 volts?
1. YES : Go to AC2.
2. NO : VERIFY the SJB fuses 26 (10A) and 29 (5A) are OK. If OK, REPAIR the circuit in question. CLEAR the DTCs. REPEAT the self-test.
AC2 CHECK THE INSTRUMENT CLUSTER GROUND CIRCUITS
- Key in OFF position.
- Measure the resistance between the instrument cluster C220-9, circuit GD115 (BK/GY), harness side and ground; and between the instrument cluster C220-10, circuit GD115 (BK/GY), harness side and ground.
- Are the resistances less than 5 ohms?
1. YES : Go to AC3.
2. NO : REPAIR the circuit in question. TEST the system for normal operation.
AC3 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION
- Disconnect the instrument cluster connector.
- Check for:
  - corrosion
  - damaged pins
  - 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?
1. YES : INSTALL a new instrument cluster. 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.