Pinpoint Test N: The Instrument Cluster Does Not Respond To The Scan Tool

WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. 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.

N1 CHECK THE INSTRUMENT CLUSTER VOLTAGE SUPPLY

Key in OFF position.
Disconnect: Instrument Cluster C220
Key in ON position.

Fig 1: Checking Circuit For Voltage

Courtesy of FORD MOTOR CO.

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

Connector-Pin	Circuit
C220-28	1002 (BK/PK)
C220-21	956 (OG/LG)
C220-29	3049 (BK/LG)

Are the voltages greater than 10 volts?

YES : Go to N2.
NO : VERIFY the SJB fuses 7 (10A), 22 (10A), or 28 (10A) are OK. If OK, REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.

N2 CHECK THE INSTRUMENT CLUSTER GROUND CIRCUITS 57 (BK) AND 570 (BK/WH) FOR AN OPEN

Key in OFF position.

Fig 2: Checking Circuits For Open

Courtesy of FORD MOTOR CO.

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

Connector-Pin	Circuit
C220-25	57 (BK)
C220-31	570 (BK/WH)

Are the resistances less than 5 ohms?

YES : Go to N3.
NO : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.

N3 CHECK THE HS-CAN CIRCUITS BETWEEN THE INSTRUMENT CLUSTER AND THE DATA LINK CONNECTOR (DLC) FOR AN OPEN
- Measure the resistance between the instrument cluster C220-12, circuit 1908 (WH), harness side and the DLC C251-6, circuit 1908 (WH), harness side; and between the instrument cluster C220-13, circuit 1909 (BK), harness side and the DLC C251-14, circuit 1909 (BK), harness side.
- Are the resistances less than 5 ohms?
1. YES : Go to N4.
2. NO : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
N4 CHECK THE MS-CAN CIRCUITS BETWEEN THE INSTRUMENT CLUSTER AND THE DLC FOR AN OPEN
- Measure the resistance between the instrument cluster C220-14, circuit 1847 (WH/OG), harness side and the DLC C251-3, circuit 1847 (WH/OG), harness side; and between the instrument cluster C220-15, circuit 1848 (PK/OG), harness side and the DLC C251-11, circuit 1848 (PK/OG), harness side.
- Are the resistances less than 5 ohms?
1. YES : Go to N5.
2. NO : REPAIR the circuit in question. CLEAR the DTCs. REPEAT the network test with the scan tool.
N5 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 article. CLEAR the DTCs. REPEAT the network test with the scan tool.
2. NO : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the network test with the scan tool.