Pinpoint Test E: The Instrument Cluster Does Not Respond To The Diagnostic Tool

WARNING: This page is about a different car, the 2006 Mercury Montego, 2006 Ford Freestyle, and 2006 Ford Five Hundred. 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.

E1 CHECK THE INSTRUMENT CLUSTER C220 FOR DAMAGE
- Key in OFF position.
- Depower the air bag system. Refer to DEPOWERING PROCEDURE .
- Disconnect: Instrument Cluster C220.
- Inspect the instrument cluster C220 for damage.
- Is the instrument cluster C220 OK?
Yes: GO to E2.

No: REPAIR the instrument cluster C220 as necessary. CONNECT the instrument cluster C220. REPOWER the air bag system. REFER to REPOWERING PROCEDURE . CARRY OUT the data link diagnostics test.

E2 CHECK THE HIGH SPEED CAN CIRCUITS BETWEEN THE DLC AND THE INSTRUMENT CLUSTER FOR AN OPEN
- Measure the resistance between the instrument cluster C220-18, circuit 1908 (WH), harness side and the DLC C251-6, circuit 1908 (WH), harness side; and between the instrument cluster C220-19, circuit 1909 (BK), harness side and the DLC C251-14, circuit 1909 (BK), harness side.
  
  Fig 1: Checking High Speed CAN Circuits Between DLC & Instrument Cluster
  Courtesy of FORD MOTOR CO.
- Are the resistances less than 5 ohms?
Yes: GO to E3.

No : REPAIR the circuit in question. CONNECT the instrument cluster C220. REPOWER the air bag system. REFER to REPOWERING PROCEDURE . CLEAR the DTCs. REPEAT the self-test. CARRY OUT the data link diagnostics test.

E3 CHECK THE MEDIUM SPEED CAN CIRCUITS BETWEEN THE DLC AND THE INSTRUMENT CLUSTER FOR AN OPEN
- Measure the resistance between the instrument cluster C220-20, circuit 2180 (WH/BK), harness side and the DLC C251-3, circuit 2180 (WH/BK), harness side; and between the instrument cluster C220-21, circuit 2181 (BK/YE), harness side and the DLC C251-11, circuit 2181 (BK/YE), harness side.
  
  Fig 2: Checking Medium Speed CAN Circuits Between DLC & Instrument Cluster
  Courtesy of FORD MOTOR CO.
- Are the resistances less than 5 ohms?
Yes: GO to E4.

No: REPAIR the circuit in question. CONNECT the instrument cluster C220. REPOWER the air bag system. REFER to REPOWERING PROCEDURE . CLEAR the DTCs. REPEAT the self-test. CARRY OUT the data link diagnostics test.

E4 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION
- Disconnect all the instrument cluster connectors.
- Check for:
  - corrosion
  - pushed-out pins
- Connect all the instrument cluster connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
Yes: INSTALL a new instrument cluster. REFER to REMOVAL AND INSTALLATION . REPOWER the air bag system. REFER to REPOWERING PROCEDURE . CLEAR the DTCs. REPEAT the self-test. CARRY OUT the data link diagnostics test.

No: The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector. REPOWER the air bag system. REFER to REPOWERING PROCEDURE . CLEAR the DTCs. REPEAT the self-test. CARRY OUT the data link diagnostics test.