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

Test Step 

L1 CHECK THE INSTRUMENT CLUSTER C220b FOR DAMAGE 

• Key in OFF position.
• Disconnect: Instrument Cluster C220b.
• Inspect the instrument cluster C220b for damage; repair as necessary.
• Is the instrument cluster C220b OK? 

Result / Action to Take 

Yes 

GO to L2.

No 

REPAIR the instrument cluster C220b as necessary. CARRY OUT the diagnostic tool data link test.

Test Step 

L2 CHECK CIRCUITS 914 (TN/OG) AND 915 (PK/LB) FOR AN OPEN BETWEEN THE DLC C251 AND THE INSTRUMENT CLUSTER C220b 

• Measure the resistance between the instrument cluster C220b pin 18, circuit 914 (TN/OG), harness side and the C251 pin 2, circuit 914 (TN/OG), harness side.
  Fig 1: Checking Circuits 914 (TN/OG) For An Open Between DLC C251 And Instrument Cluster C220b

  Courtesy of FORD MOTOR CO.
• Measure the resistance between the instrument cluster C220b pin 17, circuit 915 (PK/LB), harness side and the C251 pin 10, circuit 915 (PK/LB), harness side.
  Fig 2: Checking Circuits 915 (PK/LB) For An Open Between DLC C251 And Instrument Cluster C220b

  Courtesy of FORD MOTOR CO.
• Are the resistances less than 5 ohms? 

Result / Action to Take 

Yes 

GO to L3.

No 

REPAIR the circuit in question between the instrument cluster C220b and the DLC C251. CARRY OUT the diagnostic tool data link test.

Test Step 

L3 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION 

• Disconnect all instrument cluster connectors.
• Check for:
  • corrosion
  • pushed-out pins
• Connect all instrument cluster connectors and make sure they seat correctly.
• Operate the system and verify the concern is still present.
• Is the concern still present? 

Result / Action to Take 

Yes 

INSTALL a new instrument cluster. REFER to INSTRUMENT CLUSTER . CARRY OUT the diagnostic tool data link test.

No 

The system is operating correctly at this time. Concern may have been caused by a loose or corroded connector. CLEAR the DTCs. REPEAT the selftest.