LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2000 >> Contour SE, 2.5 L, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 493 (Instrument Cluster System) >> Diagnosis And Testing >> Instrument Cluster >> Pinpoint Tests >> Pinpoint Test E: The Speedometer/Odometer Is Inoperative

Pinpoint Test E: The Speedometer/Odometer Is Inoperative

WARNING: This page is about a different car, the 2004 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.

Test Step 

  1. E1 CARRY OUT THE INSTRUMENT CLUSTER GAUGES ACTIVE COMMAND USING THE DIAGNOSTIC TOOL 
    • Key in ON position.
    • Enter the following diagnostic mode on the diagnostic tool: Instrument Cluster Active Command.
    • Select the instrument cluster gauges active command. Trigger, monitor, and sweep the gauges. Observe the speedometer gauge.
    • Does the speedometer gauge sweep correctly? 

    Result/Action to Take 

    1. Yes  : GO to E2.
    2. No  : GO to  E3.
  2. E2 CHECK CIRCUIT 679 (GY/BK) FOR AN OPEN OR SHORT TO GROUND 
    • Key in OFF position.
    • Disconnect: Instrument Cluster C220a.
    • Disconnect: Powertrain Control Module (PCM) C175.
    • Measure the resistance between the instrument cluster C220a pin 5, circuit 679 (GY/BK), harness side and the PCM C175 pin 68, circuit 679 (GY/BK), harness side; and between the instrument cluster C220a pin 5, circuit 679 (GY/BK), harness side and ground.
      Fig 1: Checking Circuit 679 (GY/BK) For Open Or Short To Ground
      G03277038Courtesy of FORD MOTOR CO.
    • Is the resistance less than 5 ohms between the instrument cluster and the PCM; and greater than 10,000 ohms between the instrument cluster and ground? 
    1. Yes  : GO to  E4.
    2. No  : REPAIR the circuit. TEST the system for normal operation.
  3. E3 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? 
    1. Yes  : INSTALL a new instrument cluster. REFER to INSTRUMENT CLUSTER . 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. CLEAR the DTCs. TEST the system for normal operation.
  4. E4 CHECK FOR CORRECT PCM OPERATION 
    • Disconnect the PCM connector.
    • Check for:
    • Corrosion
    • Pushed-out pins
    • Connect the PCM 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 PCM. REFER to ELECTRONIC ENGINE CONTROLS . 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. CLEAR the DTCs. TEST the system for normal operation.
scientia non olet · About LEMON Manuals