Pinpoint Test D: The Speedometer/Odometer Is Inoperative
- D1 CARRY OUT THE SPEEDOMETER ACTIVE COMMAND USING THE DIAGNOSTIC TOOL
- Key in ON position.
- Enter the following diagnostic mode on the scan tool: Instrument Cluster Active Command.
- Select the instrument cluster speedometer active command. Trigger the speedometer and scroll in increments of 10% while monitoring the speedometer. The speed indicated should increase in increments of approximately 20 km/h (12 mph) for each 10% change.
- Does the speed indicated increase within specifications?
Yes : GO to D2.
No : GO to D3.
- D2 MONITOR THE VEHICLE SPEED SENSOR (VSS) PID
- Enter the following diagnostic mode on the scan tool: Vehicle Speed PID.
- Monitor the vehicle speed PID while driving the vehicle.
- Does the PCM vehicle speed PID (Escape, Mariner) or TCM vehicle speed PID (Escape Hybrid) match the speedometer reading on the instrument cluster?
Yes : GO to D3.
No : GO to D4 (Escape, Mariner).
GO to D5 (Escape Hybrid).
- D3 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION
- Disconnect the instrument cluster connector.
- Check for:
- corrosion
- pushed-out pins
- Connect the instrument cluster connector and make sure it seats correctly.
- Operate the system and determine if the concern is still present.
- Is the concern still present?
Yes : INSTALL a new instrument cluster. REFER to INSTRUMENT CLUSTER in this article. TEST the system for normal operation.
No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
- D4 CHECK FOR CORRECT PCM OPERATION
- Disconnect all the PCM connectors.
- Check for:
- corrosion
- pushed-out pins
- Connect the PCM connectors and make sure they seat correctly.
- Operate the system and determine if the concern is still present.
- Is the concern still present?
Yes : INSTALL a new PCM. REFER to ELECTRONIC ENGINE CONTROLS - 2.3L (2.3L) or ELECTRONIC ENGINE CONTROLS - 3.0L (4V) (3.0L). TEST the system for normal operation.
No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
- D5 CHECK FOR CORRECT TCM OPERATION
- Disconnect all the TCM connectors.
- Check for:
- corrosion
- pushed-out pins
- Connect the TCM connectors and make sure they seat correctly.
- Operate the system and determine if the concern is still present.
- Is the concern still present?
Yes : INSTALL a new TCM. REFER to AUTOMATIC TRANSAXLE/TRANSMISSION - ELECTRONICALLY CONTROLLED CONTINUOUSLY VARIABLE TRANSMISSION (ECVT) . Test the system for normal operation.
No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.