Pinpoint Test H: The Speedometer/Odometer Is Inoperative

WARNING: This page is about a different car, the 2005 Ford RV Cutaway, 2005 Ford Econoline, and 2005 Ford E450 Super Duty. However, it is still accessible from the selected car via links, so may be relevant.

H1 CHECK THE SPEEDOMETER SIGNAL USING THE DIAGNOSTIC TOOL AT 48 KM/H (30 MPH)
NOTE: The vehicle must be traveling at a steady speed while carrying out this test.

NOTE: Only carry out Test Step H1 if speed limits do not allow Test Step H2 to be carried out.
- Key in ON position.
- Enter the following diagnostic mode on the diagnostic tool: Powertrain control module (PCM) PIDs.
- Monitor the VSS PID (diesel), or OSS PID (gasoline), while driving the vehicle at 48 km/h (30 mph).
- Does the diagnostic tool read 45 - 57 km/h (28 - 35 mph)?
- Yes : GO to H2.
- No : See INTRODUCTION - GASOLINE article to continue diagnosis.
H2 CHECK THE SPEEDOMETER SIGNAL USING THE DIAGNOSTIC TOOL AT 97 KM/H (60 MPH)
NOTE: The vehicle must be traveling at a steady speed while carrying out this test.
- Monitor the VSS PID (diesel), or OSS PID (gasoline), while driving the vehicle at 97 km/h (60 mph).
- Does the diagnostic tool read 94 - 100 km/h (58 - 62 mph)?
- Yes : GO to H3.
- No : See INTRODUCTION - GASOLINE article to continue diagnosis.
H3 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 INSTRUMENT CLUSTER . 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. TEST the system for normal operation.