Pinpoint Test Aa: The Engine Idle Hour Meter Is Inoperative (If Equipped)
WARNING: This page is about a different car, the 2006 Mercury Grand Marquis and 2006 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
- AA1 CHECK THE TACHOMETER OPERATION
- Start the engine and verify the tachometer operates correctly.
- Does the tachometer operate correctly?
Yes : GO to AA2.
No : GO to PINPOINT TEST D to continue diagnosis of the tachometer.
- AA2 RETRIEVE THE RECORDED DIAGNOSTIC TROUBLE CODES (DTCs) FROM BOTH THE CONTINUOUS AND ON-DEMAND PCM SELF-TESTS
- Check for recorded PCM DTCs from the continuous and on-demand self-tests.
- Are any PCM DTCs recorded?
Yes : REFER to the INTRODUCTION - GASOLINE article to continue diagnosis of the digital transmission range (TR) sensor.
No : GO to AA3.
- AA3 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 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.