Pinpoint Test Ab: The Engine Idle Hour Meter Is Inoperative (If Equipped)

WARNING: This page is about a different car, the 2009 Mercury Grand Marquis and 2009 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.

AB1 CHECK THE TACHOMETER OPERATION
- Start the engine and verify the tachometer operates correctly.
- Does the tachometer operate correctly?
1. YES : Go to AB2.
2. NO : Go to Pinpoint Test D .
AB2 RETRIEVE THE RECORDED 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?
1. YES : REFER to AUTOMATIC TRANSAXLE/TRANSMISSION - 4R70E/4R75E article to continue diagnosis of the digital transmission range (TR) sensor.
2. NO : Go to AB3.
AB3 CHECK FOR CORRECT INSTRUMENT CLUSTER (IC) OPERATION
- Disconnect the instrument cluster (IC) connector.
- Check for:
  - corrosion
  - damaged pins
  - pushed-out pins
- Connect the instrument cluster (IC) 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 instrument cluster (IC). REFER to Instrument Cluster (IC) . 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.