Tests AA: The Engine Idle Hour Meter Is Inoperative (If Equipped)

PINPOINT TEST AA: THE ENGINE IDLE HOUR METER IS INOPERATIVE (IF EQUIPPED)

AA1:

AA2-AA3:

Normal Operation
The instrument cluster receives the digital transmission range (TR) sensor status message from the powertrain control module (PCM) over the high speed controller area network (HS-CAN), and if the engine speed is greater than 400 rpm, it records the amount of time the engine runs with the transmission in PARK (P) or NEUTRAL (N).

Possible Causes
- Instrument cluster