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

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

AA1-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 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 or NEUTRAL.

Possible Causes
- instrument cluster