Tests AA: The Shift Indicator Is Never/Always On (GT 500 Only)

PINPOINT TEST AA: THE SHIFT INDICATOR IS NEVER/ALWAYS ON (GT 500 ONLY)

AA1-AA2:

AA3-AA4:

Normal Operation
The shift indicator is used to inform the driver of shift points that provide the highest fuel economy. The shift indicator is controlled by the instrument cluster based upon a shift message sent from the powertrain control module (PCM) over the high speed controller area network (CAN) communication bus lines.

Possible Causes
- PCM
- Instrument cluster