Test Z: The Door Ajar Warning Indicator Is Never/Always On

PINPOINT TEST Z: THE DOOR AJAR WARNING INDICATOR IS NEVER/ALWAYS ON

Z1-Z6:

Normal Operation
The instrument cluster receives the door ajar status for the LH front door, RH front door, LH rear door, RH rear door, decklid/liftgate and liftgate glass switch status from the smart junction box (SJB) over the medium speed controller area network (MS-CAN) communication bus. When the instrument cluster receives a message from the SJB that one or more doors are open or ajar, the instrument cluster turns on the door ajar reconfigurable telltale indicator. If the door ajar status message is missing for more than 5 seconds, the instrument cluster sets DTC U0140 in continuous memory and defaults the door ajar reconfigurable telltale indicator on.

NOTE: If DTC U0140 is set in the instrument cluster, other observable symptoms may also be present such as tire pressure monitoring system (TPMS) warning indicator, backlighting and door ajar indication.

Possible Causes
- Interior lamps
- SJB
- Instrument cluster