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

Instrumentation, Message Center and Warning Chimes

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

Normal Operation

The Instrument Panel Cluster (IPC) receives the door ajar status for the LH and RH front door from the Smart Junction Box (SJB) over the Medium Speed Controller Area Network (MS-CAN) communication bus. When the IPC (Instrument Panel Cluster) receives a message from the SJB (Smart Junction Box) that one or more doors are open or ajar, the IPC (Instrument Panel Cluster) turns on the door ajar warning indicator.

If the door ajar status message is missing for less than 5 seconds, the door ajar warning indicator remains in the last indication mode (on or off) based upon the last known good message received.

If the door ajar status message is missing for more than 5 seconds, the IPC (Instrument Panel Cluster) sets DTC U0140:87 and defaults the door ajar warning indicator on.

NOTE: If DTC U0140:87 is set in the SJB (Smart Junction Box) , other symptoms can also be present in the IPC (Instrument Panel Cluster) such as high beam indicator, RH/LH turn indicators, instrument panel backlighting and Tire Pressure Monitoring System (TPMS).

This pinpoint test is intended to diagnose the following:

- Interior lighting concern

- SJB (Smart Junction Box)

- IPC (Instrument Panel Cluster)

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

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

T1 CHECK THE INTERIOR LIGHTING OPERATION

- Open and close each door while monitoring the courtesy lamps.

Do the courtesy lamps operate correctly with each door?

Yes
GO to T2.

No
REFER to Lighting and Horns.

T2 RETRIEVE THE RECORDED DTCs FROM THE CONTINUOUS IPC (Instrument Panel Cluster) SELF-TEST

- Check for recorded IPC (Instrument Panel Cluster) DTCs from the continuous self-test.

Is DTC U0140:87 recorded?

Yes
GO to Pinpoint Test AT Pinpoint Test AT: DTC U0140:87.

No
GO to T3.

T3 RETRIEVE THE RECORDED DTCs FROM THE SJB (Smart Junction Box) SELF-TEST

- Check for recorded DTCs from the SJB (Smart Junction Box) self-test.

Are any SJB (Smart Junction Box) DTCs recorded?

Yes
REFER to Body Control Systems for correct navigation of the DTC.

No
GO to T4.

T4 CARRY OUT THE IPC (Instrument Panel Cluster) DOOR AJAR WARNING INDICATOR ACTIVE COMMAND USING THE SCAN TOOL

- Ignition ON.

- Enter the following diagnostic mode on the scan tool: IPC (Instrument Panel Cluster) DataLogger.

- Select the IPC (Instrument Panel Cluster) door ajar warning indicator (DOOR_AJAR) active command. Command the door ajar warning indicator on and off while observing the door ajar warning indicator.

Does the door ajar warning indicator illuminate when commanded on, and turn off when commanded off?

Yes
INSTALL a new SJB (Smart Junction Box). TEST the system for normal operation.

No
INSTALL a new IPC (Instrument Panel Cluster). REFER to Instrument Panel Cluster (IPC) . TEST the system for normal operation.