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

Instrumentation, Message Center and Warning Chimes

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

Normal Operation

The Instrument Cluster (IC) receives the door ajar status for the LH front door, RH front door, LH rear door, RH rear door, liftgate, and liftgate glass ajar switch status from the Smart Junction Box (SJB) over the Medium Speed Controller Area Network (MS-CAN) communication bus. When the IC (Instrument Cluster) receives a message from the SJB (Smart Junction Box) that one or more doors are open or ajar, the IC (Instrument Cluster) turns on the door ajar warning indicator. If the door ajar status message is missing for greater than 5 seconds, the IC (Instrument Cluster) sets DTC U0140 and defaults the door ajar warning indicator on.

NOTE: If DTC U0140 is set in the SJB (Smart Junction Box), other symptoms may also be present 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:

- SJB (Smart Junction Box)

- IC (Instrument Cluster)

PINPOINT TEST N : 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.

N1 CHECK THE INTERIOR LIGHTING OPERATION

- NOTE: The interior lamp switch must not be in the dome defeat position.
Open and close each door, liftgate and liftgate glass while monitoring the interior lamps.


Do the interior lamps operate correctly with each door, liftgate and liftgate glass?

Yes
GO to N2.

No
REFER to Lighting and Horns.

N2 RETRIEVE THE RECORDED DTCs FROM THE IC (Instrument Cluster) SELF-TEST

- Check for recorded IC (Instrument Cluster) DTCs from the self-test.

Is DTC U0140 recorded?

Yes
GO to Pinpoint Test BC Pinpoint Test BC: DTC U0140.

No
GO to N3.

N3 RETRIEVE THE RECORDED DTCs FROM THE SJB (Smart Junction Box) SELF-TEST

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

Are any SJB (Smart Junction Box) DTCs recorded?

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

No
GO to N4.

N4 CARRY OUT THE IC (Instrument Cluster) INDICATOR LAMP CONTROL ACTIVE COMMAND USING THE SCAN TOOL

- Ignition ON.

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

- Select the IC (Instrument Cluster) door ajar warning indicator (DRAJLMP) active command. Command the door ajar warning indicator on and off. Observe the door ajar 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 IC (Instrument Cluster). REFER to Instrument Cluster (IC) . TEST the system for normal operation.