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

Instrumentation, Message Center and Warning Chimes

Pinpoint Tests

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 receives a message from the SJB that one or more doors are open or ajar, the IC turns on the door ajar warning indicator. If the door ajar status message is missing for greater than 5 seconds, the IC sets DTC U0140 and defaults the door ajar warning indicator on.

NOTE: If DTC U0140 is set in the SJB, 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
- IC




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.

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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.

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N2 RETRIEVE THE RECORDED DTCs FROM THE IC SELF-TEST



- Check for recorded IC DTCs from the self-test.
- Is DTC U0140 recorded?

Yes
GO to Pinpoint Test BB. Pinpoint Tests BB: DTC U0140

No
GO to N3.

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N3 RETRIEVE THE RECORDED DTCs FROM THE SJB SELF-TEST



- Check for recorded SJB DTCs from the self-test.
- Are any SJB DTCs recorded?

Yes
REFER to Body Control Systems, DTC Charts for correct navigation of the DTC. Diagnostic Trouble Code Descriptions

No
GO to N4.

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N4 CARRY OUT THE IC INDICATOR LAMP CONTROL ACTIVE COMMAND USING THE SCAN TOOL



- Ignition ON.
- Enter the following diagnostic mode on the scan tool: IC DataLogger .
- Select the IC 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. REFER to Body Control Systems. TEST the system for normal operation.

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

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