Door Ajar Indicator Malfunction

WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

Step	Action	Yes	No
Schematic Reference: Door Lock/Indicator Schematics Connector End View Reference: Power Door Systems Connector End Views DEFINITION: One of the door ajar messages does not display Ajar when the corresponding door is ajar, or, one of the door ajar messages displays Ajar when the corresponding door is closed
1	Did you perform the Diagnostic System Check - Vehicle?	Go to Step 2	Go to Diagnostic System Check - Vehicle
2	Verify that the Door Ajar Indicator Malfunction complaint is present. Does the Door Ajar Indicator System operate as described in the system description and operation?	Go to Testing for Intermittent Conditions and Poor Connections	Go to Step 3
3	Install a scan tool. Turn ON the ignition, with the engine OFF. Close all doors. With a scan tool, navigate to the input list by selecting: Lighting Systems Data display Body control module (BCM) Input list Observe the parameter of each door ajar switch: Left front (LF) Door Ajar Switch Right front (RF) Door Ajar Switch Left rear (LR) Door Ajar Sw. Right rear (RR) Door Ajar Sw. Does the scan tool indicate that the Door Ajar Switch parameter is in the Door Closed state for all doors?	Go to Step 4	Go to Step 5
4	Open all of the vehicle doors. With the scan tool, observe the parameter of each door ajar switch in the Data Display, Inputs list of the BCM: LF Door Ajar Switch RF Door Ajar Switch LR Door Ajar Sw. RR Door Ajar Sw. Does the scan tool indicate that the Door Ajar Switch is in the Door Open state for all doors?	Go to Testing for Intermittent Conditions and Poor Connections	Go to Step 6
5	Turn OFF the ignition. Disconnect the harness connector of the malfunctioning door lock. Turn ON the ignition, with the engine OFF. With the scan tool, observe the inoperative Door Ajar Switch parameter. Does the scan tool display Door Closed?	Go to Step 11	Go to Step 9
6	Turn OFF the ignition. Disconnect the harness connector of the malfunctioning door lock. Connect a 3-amp fused jumper wire between the door ajar switch signal circuit of the harness connector and ground. Turn ON the ignition, with the engine OFF. With the scan tool, observe the appropriate Door Ajar Switch parameter. Does the scan tool display ON?	Go to Step 7	Go to Step 8
7	Turn OFF the ignition. Connect the 3-amp fused jumper wire between the door ajar switch signal circuit and the ground circuit of the harness connector. Turn ON the ignition, with the engine OFF. With the scan tool, observe the appropriate Door Ajar Switch parameter. Does the scan tool display Door Open?	Go to Step 11	Go to Step 12
8	Test the door ajar switch signal circuit of the door lock for an open or a short to battery positive voltage. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition?	Go to Step 15	Go to Step 10
9	Test the door ajar switch signal circuit of the door lock for a short to ground. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition?	Go to Step 15	Go to Step 10
10	Inspect for poor connections at the harness connector of the suspect BCM. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs . Did you find and correct the condition?	Go to Step 15	Go to Step 13
11	Inspect for poor connections at the harness connector of the malfunctioning door lock. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition?	Go to Step 15	Go to Step 14
12	Repair the high resistance or open in the ground circuit of the door lock. Refer to Circuit Testing and Wiring Repairs . Did you complete the repair?	Go to Step 15	-
13	Replace the BCM. Refer to Control Module References for replacement, setup and programming. Did you complete the replacement?	Go to Step 15	-
14	Replace the door lock. Refer to Lock Actuator Replacement - Front Door or Lock Actuator Replacement - Rear Door . Did you complete the replacement?	Go to Step 15	-
15	Operate the system in order to verify the repair. Did you correct the condition?	System OK	Go to Step 2