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For 1990-2009 cars only
Makes 🢒 Buick 🢒 2004 🢒 Rendezvous - AWD 🢒 Body 🢒 Instrument Panel, Gages, and Console 🢒 Rear Hatch/Gate Ajar Indicator Malfunction

Rear Hatch/Gate Ajar Indicator Malfunction Aztek

Step

Action

Yes

No

Schematic Reference: Body Rear End Schematics

Connector End View Reference: Body Rear End Connector End Views and Body Control System Connector End Views

1

Did you perform the Body Rear End Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Body Rear End

2

Verify that the rear hatch/gate ajar indicator malfunction is present.

Does the rear hatch/gate ajar indicator operate normally?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

Is the rear hatch/gate ajar indicator inoperative?

Go to Step 4

Go to Step 5

4
  1. Install a scan tool.
  2. Turn ON the ignition with the engine OFF.
  3. Open the liftgate.
  4. With a scan tool, observe the LH lift glass ajar switch and RH lift glass ajar switch parameters in the Body Control Module data list.

Does the scan tool display inactive?

Go to Step 6

Go to Step 11

5
  1. Install a scan tool.
  2. Turn ON the ignition with the engine OFF.
  3. Close the liftgate.
  4. With a scan tool, observe the LH lift glass ajar switch and RH lift glass ajar switch parameters in the Body Control Module data list.

Does the scan tool display inactive?

Go to Step 11

Go to Step 7

6
  1. Turn OFF the ignition.
  2. Disconnect the left and right lift window latch harness connectors.
  3. Turn ON the ignition with the engine OFF.
  4. Connect a 3-amp fused jumper wire between the lift glass ajar switch signal circuit of the left lift window latch harness connector and a good ground.
  5. Connect a 3-amp fused jumper wire between the lift glass ajar switch signal circuit of the right lift window latch harness connector and a good ground.

Does the rear hatch/gate ajar indicator illuminate?

Go to Step 8

Go to Step 9

7
  1. Turn OFF the ignition.
  2. Disconnect the left and right lift window latch harness connectors.
  3. Turn ON the ignition with the engine OFF.
  4. With a scan tool, observe the LH lift glass ajar switch and RH lift glass ajar switch parameters in the Body Control Module data list.

Does the scan tool display inactive?

Go to Step 12

Go to Step 10

8

Connect a 3-amp fused jumper wire between the lift glass ajar switch signal circuit of the left lift window latch harness connector and a the lift glass ajar switch ground circuit of the left lift window latch harness connector.

Connect a 3-amp fused jumper wire between the lift glass ajar switch signal circuit of the right lift window latch harness connector and a the lift glass ajar switch ground circuit of the right lift window latch harness connector.

Does the rear hatch/gate ajar indicator illuminate?

Go to Step 12

Go to Step 14

9

Test the lift glass ajar switch signal circuits for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 18

Go to Step 13

10

Test the lift glass ajar switch signal circuits for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 18

Go to Step 13

11

Inspect for poor connections at the harness connector of the instrument panel cluster (IPC). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 18

Go to Step 15

12

Inspect for poor connections at the harness connector of the appropriate lift window latch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 18

Go to Step 16

13

Inspect for poor connections at the harness connector of the body control module (BCM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 18

Go to Step 17

14

Repair the open in the lift glass ajar switch ground circuit. Refer to Wiring Repairs and Connector Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 18

--

15

Replace the IPC. Refer to Instrument Cluster Replacement in Instrument Panel, Gages, and Console.

Did you complete the repair?

Go to Step 18

--

16

Replace the appropriate lift window latch.

Did you complete the replacement?

Go to Step 18

--

17

Important: When replacing the BCM, refer to Body Control Module (BCM) Programming/RPO Configuration in Body Control System.

Replace the BCM. Refer to Body Control Module Replacement in Body Control System.

Did you complete the replacement?

Go to Step 18

--

18

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2

Rear Hatch/Gate Ajar Indicator Malfunction Rendezvous

Step

Action

Yes

No

Schematic Reference: Body Rear End Schematics

Connector End View Reference: Body Rear End Connector End Views and Body Control System Connector End Views

1

Did you perform the Body Rear End Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Body Rear End

2

Verify that the rear hatch/gate ajar indicator malfunction is present.

Does the rear hatch/gate ajar indicator operate normally?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

Is the rear hatch/gate ajar indicator inoperative?

Go to Step 4

Go to Step 5

4
  1. Install a scan tool.
  2. Turn ON the ignition with the engine OFF.
  3. Open the liftgate.
  4. With a scan tool, observe the liftgate ajar switch parameter in the Body Control Module data list.

Does the scan tool display inactive?

Go to Step 6

Go to Step 11

5
  1. Install a scan tool.
  2. Turn ON the ignition with the engine OFF.
  3. Close the liftgate.
  4. With a scan tool, observe the liftgate ajar switch parameter in the Body Control Module data list.

Does the scan tool display inactive?

Go to Step 11

Go to Step 7

6
  1. Turn OFF the ignition.
  2. Disconnect the liftgate latch harness connector.
  3. Turn ON the ignition with the engine OFF.
  4. Connect a 3-amp fused jumper wire between the endgate/liftgate ajar switch signal circuit of the liftgate latch harness connector and a good ground.

Does the rear hatch/gate ajar indicator illuminate?

Go to Step 8

Go to Step 9

7
  1. Turn OFF the ignition.
  2. Disconnect the liftgate latch harness connector.
  3. Turn ON the ignition with the engine OFF.
  4. With a scan tool, observe the liftgate ajar switch parameter in the Body Control Module data list.

Does the scan tool display inactive?

Go to Step 12

Go to Step 10

8

Connect a 3-amp fused jumper wire between the endgate/liftgate ajar switch signal circuit of the liftgate latch harness connector and the endgate/liftgate ajar switch ground circuit of the liftgate latch harness connector.

Does the rear hatch/gate ajar indicator illuminate?

Go to Step 12

Go to Step 14

9

Test the endgate/liftgate ajar switch signal circuit for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 18

Go to Step 13

10

Test the endgate/liftgate ajar switch signal circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 18

Go to Step 13

11

Inspect for poor connections at the harness connector of the instrument panel cluster. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 18

Go to Step 15

12

Inspect for poor connections at the harness connector of the liftgate latch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 18

Go to Step 16

13

Inspect for poor connections at the harness connector of the body control module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 18

Go to Step 17

14

Repair the open in the endgate/liftgate ajar switch ground circuit. Refer to Wiring Repairs and Connector Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 18

--

15

Replace the instrument panel cluster (IPC). Refer to Instrument Cluster Replacement in Instrument Panel, Gages, and Console.

Did you complete the repair?

Go to Step 18

--

16

Replace the liftgate latch.

Did you complete the replacement?

Go to Step 18

--

17

Important: When replacing the body control module (BCM), refer to Body Control Module (BCM) Programming/RPO Configuration in Body Control System.

Replace the BCM. Refer to Body Control Module Replacement in Body Control System.

Did you complete the replacement?

Go to Step 18

--

18

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2