Did you perform the Body Rear End Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Body Rear End

1. Place the transmission in the PARK position if automatic or apply the parking brake if standard.
2. Operate the rear compartment lid release switch.

Does the rear compartment lid release?

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

Go to Step 3

1. Disconnect the rear compartment lid release relay.
2. Connect a test lamp between the rear compartment lid release relay signal circuit and a good ground.
3. Operate the rear compartment lid release switch.

Does the test lamp illuminate?

Go to Step 4

Go to Step 9

1. Connect a test lamp between the rear compartment lid release relay signal circuit and the rear compartment lid release relay ground circuit.
2. Operate the rear compartment lid release switch.

Does the test lamp illuminate?

Go to Step 5

Go to Step 10

Connect a test lamp between the rear compartment lid release lid relay battery voltage circuit and a good ground.

Does the test lamp illuminate?

Go to Step 6

Go to Step 11

Connect a test lamp between the rear compartment lid release lid relay battery positive voltage circuit and the rear compartment lid release actuator signal circuit.

Does the test lamp illuminate?

Go to Step 20

Go to Step 7

1. Connect the rear compartment lid release relay.
2. Disconnect the rear compartment lid release actuator.
3. Connect a test lamp between the rear compartment lid release actuator signal circuit and a good ground.
4. Operate the rear compartment lid release switch.

Does the test lamp illuminate?

Go to Step 8

Go to Step 12

1. Connect a test lamp between the rear compartment lid release actuator signal circuit and the rear compartment lid release actuator ground.
2. Operate the rear compartment lid release switch.

Does the test lamp illuminate?

Go to Step 18

Go to Step 13

1. Connect the rear compartment lid release relay.
2. Disconnect the rear compartment lid release switch.
3. Connect a fused jumper between the rear compartment lid release switch signal circuit and the rear compartment lid release switch ground circuit.

Does the rear compartment lid release?

Go to Step 19

Go to Step 14

Repair the open or high resistance in the ground circuit of the rear compartment lid release relay. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 24

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Repair the open or high resistance in the battery voltage circuit of the rear compartment lid release relay. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 24

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Repair the open or high resistance in the signal circuit of the rear compartment lid release actuator. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 24

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Repair the open or high resistance in the ground circuit of the rear compartment lid release actuator. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 24

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Test for an open or high resistance in the signal circuit of the rear compartment lid release switch. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 24

Go to Step 15

Test for an open or high resistance in the ground circuit of the rear compartment lid release switch. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 24

Go to Step 16

Test for an open or high resistance in the signal circuit of the rear compartment lid release relay. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 24

Go to Step 17

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

Did you find and correct the condition?

Go to Step 24

Go to Step 21

Inspect for poor connections at the harness connector of the rear compartment lid release actuator connector. Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 24

Go to Step 22

Inspect for poor connections at the harness connector of the rear compartment lid release switch connector. Refer to Testing for Intermittent Conditions and Poor Connections and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 24

Go to Step 23

Replace the rear compartment lid release relay.

Did you find and correct the condition?

Go to Step 24

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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 24

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Replace the rear compartment lid release actuator. Refer to Liftgate Lock Actuator Replacement .

Did you complete the replacement?

Go to Step 24

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Replace the rear compartment lid release switch. Refer to Rear Compartment Lid Switch Replacement .

Did you complete the replacement?

Go to Step 24

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3