Schematic Reference: Body Rear End Schematics

Connector End View Reference: Body Rear End Connector End Views , Body Control System Connector End Views and Electrical Center Identification Views

Did you perform the Body Rear End Diagnostic System Check?

Go to Step  2

Go to Diagnostic System Check - Body Rear End

Verify that the hatch release is inoperative.

Does the hatch release operate normally?

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

Go to Step  3

1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. With a scan tool command the liftgate lock motor to Unlock.

Does the liftgate open?

Go to Step  5

Go to Step  4

1. Probe the liftgate/endgate lock motor unlock control circuit of the BCM C1 harness connector with a test lamp that is connected to a good ground.
2. With a scan tool command the liftgate lock motor to Unlock.

Does the test lamp illuminate?

Go to Step 7

Go to Step 8

1. Disconnect the liftgate release switch.
2. Probe the liftgate release switch signal circuit of the liftgate release switch harness connector with a test lamp that is connected to a good ground.

Does the test lamp illuminate?

Go to Step  6

Go to Step  9

Connect a test lamp between the liftgate release switch signal circuit of the liftgate release switch harness connector and the ground circuit of the liftgate release switch harness connector.

Does the test lamp illuminate?

Go to Step  10

Go to Step  13

Test the liftgate/endgate lock motor lock control circuit for an open. 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  17

Go to Step 11

Test the liftgate/endgate lock motor unlock control circuit for a short to ground or an open. 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  17

Go to Step  12

Test the liftgate release 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  17

Go to Step  12

Inspect for poor connections at the harness connector of the liftgate release switch. 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  17

Go to Step  14

Inspect for poor connections at the harness connector of the liftgate lock actuator. 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  17

Go to Step  15

Inspect for poor connections at the harness connector of the body control module. 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  17

Go to Step  16

Repair the open in the liftgate release switch ground circuit. 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  17

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Replace the liftgate release switch.

Did you complete the replacement?

Go to Step  17

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Replace the liftgate lock actuator.

Did you complete the replacement?

Go to Step  17

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

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

Did you complete the replacement?

Go to Step  17

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step  2