For 1990-2009 cars

## Trunk Release Inoperative w/ Remote Keyless Entry

Step | Action | Yes | No
--- | --- | --- | ---
1 | Did you perform A Diagnostic System Check - Body Rear End? | Go to Step 2 | Go to Diagnostic System Check - Body Rear End
2 | Operate the rear compartment lid release switch. Does the rear compartment release? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3
3 | With a scan tool command the trunk release control ON and OFF, found in the body control module (BCM), miscellaneous testing. Does the rear compartment release? | Go to Step 4 | Go to Step 6
4 |

1. Disconnect the rear compartment lid release switch.
2. Connect a fused jumper between the rear compartment lid release switch signal circuit and a good ground.
3. Observe the trunk release input in the BCM data list.

Does the scan tool display active?

Go to Step 5

Go to Step 9

5 | Connect a fused jumper wire between the rear compartment lid release switch signal circuit and the rear compartment lid release switch ground circuit. Does the scan tool display active? | Go to Step 10 | Go to Step 13
6 |

1. With a test lamp back probe the trunk release motor control signal circuit.
2. With a scan tool command the trunk release control to ON.

Does the test lamp illuminate?

Go to Step 7

Go to Step 11

7 |

1. Disconnect the rear compartment lid release actuator.
2. Connect a test lame between the rear compartment lid release actuator signal circuit and a good ground.
3. With a scan tool command the trunk release control to ON.

Does the test lamp illuminate?

Go to Step 8

Go to Step 14

8 |

1. Connect a test lamp between the rear compartment lid release actuator signal circuit and the ground circuit of the trunk release actuator.
2. With a scan tool command the trunk release control to ON.

Does the test lamp illuminate?

Go to Step 12

Go to Step 15

9 | Test the signal circuit of the rear compartment lid release switch for an open or a high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct and condition? | Go to Step 19 | Go to Step 11
10 | Inspect for poor connections at the harness connector of the rear compartment lid release switch. 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 19 | Go to Step 16
11 | Inspect for poor connections at the harness connector of the 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 19 | Go to Step 18
12 | Inspect for poor connections at the harness connector of the rear compartment lid release switch. 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 19 | Go to Step 17
13 | Repair the open or high resistance in the ground circuit of the rear compartment lid release switch. Refer to Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 19 | --
14 | Repair the open or high resistance in the signal circuit of the rear compartment lid release actuator. Refer to Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 19 | --
15 | Repair the open or high resistance in the ground circuit of the rear compartment lid release actuator. Refer to Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 19 | --
16 | Replace the rear compartment lid release switch. Did you complete the replacement? | Go to Step 19 | --
17 | Replace the rear compartment lid release actuator. Did you complete the replacement? | Go to Step 19 | --
18 | 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 19 | --
19 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2