For 1990-2009 cars

## Trunk Release Inoperative Interior Release

Step | Action | Yes | No
--- | --- | --- | ---
Schematic Reference: Release Systems Schematics
1 | Have you conducted the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle
2 | Press the rear compartment lid release switch on the driver door. Does the rear compartment lid open? | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3
3 |

1. Install the scan tool.
2. Turn ON the ignition, engine OFF, car in PARK.
3. With a scan tool, view the Valet Switch input parameter in the instrument panel module (IPM) data list.

Is the Valet Switch state ACTIVE?

Go to Step 4

Go to Step 5

4 |

1. Locate the valet switch in the instrument panel (I/P).
2. While viewing the valet switch parameter with the scan tool, operate the valet switch.

Does the valet switch state change?

Go to Step 29

Go to Step 11

5 |

1. With a scan tool, view the Trunk Release Switch input parameter in the driver door switch (DDS) data list.
2. Operate the rear compartment lid release switch.

Does the parameter change state?

Go to Step 8

Go to Step 6

6 |

1. Disconnect the rear compartment lid release switch.
2. With a scan tool, view the Trunk Release Switch input parameter in the driver door switch (DDS) data list.
3. Connect a 3-amp fused jumper between the rear compartment lid release switch signal circuit and a good ground.

Does the parameter change state?

Go to Step 7

Go to Step 12

7 |

1. With a scan tool, view the Trunk Release Switch input parameter in the RIM data list.
2. Connect a 3-amp fused jumper between the rear fog lamp switch signal circuit and rear fog lamp switch ground circuit.

Does the parameter change state?

Go to Step 16

Go to Step 21

8 |

1. Disconnect the rear compartment lid release actuator.
2. Connect a test lamp between the rear compartment lid release actuator supply voltage circuit and a good ground.
3. With a scan tool, command the rear compartment lid release ON.

Does the test lamp turn ON for 1 second?

Go to Step 9

Go to Step 10

9 |

1. Connect a test lamp between the rear compartment lid release actuator supply voltage circuit and the rear compartment lid release actuator ground circuit.
2. Command the rear compartment release relay ON.

Does the test lamp turn ON for 1 second?

Go to Step 19

Go to Step 22

10 |

1. Remove the Trunk Door Relay
2. With the appropriate terminal adapters, connect a test lamp between the supply voltage circuit and the trunk release relay control circuit cavities.
3. Command the rear compartment release relay ON.

Does the test lamp turn ON for 1 second?

Go to Step 13

Go to Step 14

11 | Test valet lockout switch signal circuit for a short to battery. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 29 | Go to Step 15
12 | Test the rear compartment lid release switch signal circuit for high resistance or an open. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 29 | Go to Step 17
13 | Test the rear compartment lid release actuator supply voltage circuit for high resistance or an open. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 29 | Go to Step 18
14 | Test the rear compartment lid release relay control circuit for high resistance or an open. Refer to Circuit Testing and Wiring Repairs . Do you find and correct the condition? | Go to Step 29 | Go to Step 20
15 | Check for poor connections at the harness connector of the valet lockout switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Do you find and correct the condition? | Go to Step 29 | Go to Step 23
16 | Check 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 . Do you find and correct the condition? | Go to Step 29 | Go to Step 24
17 | Check for poor connections at the harness connector of the DDS. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Do you find and correct the condition? | Go to Step 29 | Go to Step 25
18 | Check for poor connections at the trunk release relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Do you find and correct the condition? | Go to Step 29 | Go to Step 26
19 | Inspect for poor connections at the harness connector of the rear compartment lid release actuator. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Do you find and correct the condition? | Go to Step 29 | Go to Step 27
20 | Inspect for poor connections at the harness connector of the rear integration module (RIM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Do you find and correct the condition? | Go to Step 29 | Go to Step 28
21 | Repair the high resistance or open in the ground circuit of the rear compartment lid release switch. Refer to Wiring Repairs . Is the trouble corrected? | Go to Step 29 | --
22 | Repair the high resistance or open in the ground circuit of the rear compartment lid release actuator. Refer to Wiring Repairs . Is the trouble corrected? | Go to Step 29 | --
23 | Replace the valet lockout switch. Refer to Rear Compartment Lid Valet Lock Out Switch Replacement . Have you finished the replacement? | Go to Step 29 | --
24 | Replace the rear compartment lid release switch located on the driver door trim panel. Refer to Rear Compartment Lid Switch Replacement . Have you finished the replacement? | Go to Step 29 | --
25 | Replace the driver door switch. Refer to Door Lock and Side Window Switch Replacement - Driver Side . Have you finished the replacement? | Go to Step 29 | --
26 | Replace the trunk release relay. Have you finished the replacement? | Go to Step 29 | --
27 | Replace the trunk release actuator. Refer to Rear Compartment Lid Replacement . Have you finished the replacement? | Go to Step 29 | --
28 | Replace the RIM. Refer to Control Module References for replacement, setup, and programming. Have you finished the replacement? | Go to Step 29 | --
29 | Operate the system to verify the repair. Is the failure removed? | System OK | Go to Step 3

## Trunk Release Inoperative Exterior Release

Step | Action | Yes | No
--- | --- | --- | ---
Schematic Reference: Remote Function Schematics
1 | Have you conducted the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle
2 | Press the trunk switch on the keyless entry transmitter. Does the rear compartment lid open? | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3
3 |

1. Install the scan tool.
2. Turn ON the ignition, engine OFF, car in PARK.
3. With a scan tool, view the Trunk Release Switch input parameter in the Remote Control Door Lock (RCDLR) data list.
4. Press the trunk switch on the keyless entry transmitter.

Does the trunk release switch change states?

Go to Keyless Entry System Inoperative

Go to Step 4

4 |

1. With a scan tool, view the Trunk Release Switch input parameter in the RCDLR data list.
2. Connect a 3-amp fused jumper between the rear compartment control circuit and a good ground.

Does the parameter change state?

Go to Step 5

Go to Step 6

5 |

1. With a scan tool, view the Trunk Release Switch input parameter in the RCDLR data list.
2. Connect a 3-amp fused jumper between the rear compartment release control circuit and the rear compartment switch ground circuit.

Does the parameter change state?

Go to Step 8

Go to Step 7

6 | Test the rear compartment lid release control circuit for high resistance or an open. Refer to Circuit Testing and Wiring Repairs . Do you find and correct the condition? | Go to Step 12 | Go to Step 9
7 | Repair open circuit or high resistance in exterior rear compartment switch ground circuits. Refer to Wiring Repairs . Did you complete the repair? | Go to Step 12 | --
8 | Check for poor connections at the harness connector of the exterior rear compartment lid release switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Do you find and correct the condition? | Go to Step 12 | Go to Step 10
9 | Check for poor connections at the harness connector of the RCDLR. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Do you find and correct the condition? | Go to Step 12 | Go to Step 11
10 | Replace the exterior trunk switch. Refer to Rear Compartment Lid Switch Replacement . Have you finished the replacement? | Go to Step 12 | --
11 | Replace RCDLR. Refer to Control Module References . Have you finished the replacement? | Go to Step 12 | --
12 | Operate the system to verify the repair. Is the failure removed? | System OK | Go to Step 3