Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptor
DTC B2730 02: Trunk Release Switch Circuit Short to GroundDiagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Trunk Relay B+ | 1 | 1 | -- | -- |
Valet Switch B+ | 1 | 1 | -- | -- |
Rear Compartment Lid Exterior Release Switch Signal | B3618 02 | 3 | 3 | -- |
Rear Compartment Lid Interior Release Switch Signal | B2730 02 | 2 | 2 | -- |
Valet Switch Signal | 1 | 1 | 1 | -- |
Rear Compartment Lid Release Actuator Control | 1 | 1 | 1 | -- |
Trunk Release Relay Control | 1 | 1 | 1 | -- |
Rear Compartment Lid Release Actuator Ground | -- | 1 | -- | -- |
Rear Compartment Lid Exterior Release Switch Ground | -- | 3 | 3 | -- |
Rear Compartment Lid Interior Release Switch Ground | -- | 2 | 2 | -- |
1. Trunk Release Malfunction 2. Trunk Release Interior Switch Malfunction 3 Trunk Release Exterior Switch Malfunction | ||||
Circuit/System Description
The interior rear compartment lid release switch receives a signal from the driver window switch. When the interior rear compartment lid release switch is activated the signal circuit is pulled to ground. The driver window switch interprets this and sends a serial data message to the RIM requesting the rear compartment lid be released.
Conditions for Running the DTC
The system voltage is 9-16 volts.
Conditions for Setting the DTC
The driver window switch detects a short to ground in the interior rear compartment lid release switch signal circuit for greater than 60 seconds.
Action Taken When the DTC Sets
The driver window switch ignores the input from the interior trunk release switch.
Conditions for Clearing the DTC
| • | The DTC will be current for as long as the fault is present. |
| • | When the fault is no longer present, the DTC will be a history DTC. |
| • | A history DTC will clear after 50 ignition cycles. |
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
Luggage Compartment Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
Ignition ON, observe the scan tool Trunk Release Switch parameter while using the interior rear compartment lid release switch. The parameter should change from Inactive to Active.
Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the interior rear compartment lid release switch.
- Ignition ON, verify the scan tool Trunk Release Switch parameter is Inactive.
- Install a 3A fused jumper wire between the signal circuit terminal 3 and the ground circuit terminal 1. Verify the scan tool Trunk Release Switch parameter is Active.
- If the circuits test normal, test or replace the interior rear compartment lid release switch.
| ⇒ | If not the specified value, test the signal circuit terminal 3 for a short to ground. If the circuit tests normal, replace the driver window switch. |
| ⇒ | If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the driver window switch. |
Component Testing
Interior Rear Compartment Lid Release Switch
- Ignition OFF, disconnect the harness connector at the interior rear compartment lid release switch.
- Test for infinite resistance between the signal terminal 3 and the ground terminal 1 with the switch in the open position.
- Test for less than 2 ohms between the signal terminal 3 and the ground terminal 1 with the switch in the closed position.
| ⇒ | If not the specified value, replace the headlamp switch. |
| ⇒ | If greater than the specified range, replace the interior rear compartment lid release switch. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for driver window switch replacement, setup, and programming |
