Circuit Description
The exterior trunk release switch is located just under the lip of the deck lid in the license plate pocket area. As a vehicle with locked doors is approached with a key fob and the exterior trunk release switch is pressed, the keyless entry antenna transmitter broadcasts a challenge approximately in a 1 meter range to the key fob. If the response from the key fob via radio frequency (RF) is a valid response, the locked door will be passively unlocked/unlatched allowing the trunk to be opened.
Conditions for Setting the DTC
The remote control door lock receiver (RCDLR) will set this DTC during antenna activation if the exterior trunk release is Open, shorted to battery or shorted to ground. The RCDLR can only set a DTC when the vehicle system voltage is between 9.0 and 16.0 volts.
Action Taken When the DTC Sets
The RCDLR will set and store a DTC B3618.
Conditions for Clearing the DTC
| • | The RCDLR no longer detects a open, short to power or short to ground on the exterior trunk release switch circuit. |
| • | The use of a scan tool |
Test Description
The numbers below refer to the step numbers on the diagnostic table.
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Verifies that DTC B3618 is a current DTC.
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Testing for power and ground to the exterior trunk release switch.
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Body Rear End Schematics Connector End View Reference: Body Rear End Connector End Views | |||
1 | Did you perform the Diagnostic System Check-Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
|
Important: To achieve service by pass mode, key ON engine OFF, a programmed key fob must be detected within the passenger compartment of the vehicle.
Does the scan tool display DTC B3618 as a current DTC? | Go to Step 3 | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | |
Does the voltage measure approximately battery voltage? | Go to Step 6 | Go to Step 4 | |
4 | Test the exterior trunk release power and ground circuits for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 11 | Go to Step 5 |
5 | Inspect for poor connections at the remote control door lock receiver (RCDLR). 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 11 | Go to Step 7 |
6 | Inspect for poor connections at the exterior trunk 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 11 | Go to Step 9 |
7 | Test the exterior trunk release power circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 11 | Go to Step 8 |
8 | Replace the RCDLR . Refer to Remote Control Door Lock Receiver Replacement in Keyless Entry. Did you complete the replacement? | Go to Step 11 | -- |
9 | Test both the exterior trunk release power and ground circuits for a short to power. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 11 | Go to Step 10 |
10 | Replace the exterior trunk release switch. Did you complete the replacement? | Go to Step 11 | -- |
11 |
Does the DTC reset? | Go to Step 3 | System OK |
