Circuit Description
The rear compartment lid release relay is controlled by the body control module (BCM). The BCM supplies a ground signal to the rear compartment lid release relay when the keyfob button is pressed through circuit 1344. If circuit 1344 is shorted to battery, DTC B3268 is set.
Conditions for Running the DTC
| • | Voltage supplied to the body control module is in the normal operating range (approximately 9-16 volts). |
| • | The trunk release button is pressed. |
Conditions for Setting the DTC
The rear compartment lid release relay control circuit is shorted to battery positive voltage for 400 milliseconds.
Action Taken When the DTC Sets
The BCM turns off the rear compartment lid release relay control output for the remainder of the current ignition cycle.
Conditions for Clearing the DTC
| • | A current DTC B3268 will clear when the malfunction is longer present and the ignition switch is cycled. |
| • | All BCM history codes clear after 100 ignition cycles (from OFF to ON) with no current codes active during the 100 ignition cycles. |
Diagnostic Aids
If the DTC is a history DTC, the problem may be intermittent. Perform the tests while wiggling the wiring and connectors. This may cause the malfunction to appear.
Test Description
The number(s) below refer to the step number(s) on the diagnostic table.
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Listen for an audible click when the rear compartment lid release relay operates. Command both the ON and OFF states. Repeat the commands as necessary.
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Tests for voltage at the coil side of the rear compartment lid release relay. The TRUNK REL/RFA/RADIO AMP fuse supplies power to the coil side of the rear compartment lid release relay.
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Verifies that the body control module is providing ground to the rear compartment lid release relay.
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Tests if ground is constantly being applied to the rear compartment lid release relay.
Step | Action | Yes | No |
|---|---|---|---|
1 | Did you perform the Body Rear End Diagnostic System Check? | Go to Step 2 | |
Does the rear compartment lid release relay turn ON and OFF with each command? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 | |
Does the test lamp illuminate? | Go to Step 4 | Go to Step 10 | |
Does the test lamp turn ON and OFF with each command? | Go to Step 8 | Go to Step 5 | |
Does the test lamp remain illuminated with each command? | Go to Step 7 | Go to Step 6 | |
6 | Test the control circuit of the rear compartment lid release relay for a short to voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 13 | Go to Step 9 |
7 | Test the control circuit of the rear compartment lid release relay 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 13 | Go to Step 9 |
8 | Inspect for poor connections at the rear compartment lid release relay. 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 13 | Go to Step 11 |
9 | Inspect for poor connections at the harness connector of the body control module. 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 13 | Go to Step 12 |
10 | Repair the coil side feed circuit of the rear compartment lid release relay. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 13 | -- |
11 | Replace the rear compartment lid release relay. Did you complete the replacement? | Go to Step 13 | -- |
12 | Replace the body control module. Refer to Body Control Module Replacement in Body Control System. Important: Perform the set up procedure for the body control module. Refer to Body Control Module (BCM) Programming/RPO Configuration . Did you complete the replacement? | Go to Step 13 | -- |
13 |
Does the DTC reset? | Go to Step 2 | System OK |
