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 B3265 00: Trunk/Hatch/Liftglass Release Output CircuitDiagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Tonneau Release Relay B+ | 1 | 1 | -- | -- |
Tonneau Release Switch Signal | B2730 00 | 2 | 2 | -- |
Tonneau Latch Control | 1 | 1 | 1 | -- |
Tonneau Release Relay Control | B3265 00 | B3265 00 | B3265 00 | -- |
Tonneau Latch Ground | -- | 1 | 1 | -- |
Rear Closure Release Switch Ground | -- | 2 | 2 | -- |
1. Tonneau latch malfunctioning 2. Rear closure release switch malfunction | ||||
Circuit/System Description
The body control module (BCM) provides a low side drive output that controls the tonneau release relay. The BCM monitors the voltage level on the tonneau release relay control circuit to determine when a failure has occurred. The voltage level on this circuit should be high while the tonneau release relay is not energized, that is the tonneau latch has not been activated. Voltage will be less than 1V when the relay is energized. When the BCM receives a tonneau release signal from a switch or keyless entry transmitter, it responds by applying ground to the tonneau release relay control circuit, which energizes the tonneau release relay.
Conditions for Running the DTC
The system voltage is 9-16 volts.
Conditions for Setting the DTC
The BCM detects a fault in the tonneau release relay control circuit when the output is active.
Action Taken When the DTC Sets
The tonneau latch will malfunction.
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 become a history DTC. |
| • | A history DTC will clear after 50 ignition cycles. |
Reference Information
Connector End View Reference
Description and Operation
Tonneau Cover Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
Command the Trunk Release Test with a scan tool. The tonneau latch should release the tonneau cover.
Circuit/System Testing
- Ignition OFF, disconnect the Tonneau Release relay.
- Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 85 and ground.
- Connect a test lamp between the control circuit terminal 86 and the B+ circuit terminal 85.
- Command the Trunk Release Test ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
- If all circuits test normal, test or replace the Tonneau Release relay.
| ⇒ | If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal and the B+ circuit fuse is open, test the control circuit terminal 87 for a short to ground. If the circuit tests normal, test or replace the Tonneau Release relay. |
| ⇒ | If the test lamp is always ON, test the control circuit for a short to ground. If the circuit tests normal, replace the BCM. |
| ⇒ | If the test lamp is always OFF, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the BCM. |
Component Testing
- Ignition OFF, disconnect the Tonneau Release relay.
- Test for 60-180 Ω between terminals 85 and 86.
- Test for infinite resistance between the following terminals:
- Install a 25A fused jumper wire between relay terminal 85 and 12V. Install a jumper wire between relay terminal 86 and ground. Test for less than 2 Ω between terminals 30 and 87.
| ⇒ | If not within the specified range, replace the relay. |
| • | 30 and 86 |
| • | 30 and 87 |
| • | 30 and 85 |
| • | 85 and 87 |
| ⇒ | If less than the specified value, replace the relay. |
| ⇒ | If greater than the specified range, replace the relay. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for BCM replacement, setup, and programming |
