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 Descriptors
DTC B3124 02: Keyless Entry Antenna 6 Short to GroundDTC B3124 05: Keyless Entry Antenna 6 High Voltage/Open
Diagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Trunk --Keyless Entry Antenna Signal | B3124 02 | B3124 05 | B3124 05 | -- |
Trunk --Keyless Entry Antenna Low Reference | -- | B3124 05 | -- | -- |
Circuit/System Description
The antenna is located on the cross bar of the trunk and is used to establish low frequency communications with the keyless entry transmitter. This antenna will prevent the user identification device from being locked in the rear compartment of the vehicle.
Conditions for Running the DTC
The handle or touch pad used to open the rear closure is activated.
Conditions for Setting the DTC
B3124 02
The keyless entry control module detects a short to ground on the trunk keyless entry antenna circuit.
B3124 05
The keyless entry control module detects a short to B+ or an open on the trunk keyless entry antenna circuit.
Action Taken When the DTC Sets
No action is taken
Conditions for Clearing the DTC
| • | A current DTC will clear when the conditions for setting the DTC are no longer present |
| • | A history DTC will clear after 50 malfunction free ignition cycles |
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
Keyless Entry System Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the T10F trunk antenna.
- Ignition ON, verify a test lamp does not illuminate between the signal circuit terminal A and ground.
- Connect a DMM, set to capture AC voltage using the MIN MAX function, between the signal circuit terminal A and the low reference circuit terminal B.
- Operate the rear closure touch pad. Verify the DMM captured an AC voltage signal.
- If all circuits test normal, test or replace the T10E trunk passive antenna.
| ⇒ | If the test lamp illuminates, test the signal circuit for a short to voltage. If the circuit tests normal, replace the keyless entry control module. |
| ⇒ | If an AC voltage was not captured, test the signal circuit and the low reference circuit for a short to ground or an open/high resistance. If the circuits test normal, replace the keyless entry control module. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for keyless entry control module replacement, setup, and programming |
