• | 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. |
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
---|---|---|---|---|
Door Lock Relay Control | B3135 00 | 1 | 1 | -- |
1. Power Door Locks Inoperative - All Doors |
When the door lock switch is place in to the LOCK position, ground is applied through the switch to the body control module (BCM). The BCM then applies a voltage through the door lock relay control circuit to the coil side of the lock relay in the body electrical center (BEC). The relay then engages and applies voltage to all the door lock assemblies.
The ignition is ON.
The BCM receives a ground signal on the door lock relay control circuit.
The BCM cease attempt to lock the doors.
The BCM clears this code from current when the fault is removed from the system.
Door Lock/Indicator Schematics
Ignition ON, place the door lock switch to the LOCK position. All doors should lock.
⇒ | If the DTC does not reset, replace the Relay. |
⇒ | If the DTC does not reset, replace the BEC. |
⇒ | If all circuits/connections test normal, replace the BCM. |
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
• | Instrument Panel Electrical Center or Junction Block Replacement - Right Side |
• | Control Module References for BCM replacement, setup, and programming |