Remote Control Door Lock Receiver (RCDLR)
DTC B1474, B2981, B3848, or B3849 (RCDLR)
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.
DTC Descriptors
DTC B1474
- Right Front/Passenger Exterior Door Handle Switch Circuit
DTC B2981
- Right Front Door Handle Switch Circuit
DTC B3848
- Interior Door Handle Switch Circuit
DTC B3849
- Left Front/Driver Exterior Door Handle Switch Circuit
Diagnostic Fault Information
Circuit/System Description
The left front interior door handle, left front exterior door handle, right front interior door handle and right front exterior door handle switch signal circuits provide inputs to the remote control door lock receiver (RCDLR) when an interior or exterior door handle switch is activated. These inputs allow the RCDLR to detect a door open request. The RCDLR provides voltage to the door handle switches.
Conditions for Running the DTC
Battery voltage must be between 9-16 volts.
Conditions for Setting the DTC
The RCDLR detects a short to ground on an interior or exterior door handle switch signal circuit for greater than 180 seconds.
Actions Taken When the DTC Sets
The RCDLR will ignore the door handle switch input.
Conditions for Clearing the DTC
* The condition responsible for setting the DTC no longer exists.
* A history DTC will clear after 50 malfunction-free ignition cycles.
Reference Information
Schematic Reference
Door Lock/Indicator Schematics (Door Lock/Indicator Schematics)
Connector End View Reference
Component Connector End Views (Connector Views)
Description and Operation
Power Door Latch Description and Operation (Description and Operation)
Electrical Information Reference
* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)
Scan Tool Reference
Control Module References (Programming and Relearning) for scan tool information
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the appropriate door handle switch.
2. Ignition ON, verify with a scan tool the Door Handle Switch parameter is INACTIVE.
• If not the specified value, test the signal circuit terminal listed below for a short to ground. If the circuit tests normal, replace the RCDLR.
* Door handle switch - driver exterior terminal A
* Door handle switch - passenger exterior terminal A
* Door handle switch - driver interior terminal B
* Door handle switch - passenger interior terminal B
3. If all circuits test normal, test or replace the door handle switch.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
* Front Side Door Handle Switch Replacement (Service and Repair)
* Door Latch Release Switch Replacement - Driver Side (Service and Repair)
* Door Latch Release Switch Replacement - Passenger Side (Service and Repair)
* Control Module References (Programming and Relearning) for RCDLR replacement, setup, and programming