B3849 (With UHA/UHF)
DTC B3849 (With UHA/UHF)
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 B3849 00
- Exterior Door Handle Switch Circuit
DTC B3849 02
- Exterior Driver Door Handle Switch Circuit
Diagnostic Fault Information
Circuit/System Description
The exterior door handle switch signal circuit provides inputs to the remote control door lock receiver (RCDLR) and the driver door module (DDM) when the exterior door handle switch is activated. This input allows the DDM and RCDLR to detect a door open request. The DDM and RCDLR provide voltage to the exterior door handle switch via the front door handle switch signal circuit. When the front door handle is activated, the switch closes and the voltage signals from the DDM and RCDLR are pulled to ground.
Conditions for Running the DTC
DTC B1325 is not set
Conditions for Setting the DTC
The RCDLR or DDM detects the driver exterior door handle switch signal circuit is closed for greater than 180 seconds.
Action Taken When the DTC Sets
The RCDLR and DDM ignores inputs from the front exterior door handle switch.
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 be a history DTC.
* A history DTC will clear after 50 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 Verification
With the doors unlocked, open the driver door by using the driver exterior door handle. The driver door should release and open when using the driver exterior door handle.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the driver exterior door handle.
2. Disconnect the X1 harness connector at the RCDLR.
3. Ignition ON, test for greater than 9 volts between the signal circuit terminal E and ground.
• If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the DDM.
4. Ignition OFF, connect the harness connector X1 at the RCDLR and disconnect the harness connector X6 at the DDM.
5. Ignition ON, test for greater than 9 volts between the signal circuit terminal E and ground.
• If less than the specified range, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the RCDLR.
6. If all circuits test normal, test or replace the driver exterior door handle.
Component Testing
1. Ignition OFF, disconnect the harness connector at the driver door handle.
2. Test for infinite resistance between the signal terminal E and the ground terminal F with the switch in the open position.
• If not the specified value, replace the driver door handle.
3. Test for less than 2 ohms between the signal terminal E and the ground terminal F with the switch in the closed position.
4. If greater than the specified range, replace the driver door handle.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
* Front Side Door Outside Handle Replacement (Without UHA) (Service and Repair)Front Side Door Outside Handle Replacement (Front Door with UHA) (Service and Repair)Front Side Door Outside Handle Replacement (Front and Rear Doors with UHA) (Service and Repair)
* Control Module References (Programming and Relearning) for DDM or RCDLR replacement, setup, and programming