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 B3849 02: Exterior Door Handle Switch Circuit Short To GroundDiagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Driver Door Module B+ | B0199 00 | B0199 00 | -- | -- |
Left Rear Door Module B+ | 3 | 3 | -- | -- |
Passenger Door Module B+ | U0200 00 | U0200 00 | -- | -- |
Right Rear Door Module B+ | 3 | 3 | -- | -- |
Driver Door Handle Switch Signal | B3849 02 | 1 | 1 | -- |
Driver Door Lock Switch Lock Signal | B3150 02 | 4 | 4 | -- |
Driver Door Lock Switch Unlock Signal | B3140 02 | 4 | 4 | -- |
Passenger Door Handle Switch Signal | B1474 02, B3849 02 | 2 | 2 | -- |
Passenger Door Lock Switch Lock Signal | B3150 02 | 4 | 4 | -- |
Passenger Door Lock Switch Unlock Signal | B3140 02 | 4 | 4 | -- |
Driver Door Deadbolt Control | 1 | 1 | 1 | -- |
Driver Door Latch Control | 1 | 1 | 1 | -- |
Driver Door Lock Indicator Control | 1 | 1 | 1 | -- |
LR Door Latch Control | 3 | 3 | 3 | -- |
Passenger Door Deadbolt Control | 2 | 2 | 2 | -- |
Passenger Door Latch Control | 2 | 2 | 2 | -- |
Passenger Door Lock Indicator Control | 2 | 2 | 2 | -- |
RR Door Latch Control | 3 | 3 | 3 | -- |
Driver Door Lock Indicator Low Reference | -- | 1 | 1 | -- |
Passenger Door Lock Indicator Low Reference | -- | 2 | 2 | -- |
Driver Door Module Ground | -- | U0199 00 | 1 | -- |
Driver Door Handle Switch Ground | -- | 1 | 1 | -- |
Left Rear Door Module Ground | -- | 3 | 3 | -- |
Passenger Door Handle Switch Ground | -- | 2 | 2 | -- |
Passenger Door Module Ground | -- | U0200 00 | 2 | -- |
Right Rear Door Module Ground | -- | 3 | 3 | -- |
1. Driver Door Lock Malfunction 2. Passenger Door Lock Malfunction 3. Rear Door Lock Malfunction 4. Door Lock Switch Malfunction | ||||
Circuit/System Description
The exterior door handle switch signal circuit provides inputs to the remote control door lock receiver (RCDLR) and the driver or passenger door module (DDM/PDM) when the exterior door handle switch is activated. This input allows the DDM/PDM and RCDLR to detect a door open request. The DDM/PDM 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/PDM and RCDLR are pulled to ground.
Conditions for Running the DTC
The system voltage is 9-16 volts.
Conditions for Setting the DTC
The RCDLR or DDM/PDM detects the front exterior door handle switch signal circuit is closed for greater than 180 seconds.
Action Taken When the DTC Sets
The RCDLR or DDM/PDM ignores inputs from the exterior door handle switch until the switch changes state.
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
Connector End View Reference
Description and Operation
Power Door Latch Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
- Ignition ON, observe the scan tool Driver Door Module Driver Door Handle parameter and the scan tool Remote Control Door Lock Receiver Ext Driver Door Handle Switch parameter while using the exterior driver door handle. The parameter should change between Inactive and Active.
- Observe the scan tool Passenger Door Module Driver Door Handle parameter and the scan tool Remote Control Door Lock Receiver Ext Psgr Door Handle Switch parameter while using the exterior passenger door handle. The parameter should change between Inactive and Active.
Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the appropriate exterior door handle switch assembly and the X1 harness connector at the RCDLR.
- Ignition ON, verify the scan tool Door Handle parameter is Inactive.
- Install a 3A fused jumper wire between the signal circuit terminal E and ground. Verify the scan tool Door Handle parameter is Active.
- Ignition OFF, connect the X1 harness connector at the RCDLR and and disconnect the X2 harness connector at the door module.
- Verify the scan tool Remote Control Door Lock Receiver Ext. Door Handle Switch parameter is Inactive.
- Install a 3A fused jumper wire between the signal circuit terminal E and ground. Verify the scan tool Ext. Door Handle Switch parameter is Active.
- If all circuits test normal, test or replace the exterior door handle switch assembly.
| ⇒ | If not the specified value, test the signal circuit terminal E for a short to ground. If the circuit tests normal, replace the door control module. |
| ⇒ | If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the door control module. |
| ⇒ | If not the specified value, test the signal circuit terminal E for a short to ground. If the circuit tests normal, replace the RCDLR. |
| ⇒ | If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the RCDLR. |
Component Testing
- Ignition OFF, disconnect harness connector at the appropriate exterior door handle.
- Test for infinite resistance between the signal terminal and the ground terminal listed below with the door handle switch in the open position.
- Test for less than 2 ohms between the signal terminal and the ground terminal listed below with the door handle switch in the closed position.
| • | Signal terminal E and ground terminal F |
| • | Signal terminal D and ground terminal C |
| ⇒ | If not the specified value, replace exterior door handle. |
| • | Signal terminal E and ground terminal F |
| • | Signal terminal D and ground terminal C |
| ⇒ | If greater than the specified range, replace exterior door handle. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for DDM, PDM, or RCDLR replacement, setup, and programming |
