DTC B1474, B2981, B3848, or B3849 DDM/PDM
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 B1474: Right Front/Passenger Exterior Door Handle Switch CircuitDTC 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 | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Driver Door Latch Control | 1 | 1 | B2517, 1 | -- |
Driver Door Latch Enable Control | 1 | 1 | B2517, 1 | -- |
Front Passenger Door Latch Control | 1 | 1 | B2518, 1 | -- |
Front Passenger Door Latch Enable Control | 1 | 1 | B2518, 1 | -- |
Driver Door Lock Switch Lock Signal | B3152, 2 | 2 | 2 | -- |
Driver Door Lock Switch Unlock Signal | B3142, 2 | 2 | 2 | -- |
Left Front Exterior Door Handle Switch Signal | B3849, 2 | 1 | 1 | -- |
Left Front Interior Door Handle Switch Signal | B3848, 2 | 1 | 1 | -- |
Passenger Door Lock Switch Lock Signal | B3155, 2 | 2 | 2 | -- |
Passenger Door Lock Switch Unlock Signal | B3145, 2 | 2 | 2 | -- |
Right Front Exterior Door Handle Switch Signal | B1474, 1 | 1 | 1 | -- |
Right Front Interior Door Handle Switch Signal | B2981, 1 | 1 | 1 | -- |
Door Handle Switch - Driver Exterior Ground | -- | 1 | 1 | -- |
Door Handle Switch- Driver Interior Ground | -- | 1 | 1 | -- |
Door Handle Switch - Passenger Exterior Ground | -- | 1 | 1 | -- |
Door Handle Switch - Passenger Interior Ground | -- | 1 | 1 | -- |
Door Lock Switch - Driver Ground | -- | 2 | 2 | -- |
Door Lock Switch - Passenger Ground | -- | 2 | 2 | -- |
1. Power Door Latch System Malfunction 2. Power Door Locks Inoperative | ||||
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 driver door module (DDM) or passenger door module (PDM) when an interior or exterior door handle switch is activated. These inputs allow the door module to detect a door open request. The door modules provide voltage to the door handle switches. If the door module detects that a ground is applied for greater than 180 seconds, a DTC is set and the door module will ignore the door handle switch input. For more detailed information concerning power door latch operation refer to Power Door Latch Description and Operation .
Conditions for Running the DTC
Battery voltage must be between 9-16 volts.
Conditions for Setting the DTC
| • | The DDM or PDM detects a short to ground on an interior or exterior door handle switch signal circuit. |
| • | Condition must be present for greater than 180 seconds. |
Actions Taken When the DTC Sets
The DDM or PDM will ignore the door handle switch input.
Conditions for Clearing the DTC
| • | The condition responsible for setting the DTC no longer exists. |
| • | You issue a scan tool CLEAR DTCs command. |
Diagnostic Aids
The following conditions may cause an intermittent malfunction:
| • | There is an intermittent short to ground in a door handle switch signal circuit. |
| • | An interior or exterior door handle switch is shorted to ground internally. |
| • | A interior or exterior door handle switch was activated for longer than 180 seconds. |
Reference Information
Schematic Reference
Door Lock/Indicator Schematics
Connector End View Reference
Vehicle Access Connector End Views
Electrical Information Reference
Scan Tool Reference
Circuit/System Testing
- Ignition OFF, disconnect the appropriate door handle switch harness connector.
- Ignition ON, Verify with a scan tool the appropriate Door Handle Switch parameter is inactive.
- If all circuits test normal, test or replace the appropriate door handle switch.
| ⇒ | If not the specified value, test the appropriate door handle switch signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the appropriate door control module. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for DDM or PDM replacement, setup, and programming |
DTC B1474, B2981, B3848, or B3849 RCDLR
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 B1474: Right Front/Passenger Exterior Door Handle Switch CircuitDTC 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 | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Driver Door Latch Control | 1 | 1 | B2517, 1 | -- |
Driver Door Latch Enable Control | 1 | 1 | B2517, 1 | -- |
Front Passenger Door Latch Control | 1 | 1 | B2518, 1 | -- |
Front Passenger Door Latch Enable Control | 1 | 1 | B2518, 1 | -- |
Driver Door Lock Switch Lock Signal | B3152, 2 | 2 | 2 | -- |
Driver Door Lock Switch Unlock Signal | B3142, 2 | 2 | 2 | -- |
Left Front Exterior Door Handle Switch Signal | B3849, 2 | 1 | 1 | -- |
Left Front Interior Door Handle Switch Signal | B3848, 2 | 1 | 1 | -- |
Passenger Door Lock Switch Lock Signal | B3155, 2 | 2 | 2 | -- |
Passenger Door Lock Switch Unlock Signal | B3145, 2 | 2 | 2 | -- |
Right Front Exterior Door Handle Switch Signal | B1474, 1 | 1 | 1 | -- |
Right Front Interior Door Handle Switch Signal | B2981, 1 | 1 | 1 | -- |
Door Handle Switch - Driver Exterior Ground | -- | 1 | 1 | -- |
Door Handle Switch - Driver Interior Ground | -- | 1 | 1 | -- |
Door Handle Switch - Passenger Exterior Ground | -- | 1 | 1 | -- |
Door Handle Switch - Passenger Interior Ground | -- | 1 | 1 | -- |
Door Lock Switch - Driver Ground | -- | 2 | 2 | -- |
Door Lock Switch - Passenger Ground | -- | 2 | 2 | -- |
1. Power Door Latch System Malfunction 2. Power Door Locks Inoperative | ||||
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. If the RCDLR detects that a ground is applied for greater than 180 seconds, a DTC is set and the RCDLR will ignore the door handle switch input. For more detailed information concerning power door latch operation refer to Power Door Latch Description and Operation .
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. |
| • | Condition must be present 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. |
| • | You issue a scan tool CLEAR DTCs command. |
Diagnostic Aids
The following conditions may cause an intermittent malfunction:
| • | There is an intermittent short to ground in a door handle switch signal circuit. |
| • | An interior or exterior door handle switch is shorted to ground internally. |
| • | A interior or exterior door handle switch was activated for longer than 180 seconds. |
Reference Information
Schematic Reference
Door Lock/Indicator Schematics
Connector End View Reference
Vehicle Access Connector End Views
Electrical Information Reference
Scan Tool Reference
Circuit/System Testing
- Ignition OFF, disconnect the appropriate door handle switch harness connector.
- Ignition ON, Verify with a scan tool the appropriate door handle switch parameter is inactive.
- If all circuits test normal, test or replace the appropriate door handle switch.
| ⇒ | If not the specified value, test the appropriate door handle switch signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the RCDLR. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for RCDLR replacement, setup, and programming |
