DTC B1474, B2966, 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: Exterior Door Handle Switch CircuitDTC B2966: Left Front Door Handle Switch Circuit
DTC B2981: Interior Door Handle Switch Circuit
DTC B3848: Interior Door Handle Switch Circuit
DTC B3849: 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 | -- |
Driver Door Latch Enable Control | 1 | 1 | B2517 | -- |
Front Passenger Door Latch Control | 1 | 1 | B2518 | -- |
Front Passenger Door Latch Enable Control | 1 | 1 | B2518 | -- |
Driver Door Lock Switch Lock Signal | B3152 | 2 | 2 | -- |
Driver Door Lock Switch Unlock Signal | B3142 | 2 | 2 | -- |
Left Front Exterior Door Handle Switch Signal | B3849 | 1 | 1 | -- |
Left Front Interior Door Handle Switch Signal | B3848 | 1 | 1 | -- |
Passenger Door Lock Switch Lock Signal | B3155 | 2 | 2 | -- |
Passenger Door Lock Switch Unlock Signal | B3145 | 2 | 2 | -- |
Right Front Exterior Door Handle Switch Signal | B1474 | 1 | 1 | -- |
Right Front Interior Door Handle Switch Signal | B2981 | 1 | 1 | -- |
Driver Exterior Door Handle Switch Ground | -- | 1 | 1 | -- |
Driver Interior Door Handle Switch Ground | -- | 1 | 1 | -- |
Passenger Exterior Door Handle Switch Ground | -- | 1 | 1 | -- |
Passenger Interior Door Handle Switch Ground | -- | 1 | 1 | -- |
Driver Door Lock Switch Ground | -- | 2 | 2 | -- |
Passenger Door Lock Switch Ground | -- | 2 | 2 | -- |
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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.
Conditions for Running the DTC
Battery voltage must be between 9-16 volts.
Conditions for Setting the DTC
B1474
The PDM detects a short to ground on the exterior door handle switch signal circuit for greater than 180 seconds
B2966
The RCDLR detects a short to ground on the interior door handle switch signal circuit for greater than 180 seconds
B2981
The PDM detects a short to ground on the interior door handle switch signal circuit for greater than 180 seconds
B3848
The DDM detects a short to ground on the door handle switch signal circuit for greater than 180 seconds
B3849
The DDM detects a short to ground on the exterior door handle switch signal circuit 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 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 Ext. Driver Door Handle Switch and Ext. Psgr. Door Handle Switch parameters while using the driver and passenger exterior door handles. The parameters should change between Active and Inactive.
- Observe the scan tool Int. Driver Door Handle Switch and Int. Psgr. Door Handle Switch parameters while using the driver and passenger interior door handles. The parameters should change between Active and Inactive.
| ⇒ | If the parameter does not change, refer to Exterior Door Handle Malfunction. |
| ⇒ | If the parameter does not change, refer to Interior Door Handle Malfunction. |
Circuit/System Testing
Exterior Door Handle Malfunction
- Ignition OFF, disconnect the harness connector at the appropriate exterior door handle switch.
- Ignition ON, verify with a scan tool the Ext. Door Handle Switch parameter is Inactive.
- If all circuits test normal, test or replace the exterior door handle switch.
| ⇒ | If not the specified value, test the signal circuit terminal D for a short to ground. If the circuit tests normal, replace the door module. |
Interior Door Handle Malfunction
- Ignition OFF, disconnect the harness connector at the appropriate interior door handle switch.
- Ignition ON, verify with a scan tool the Int. Door Handle Switch parameter is Inactive.
- If all circuits test normal, test or replace the interior door handle switch.
| ⇒ | If not the specified value, test the signal circuit terminal C for a short to ground. If the circuit tests normal, replace the door module. |
Component Testing
- Ignition OFF, disconnect the harness connector at the appropriate door handle switch.
- Test for infinite resistance between the signal terminal and the ground terminals listed below with the switch in the open position.
- Test for less than 2 ohms between the signal terminal and the ground terminals listed below with the switch in the closed position.
- If greater than the specified range, replace the door handle.
| • | Exterior passenger door handle switch signal terminal D and ground terminal C |
| • | Exterior driver door handle switch signal terminal D and ground terminal C |
| • | Interior passenger door handle switch signal terminal C and ground terminal A |
| • | Interior driver door handle switch signal terminal C and ground terminal A |
| ⇒ | If not the specified value, replace the door handle. |
| • | Exterior passenger door handle switch signal terminal D and ground terminal C |
| • | Exterior driver door handle switch signal terminal D and ground terminal C |
| • | Interior passenger door handle switch signal terminal C and ground terminal A |
| • | Interior driver door handle switch signal terminal C and ground terminal A |
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, B2966, 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: Passenger Exterior door Handle Switch Circuit LowDTC B2966: Left Front Door Handle Switch Circuit
DTC B2981: Right Front Door Handle Switch Circuit
DTC B3848: Interior Door Handle Switch Circuit
DTC B3849: Driver Exterior Door Handle Switch Circuit Low
Diagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Driver Door Latch Control | 1 | 1 | B2517 | -- |
Driver Door Latch Enable Control | 1 | 1 | B2517 | -- |
Front Passenger Door Latch Control | 1 | 1 | B2518 | -- |
Front Passenger Door Latch Enable Control | 1 | 1 | B2518 | -- |
Driver Door Lock Switch Lock Signal | B3152 | 2 | 2 | -- |
Driver Door Lock Switch Unlock Signal | B3142 | 2 | 2 | -- |
Left Front Exterior Door Handle Switch Signal | B3849 | 1 | 1 | -- |
Left Front Interior Door Handle Switch Signal | B3848 | 1 | 1 | -- |
Passenger Door Lock Switch Lock Signal | B3155 | 2 | 2 | -- |
Passenger Door Lock Switch Unlock Signal | B3145 | 2 | 2 | -- |
Right Front Exterior Door Handle Switch Signal | B1474 | 1 | 1 | -- |
Right Front Interior Door Handle Switch Signal | B2981 | 1 | 1 | -- |
Driver Exterior Door Handle Switch Ground | -- | 1 | 1 | -- |
Driver Interior Door Handle Switch Ground | -- | 1 | 1 | -- |
Passenger Exterior Door Handle Switch Ground | -- | 1 | 1 | -- |
Passenger Interior Door Handle Switch Ground | -- | 1 | 1 | -- |
Driver Door Lock Switch Ground | -- | 2 | 2 | -- |
Passenger Door Lock Switch Ground | -- | 2 | 2 | -- |
| ||||
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.
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 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 Ext. LF Door Handle Switch and Ext. RF Door Handle Switch parameters while using the driver and passenger exterior door handles. The parameters should change between Active and Inactive.
- Observe the scan tool Int. LF Door Handle Switch and Int. RF Door Handle Switch parameters while using the driver and passenger interior door handles. The parameters should change between Active and Inactive.
| ⇒ | If the parameter does not change, refer to Exterior Door Handle Malfunction |
| ⇒ | If the parameter does not change, refer to Interior Door Handle Malfunction |
Circuit/System Testing
Exterior Door Handle Malfunction
- Ignition OFF, disconnect the harness connector at the appropriate exterior door handle switch.
- Ignition ON, verify with a scan tool the Ext. Door Handle Switch parameter is Inactive.
- If all circuits test normal, test or replace the exterior door handle switch.
| ⇒ | If not the specified value, test the signal circuit terminal A for a short to ground. If the circuit tests normal, replace the RCDLR. |
Interior Door Handle Malfunction
- Ignition OFF, disconnect the harness connector at the appropriate interior door handle switch.
- Ignition ON, verify with a scan tool the Int. Door Handle Switch parameter is Inactive.
- If all circuits test normal, test or replace the interior door handle switch.
| ⇒ | If not the specified value, test the signal circuit terminal B for a short to ground. If the circuit tests normal, replace the RCDLR. |
Component Testing
- Ignition OFF, disconnect the harness connector at the appropriate door handle switch.
- Test for infinite resistance between the signal terminal and the ground terminals listed below with the switch in the open position.
- Test for less than 2 ohms between the signal terminal and the ground terminals listed below with the switch in the closed position.
- If greater than the specified range, replace the door handle.
| • | Exterior passenger door handle switch signal terminal A and ground terminal C |
| • | Exterior driver door handle switch signal terminal A and ground terminal C |
| • | Interior passenger door handle switch signal terminal B and ground terminal A |
| • | Interior driver door handle switch signal terminal B and ground terminal A |
| ⇒ | If not the specified value, replace the door handle. |
| • | Exterior passenger door handle switch signal terminal A and ground terminal C |
| • | Exterior driver door handle switch signal terminal A and ground terminal C |
| • | Interior passenger door handle switch signal terminal B and ground terminal A |
| • | Interior driver door handle switch signal terminal B and ground terminal A |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for RCDLR replacement, setup, and programming |
