B1474

DTC B1474

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Strategy Based Diagnosis) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Diagnostic Procedure Instructions) provides an overview of each diagnostic category.

DTC Descriptor
DTC B1474 02
- Exterior Passenger Door Handle Switch Circuit Short to Ground

Diagnostic Fault Information





Circuit/System Description

The passenger door handle switch signal circuit provides inputs to the remote control door lock receiver (RCDLR) and the passenger door module (PDM) when the passenger door handle switch is activated. This input allows the PDM and RCDLR to detect a door open request. The PDM and RCDLR provide voltage to the passenger door handle switch via the right front door handle switch signal circuit. When the right front door handle is activated, the switch closes and the voltage signals from the 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 detects the passenger door handle switch signal circuit is shorted to ground or closed for greater than 180 seconds.

Action Taken When the DTC Sets

The passenger door may not open with the passenger door handle.

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 (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)

Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information

Circuit/System Verification

Ignition ON, observe the scan tool Ext. Psgr. Door Handle Switch parameter while using the passenger door handle. The parameter should change between Active and Inactive.

Circuit/System Testing

1. Ignition OFF, disconnect the X2 harness connector at the PDM.
2. Disconnect the harness connector at the passenger door handle.
3. Ignition ON, verify the scan tool Ext. Psgr. Door Handle Switch parameter is Inactive.

• If not the specified value, test the signal circuit terminal 5 for a short to ground. If the circuit tests normal, replace the RCDLR.

4. Ignition OFF, connect the X2 harness connector at the PDM.
5. Ignition ON, verify the scan tool Ext. Psgr. Door Handle Switch parameter is Inactive.

• If not the specified value, replace the PDM.

6. If all circuits test normal, test or replace the passenger door handle.

Component Testing

1. Ignition OFF, disconnect the harness connector at the passenger 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 passenger 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 passenger door handle.

Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

* Front Side Door Outside Handle Replacement (Service and Repair)
* Control Module References (Programming and Relearning) for PDM or RCDLR replacement, setup, and programming