B1474

DTC B1474

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 B1474 02

Passenger Exterior Door Handle Switch Circuit Short to Ground

Diagnostic Fault Information







Circuit/System Description

The keyless entry control module supplies a 12V signal to the passenger exterior door handle switch. When the door handle is activated, the switch closes and the voltage signal from the keyless entry control module is pulled to ground, this input allows the keyless entry control module to detect a door open request

Conditions for Running the DTC

Battery voltage is between 9-16 V.

Conditions for Setting the DTC

The keyless entry control module detects the right front exterior door handle switch signal circuit is shorted to ground or closed for greater than 60 s.

Action Taken When the DTC Sets

Passenger door will not open unless the passenger door is unlocked.

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 40 ignition cycles.

Reference Information

Schematic Reference

Door Lock/Indicator Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Power Door Locks Description and Operation

Electrical Information Reference

- Circuit Testing
- Connector Repairs
- Testing for Intermittent Conditions and Poor Connections
- Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

Ignition ON, observe the scan tool keyless entry control module Exterior Passenger Door Handle Switch parameter while pulling and releasing the passenger door handle. The parameter should change between Active and Inactive as the handle is pulled and released.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the B27B door handle switch - passenger exterior.
2. Ignition ON, verify the scan tool Exterior Passenger Door Handle Switch parameter is Inactive.
3. If not the specified value, test the signal circuit terminal 2 for a short to ground. If the circuit tests normal, replace the K84 keyless entry control module.
4. Install a 3 A fused jumper wire between the signal circuit terminal 2 and ground. Verify the scan tool Exterior Passenger Door Handle Switch parameter is Active.
5. If not the specified value, test the signal circuit terminal 2 for an open/high resistance. If the circuit tests normal, replace the K84 keyless entry control module.
6. If all circuits test normal, test or replace the B27B door handle switch - passenger exterior.

Component Testing

Passenger Door Handle Switch

1. Ignition OFF, disconnect the harness connector at the B27B door handle switch - passenger exterior.
2. With the switch in the open position, test for infinite resistance between the signal terminal 2 and the ground terminal 1.
3. If not the specified value, replace the B27B door handle switch - passenger exterior.
4. With the switch in the closed position, test for less than 5 Ohms between the signal terminal 2 and the ground terminal 1
5. If greater than the specified range, replace the B27B door handle switch - passenger exterior.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
- Front Side Door Outside Handle Replacement
- Control Module References for keyless entry control module replacement, setup, and programming