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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

Short to Ground

Open/High Resistance

Short to Voltage

Signal Performance

Passenger Door Handle Switch Signal

B1474 02

1

1

--

Left Rear Door Handle Switch Signal

B1534 02

1

1

--

Right Rear Door Handle Switch Signal

B1535 02

1

1

--

Passenger Door Handle Switch Ground

--

1

1

--

Left Rear Door Handle Switch Ground

--

1

1

--

Right Rear Door Handle Switch Ground

--

1

1

--

1. Power Door Catch Malfunction

Circuit/System Description

The passenger front exterior door handle switch signal circuit provides inputs to the keyless entry control module when the passenger front exterior door handle switch is activated. This input allows the keyless entry control module to detect a door open request. The keyless entry control module provides voltage to the passenger front exterior door handle switch via the passenger front door handle switch signal circuit. When the passenger front door handle is activated, the switch closes and the voltage signals from the keyless entry control module are pulled to ground.

Conditions for Running the DTC

Battery voltage is between 9-16 V.

Conditions for Setting the DTC

The keyless entry control module detects the passenger front exterior door handle switch signal circuit is short-circuited to ground or closed for more than 60 s.

Action Taken When the DTC Sets

The keyless entry control module ignores inputs from the passenger front exterior door handle switch.

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

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 using the passenger door handle. The parameter should change between Active and Inactive.

Circuit/System Testing
  1. Ignition OFF, disconnect the harness connector at the B27P 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.
  3. 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.
    4. ⇒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.
  4. If all circuits test normal, test or replace the B27P Door Handle Switch - Passenger Exterior.

Component Testing

Static Test

  1. Ignition OFF, disconnect the harness connector at the B27P Door Handle Switch - Passenger Exterior.
  2. With the switch in the open position, door handle released, test for infinite resistance between the signal terminal 2 and ground terminal 1.
    3. ⇒If not the specified value, replace the B27P Door Handle Switch - Passenger Exterior.
  3. With the switch in the closed position, door handle pulled, test for less than 1 Ω between the signal terminal 2 and ground terminal 1.
    4. ⇒If greater than the specified range, replace the B27P 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
   


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