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DTC B1534 or B1535

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 B1534 02: Left Rear Door Handle Switch Circuit Short to Ground

DTC B1535 02: Right Rear 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 left and right rear exterior door handle switch signal circuits provide inputs to the keyless entry control module when the rear exterior door handle switches are activated. These inputs allow the keyless entry control module to detect a rear door open request. The keyless entry control module provides voltage to each rear exterior door handle switch via the left and right rear door handle switch signal circuits. When a rear 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

B1534 02

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

B1535 02

The keyless entry control module detects the right rear 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 rear exterior door handle switches.

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 Left Rear Door Handle Switch or Exterior Right Rear Door Handle Switch parameter while using the rear door handle. The parameter should change between Active and Inactive.

Circuit/System Testing
  1. Ignition OFF, disconnect the harness connector at the B27LR Door Handle Switch - Left Rear Exterior or B27RR Door Handle Switch - Right Rear Exterior.
  2. Ignition ON, verify the following scan tool parameter is Inactive:
    3. • Left Rear Door: Exterior Left Rear Door Handle Switch
    • Right Rear Door: Exterior Right Rear Door Handle Switch
    ⇒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 following scan tool parameter is Active.
    4. • Left Rear Door: Exterior Left Rear Door Handle Switch
    • Right Rear Door: Exterior Right Rear Door Handle Switch
    ⇒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 B27LR Door Handle Switch - Left Rear Exterior or B27RR Door Handle Switch - Right Rear Exterior.

Component Testing

Static Test

  1. Ignition OFF, disconnect the harness connector at the B27LR Door Handle Switch - Left Rear Exterior or B27RR Door Handle Switch - Right Rear 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 B27LR Door Handle Switch - Left Rear Exterior or B27RR Door Handle Switch - Right Rear Exterior.
  3. With the switch in the closed position, test for less than 1 Ω between the signal terminal 2 and the ground terminal 1
    4. ⇒If greater than the specified range, replace the B27LR Door Handle Switch - Left Rear Exterior or B27RR Door Handle Switch - Right Rear Exterior.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

    •  Rear Side Door Outside Handle Replacement
    • Control Module References for keyless entry control module replacement, setup, and programming
   


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