B1535
DTC B1534 or B1535
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 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/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 a signal 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 shorted to ground or closed for greater than 60 seconds.
B1535 02
The keyless entry control module detects the right rear exterior door handle switch signal circuit is shorted to ground or closed for greater than 60 seconds.
Action Taken When the DTC Sets
The affected rear door will not open when the exterior rear door handle is pulled unless the door is first unlocked.
The affected exterior rear door handle will fail to trigger an unlock command of a locked vehicle.
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 Door Lock/Indicator Schematics
Connector End View Reference
Component Connector End Views Outside Rearview Mirror - Driver
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 Control Module References for scan tool information
Circuit/System Verification
1. Ignition ON.
2. Verify the scan tool Exterior Left Rear Door Handle Switch parameter changes between Active and Inactive when pulling the left rear door handle.
• If the parameter does not change
Refer to Circuit/System Testing.
• If the parameter changes
3. Verify the scan tool Exterior Right Rear Door Handle Switch parameter changes between Active and Inactive when pulling the right rear door handle.
• If the parameter does not change
Refer to Circuit/System Testing.
• If the parameter changes
4. All OK.
Circuit/System Testing
1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the appropriate rear B27 Door Handle Switch. It may take up to 2 minutes for all vehicle systems to power down.
2. Test for less than 10 ohms between the ground circuit terminal 1 and ground.
• If 10 ohms or greater
1. Ignition OFF.
2. Test for less than 2 ohms in the ground circuit end to end.
• If 2 ohms or greater, repair the open/high resistance in the circuit.
• If less than 2 ohms, repair the open/high resistance in the ground connection.
• If less than 10 ohms
3. Ignition ON.
4. Verify the scan tool Exterior Door Handle Switch parameter is Inactive.
• If not Inactive
1. Ignition OFF, disconnect the harness connector at the K84 keyless entry control module.
2. Test for infinite resistance between the signal circuit terminal 2 and ground.
• If less than infinite resistance, repair the short to ground on the circuit.
• If infinite resistance, replace the K84 keyless entry control module.
• If Inactive
5. Install a 3 A fused jumper wire between the signal circuit terminal 2 and the ground circuit terminal 1
6. Verify the scan tool Exterior Door Handle Switch parameter is Active.
• If not Active
1. Ignition OFF, disconnect the harness connector at the K84 keyless entry control module, ignition ON.
2. Test for less than 1 V between the signal circuit and ground.
• If 1 V or greater, repair the short to voltage on the circuit.
• If less than 1 V
3. Test for less than 2 ohms in the signal circuit end to end.
• If 2 ohms or greater, repair the open/high resistance in the circuit.
• If less than 2 ohms, replace the K84 keyless entry control module.
• If Active
7. Test or replace the rear B27 Door Handle Switch.
Component Testing
1. Ignition OFF, disconnect the harness connector at the appropriate rear B27 Door Handle Switch.
2. Test for infinite resistance between the signal terminal 2 and the ground terminal 1 with the switch in the open position.
• If less than infinite resistance
Replace the rear B27 Door Handle Switch.
• If infinite resistance
3. Test for less than 3 ohms between the signal terminal 2 and the ground terminal 1 with the switch in the closed position.
• If 3 ohms or greater
Replace the rear B27 Door Handle Switch.
• If less than 3 ohms
4. All OK
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.
* Rear Side Door Outside Handle Replacement Rear Side Door Outside Handle Replacement
* Control Module References Control Module References for keyless entry control module replacement, setup, and programming