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
- Passenger Exterior Door Handle Switch Circuit Short to Ground
Diagnostic Fault Information
Circuit/System Description
The passenger exterior door handle switch signal circuit provides inputs to the keyless entry control module when the passenger exterior door handle switch is activated. These inputs allow the keyless entry control module to detect a passenger door open request. The keyless entry control module provides a signal voltage to the passenger exterior door handle switch via the passenger door handle switch signal circuit. When the passenger door handle is activated, the switch closes and the voltage signals from the keyless entry control module is pulled to ground.
Conditions for Running the DTC
Battery voltage is between 9-16 V.
Conditions for Setting the DTC
The remote control door lock receiver detects the passenger exterior door handle switch signal circuit is shorted to ground or closed for greater than 60 s.
Action Taken When the DTC Sets
* The passenger door will not open when the exterior passenger door handle is pulled unless the door is first unlocked.
* The passenger exterior 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 Passenger Door Handle Switch parameter changes between Active and Inactive when pulling the passenger door handle.
• If the parameter does not change
Refer to Circuit/System Testing.
• If the parameter changes
3. All OK.
Circuit/System Testing
1. Ignition OFF and all vehicle systems OFF, disconnect the harness connector at the B27P door handle switch - passenger exterior. 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 Passenger 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 Passenger 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 B27P door handle switch - passenger exterior.
Component Testing
1. Ignition OFF, disconnect the harness connector at the B27P door handle switch - passenger exterior.
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 B27P door handle switch - passenger exterior.
• 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 B27P door handle switch - passenger exterior.
• If less than 3 ohms
4. All OK
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the repair.
* Front Side Door Outside Handle Replacement Front Side Door Outside Handle Replacement
* Control Module References Control Module References for keyless entry control module replacement, programming and setup