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 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 (Door Lock/Indicator Schematics)
Connector End View Reference
Component Connector End Views (Connector End Views By Name)
Description and Operation
Power Door Locks 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 (Programming and Relearning) 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.
• 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.
• 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 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.
• If not the specified value, replace the B27B door handle switch - passenger exterior.
3. With the switch in the closed position, test for less than 5 ohm between the signal terminal 2 and the ground terminal 1
• If greater than the specified range, replace the B27B door handle switch - passenger exterior.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
* Front Side Door Outside Handle Replacement (Service and Repair)
* Control Module References (Programming and Relearning) for keyless entry control module replacement, setup, and programming