B1023

DTC B1023

DIAGNOSTIC INSTRUCTIONS
- Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Initial Inspection and Diagnostic Overview
- Review Strategy Based Diagnosis for an overview of the diagnostic approach.
- Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC DESCRIPTOR

DTC B1023 00
Integral Switch Performance

CIRCUIT/SYSTEM DESCRIPTION
The driver door module (DDM) and front passenger door module (PDM) each contain switches that control power door lock and window functions. The DDM also contains the control switch for the power outside rear view mirrors. These switches are integrated within the door control modules and are not serviceable as separate components. The DDM and PDM monitor these switch inputs for internal faults and set DTC B1023 00 if any are detected.

CONDITIONS FOR RUNNING THE DTC
Battery voltage must be between 9-16 volts.

CONDITIONS FOR SETTING THE DTC
The DDM or PDM detects multiple inputs from a window or door lock switch.

ACTION TAKEN WHEN THE DTC SETS
The driver or passenger door module ignores inputs from the malfunctioning 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 status code.
- A history DTC will clear after 50 ignition cycles or with a scan tool using the clear DTCs function.

CIRCUIT/SYSTEM VERIFICATION
1. Ignition ON, verify the scan tool door switch parameters are OFF.
- If not the specified value, replace the appropriate door module.
2. Clear all DTCs and operate the integrated switches at each door control module within the Conditions for Running the DTC.
- If the DTC resets, replace the affected door module.

REPAIR INSTRUCTIONS
Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests