Diagnostic Instructions
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
| • | DTC B1023 00 will set when the DDM or PDM detects multiple inputs from a window or door lock switch. |
| • | Condition must be present for greater than 30 seconds. |
Action Taken When the DTC Sets
The DDM or PDM 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. |
Reference Information
Schematic Reference
Door Control Module Schematics
Connector End View Reference
Vehicle Access Connector End Views
Electrical Information Reference
Scan Tool Reference
Circuit/System Verification
- Ignition ON, install a scan tool and display the inputs data list of the affected door module. All integrated switch inputs should display INACTIVE while not in use.
| ⇒ | If any of the integrated switch inputs are displayed as ACTIVE while not in use, replace the door control module associated with the malfunctioning switch. |
- 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 appropriate door control module. |
Repair Instructions
Perform the
Diagnostic Repair Verification
after completing the diagnostic procedure.
Control Module References
for DDM or PDM replacement, setup, and programming
