DTC Descriptor
DTC B1023 00: Integral Switch Performance No Additional InformationDiagnostic Fault Information
Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
Circuit/System Description
The switch that failed and generated this DTC is part of the driver door module (DDM) or front passenger door module (PDM). When a switch is activated, the DDM or PDM actuates the appropriate component or sends a message over GMLAN serial data link to the appropriate door control module to actuate the appropriate component.
Conditions for Running the DTC
Battery voltage must be between 9-16 volts.
Conditions for Setting the DTC
The DDM or PDM receives multiple inputs from a single switch at the same time for more than 160 milliseconds. The following driver or front passenger switches will set DTC B1023:
| • | Door lock switch |
| • | Window switch |
| • | Window lockout switch |
| • | Mirror select switch |
Action Taken When the DTC Sets
The DDM/PDM ignores inputs from the malfunctioning switch and disables any functions the switch controls.
Conditions for Clearing the DTC
| • | The condition responsible for setting the DTC no longer exists. |
| • | You issue a scan tool CLEAR DTCs command. |
| • | A history DTC will clear once 50 consecutive malfunction-free ignition cycles have occurred. |
Reference Information
Schematic Reference
Connector End View Reference
Power Door Systems Connector End Views
Electrical Information Reference
Scan Tool Reference
Circuit/System Testing
Ignition ON, install a scan tool, clear all DTCs and operate the appropriate door switches within the Conditions for Running the DTC.
| ⇒ | If DTC B1023 resets as current, 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.
