For 1990-2009 cars only
Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | 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 PerformanceCircuit/System Description
The radio monitors the button presses on the radio display. The radio will ignore any stuck buttons and allow full functionality of the working buttons. The only circuit required is the serial data line between the radio and the radio display.
Conditions for Running DTC
| • | System voltage is between 9-16 volts. |
| • | Ignition switch is in the ON position. |
Conditions for Setting DTC
This DTC is generated by the radio if a button is active for a period greater than 60 seconds.
Action Taken When DTC Sets
| • | The radio ignores continuous inputs from the button. |
| • | The radio will respond to all other valid button inputs. |
Conditions for Clearing the DTC
| • | The condition for setting the DTC is no longer present. |
| • | The history DTC will clear after 50 fault-free ignition cycles. |
Reference Information
Schematic Reference
Radio/Navigation System Schematics
Connector End View Reference
Description and Operation
Radio/Audio System Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information.
Circuit/System Verification
- Inspect the radio display buttons for signs of damage or foreign objects. Operate each of the radio display buttons and verify that the buttons have a smooth operation.
- Verify DTC 1023 is not set.
| ⇒ | If the buttons do not have a smooth operation, replace the radio display. |
| ⇒ | If the DTC is set, clear the DTC. If the DTC resets, replace the driver information display. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for Radio Display and Radio replacement, setup, and programming
