Using On-Board Diagnostics

WARNING: This page is about a different car, the 2000 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.

Turn ignition on (engine off). Press RESET button to acknowledge any warning messages that may be present. Press OPTIONS button (switch 4) on Driver Information Center (DIC) and hold. See Figure . While holding OPTIONS button, press FUEL button (switch 1) 4 times within 10 seconds. System will enter automatic display mode.

In automatic display mode, each system module will be displayed on IPC followed by DTCs that exist in that system. See DTC IDENTIFICATION table. If no DTCs exist, IPC will display NO CODES for that system. If DTCs exist, each DTC will be displayed for 3 seconds followed by a one second pause. If IPC cannot communicate with any system, IPC will display NO COMM for that system. At any time during automatic display mode, manual display feature can be activated by pressing any DIC button except E/M (switch 5). When all systems have been checked in automatic mode, IPC will display NO MORE CODES for 2 seconds, and will then enter manual mode.

When manual mode is entered, IPC will display MANUAL DIAGNOSTICS for 2 seconds or until any DIC button except E/M (switch 5) is pressed. IPC will then display first system and number of DTCs set in that system, and wait for further instructions. Using DIC buttons, move through system diagnostics as necessary. See DIC BUTTON DIAGNOSTIC FUNCTIONS table.

In both diagnostic modes, systems will be displayed in the following order:

Powertrain Control Module (PCM).
Traction Control System (TCS).
Real Time Damping (RTD).
Body Control Module (BCM).
Instrument Panel Cluster (IPC).
Radio.
Heater, Ventilation and Air Conditioning (HVAC).
Left Door Control Module (LDCM).
Right Door Control Module (RDCM).
Seat Control Module (SCM).
Remote Function Actuation (RFA).

If a DTC exists in any system, display will indicate whether DTC is current (with a "C") or history (with an "H"). When E/M button (switch 5) on DIC is pressed at any time, IPC will exit diagnostics mode. On-board diagnostics will also be exited automatically if no DIC buttons are pressed for longer than 60 seconds.

When E/M button (switch 5) on DIC is pressed at any time, IPC will exit diagnostics mode. On-board diagnostics will automatically exit if no DIC buttons are pressed for longer than 60 seconds.