How to Switch Diagnostic Test Modes

Diagnostic Test Mode Chart:

ON-BOARD DIAGNOSTIC SYSTEM FUNCTION

Switching Diagnostic Test Modes:

NOTE: Switching the modes is not possible when the engine is running.

NOTE: When the ignition switch is turned OFF during diagnosis in each mode, and then turned back on again after power to the Engine Control Module has dropped off completely, the diagnosis will automatically return to Diagnostic Test Mode 1.