Self-diagnosis Mode 2 (without the HDS) From Mode 1, disconnected the special tool (A) from the multiplex control inspection connector for about 10 seconds, then reconnect it. The ceiling light and ignition key light should come on for 2 seconds, then blink twice more at 0.2 second intervals. This means the system has gone from Mode 1 to Mode 2.
To cancel Mode 2, disconnect the special tool from the multiplex control inspection connector for more than 10 seconds or turn the ignition switch OFF.