When Mechanical Key Is Used

WARNING: This page is about a different car, the 2008 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

With the key inserted in the ignition switch, the ignition switch in OFF position, and the driver's door open, the warning chime will sound.

Power is supplied

through key switch and ignition knob switch terminal 4
to BCM terminal 37.

Ground is supplied

to BCM terminal 47
through front door switch LH terminal 2.

Front door switch LH is case grounded.

BCM sends door open signal to unified meter and A/C amp. via CAN communication lines.

BCM detects key inserted into the ignition switch, and sends key warning signal to unified meter and A/C amp. via CAN communication lines. Unified meter and A/C amp. sends key warning signal to combination meter via communication lines between unified meter and A/C amp. and combination meter.

When combination meter receives key warning signal, it sounds warning chime.