Hazard Lamp Operation

Power is supplied at all times

through 50A fusible link (letter F, located in fuse, fusible link and relay box)
to BCM terminal 55,
through 10A fuse [No. 18, located in fuse block (J/B)]
to BCM terminal 42,
through 10A fuse [No. 19, located in fuse block (J/B)]
to combination meter terminal 21.

Ground is supplied

to hazard switch terminal 1
through grounds M30 and M66,
to BCM terminal 52
through grounds M30 and M66,
to combination meter terminals 1, 24 and 25
through grounds M30 and M66.

When hazard switch is depressed, ground is supplied

to BCM terminal 29
through hazard switch terminal 2.

BCM then supplies power

through BCM terminal 45
to front combination lamp LH terminal 6, and
to rear combination lamp LH terminal 3,
through BCM terminal 46
to front combination lamp RH terminal 6, and
to rear combination lamp RH terminal 3.

Ground is supplied

to front combination lamp LH terminal 4, and
to front combination lamp RH terminal 4
through grounds E17 and E43,
to rear combination lamp LH terminal 4, and
to rear combination lamp RH terminal 4
through ground B103.

The BCM also supplies input to combination meter terminals 4 and 5 across CAN communication lines. This input is processed by unified meter control unit in combination meter, which in turn supplies ground to the left and right turn signal indicator lamps.

With power and input supplied, BCM controls flashing of hazard warning lamps.