Hazard Warning Lamps: Description and Operation

HAZARD LAMP OPERATION
Power is supplied at all times
- to BCM (body control module) terminal 7
- through 40 A fusible link [letter F, located in the fuse and fusible link box], and
- to combination meter terminal 24
- through 10 A fuse [No. 19, located in the fuse block (J/B)].

Ground is supplied
- to hazard switch terminal 1
- through grounds M30 and M66,
- to BCM terminals 8,
- through grounds E17, E43 and F152
- to combination meter terminals 10, 11 and 12
- through grounds M30 and M66.

When the hazard switch is depressed, ground is supplied
- to BCM terminal 61
- through hazard lamp switch terminal 2.

The BCM then supplies power
- through BCM terminal 22
- to front combination lamp LH terminal 2(*1)
- to front combination lamp LH terminal 1(*2)
- to rear combination lamp LH terminal 2
- through BCM terminal 21
- to front combination lamp RH terminal 2(*1)
- to front combination lamp RH terminal 1(*2)
- to rear combination lamp RH terminal 2.

Ground is supplied
- to the front combination lamp LH terminal 1 through grounds E17, E43 and F152(*1)
- to the front combination lamp LH terminal 4 through grounds E17, E43 and F152(*2)
- to the front combination lamp RH terminal 1 through grounds E17, E43 and F152(*1)
- to the front combination lamp RH terminal 4 through grounds E17, E43 and F152(*2)
- to the rear combination lamp LH terminal 4 through grounds T14, B6, B5 and D105.
- to the rear combination lamp RH terminal 4 through grounds T14, B6, B5 and D105.

The BCM also supplies input to unified meter and A/C amp terminals 1 and 11 across the CAN communication lines. This input is processed by the unified meter control unit in the combination meter through the unified meter and A/C amp, which in turn supplies ground to the left and right turn signal indicator lamps.

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

NOTE: *1: Xenon headlamp, *2: Halogen headlamp.