Hazard Warning Lamps: Description and Operation

Turn Signal And Hazard Warning Lamps Schematic:

Turn Signal and Hazard Warning Lamps Schematic

HAZARD LAMP OPERATION
Power is supplied at all times
- through 50 A fusible link (letter f, located in the fuse and fusible link box)
- to BCM terminal 70, and
- through 10 A fuse [No. 19, located in the fuse block (J/B)]
- to combination meter terminal 8.

Ground is supplied
- to BCM terminal 67 and
- to combination meter terminal 17
- through grounds M57, M61 and M79.

When the hazard switch is depressed, ground is supplied
- to BCM terminal 29
- through hazard switch terminal 4
- through hazard switch terminal 6
- through grounds M57, M61 and M79.

When the hazard switch is depressed, the BCM, interpreting it as turn signal is ON, outputs turn signal from BCM terminals 60 and 61.

The BCM supplies power
- through BCM terminals 60 and 61
- to front combination lamp LH and RH terminal 5
- to rear combination lamp LH and RH terminal 8
- to door mirror LH and RH terminal 15.

Ground is supplied
- to front combination lamp LH and RH terminal 4
- to rear combination lamp LH and RH terminal 1
- through grounds E9, E15 and E24, and
- to door mirror LH and RH terminal 11
- through grounds M57, M61, and M79.

BCM sends signal to combination meter through CAN communication lines, and turns on turn signal indicator lamps within combination meter.

COMBINATION SWITCH READING FUNCTION
Refer to "COMBINATION SWITCH READING FUNCTION" in Body Control System. Description and Operation

CAN Communication System Description
Refer to LAN-4, "Information Bus". Description and Operation