Fog/Driving Lamp: Description and Operation

System Description

OUTLINE
Power is supplied at all times
- to headlamp relay-1 terminal 2, and
- to headlamp relay-1 terminal 3
- through 20 A fuse [No. 57, located in the fuse, fusible link and relay block (J/B)], and
- to headlamp relay-1 terminal 7
- through 20 A fuse [No. 55, located in the fuse, fusible link and relay block (J/B)], and
- to headlamp battery saver control unit terminal 7
- through 10 A fuse [No. 6, located in the fuse block (J/B) No. 1], and
- to front fog lamp relay terminal 3
- through 15 A fuse (No. 76, located in the fuse, fusible link and relay box).

When the ignition switch is in ON or START position, power is supplied
- to headlamp battery saver control unit terminal 1.
- through 10 A fuse [No. 1, located in the fuse block (J/B) No. 1].

Ground is supplied to headlamp battery saver control unit terminals 4 and 11.

When lighting switch is in 2ND position, ground is supplied
- to headlamp relay-1 terminal 1 from headlamp battery saver control unit terminals 2 and 8
- through headlamp battery saver control unit terminals 3 and 9
- through lighting switch terminals 8 and 12
- through body grounds M25 and M115.

FOG LAMP OPERATION
The fog lamp switch is built into the combination switch. The lighting switch must be in the 2ND position and low (B) position, and the fog lamp switch must be ON for fog lamp operation.

With the fog lamp switch in the ON position, ground is supplied
- to front fog lamp relay terminal 2
- through the front fog lamp switch, lighting switch and body grounds M25 and M115.

The front fog lamp relay is energized and power is supplied
- from front fog lamp relay terminal 5
- to terminal 2 of each front fog lamp.

Ground is supplied to terminal 1 of each front fog lamp through body grounds E24, E42 and E62.

With power and ground supplied, the front fog lamps illuminate.

BATTERY SAVER CONTROL
When the ignition switch is turned from ON (or START) to OFF (or ACC) positions while front fog lamps are illuminated, the RAP signal is supplied to terminal 10 of the headlamp battery saver control unit from BCM terminal 135.

After counting 45 seconds by the RAP signal from the BCM to headlamp battery saver control unit, the ground supply to headlamp relay-1 terminal 1 from headlamp battery saver control unit terminals 2 and 8 is terminated.

Then the front fog lamps are turned off.

The front fog lamps are turned off when front door (driver or passenger side) is opened even if 45 seconds have not passed after ignition switch is turned from ON (or START) to OFF (or ACC) positions while front fog lamp are illuminated.

When the lighting switch is turned from OFF to 2ND after front fog lamps are turned to off by the battery saver control, ground is supplied
- to headlamp relay-1 terminal 1 from headlamp battery saver control unit terminals 2 and 8
- through headlamp battery saver control unit terminals 3 and 9 from lighting switch terminal 12.

Then front fog lamps illuminate again.