Headlamp Aiming Control

HEADLAMP AIMING CONTROL

System Description
The headlamp aiming system is controlled by the headlamp aiming switch.

Power is supplied at all times
- to ignition relay, located in the IPDM E/R (intelligent power distribution module engine room), and
- through 50 A fusible link (letter f, located in the fuse and fusible link box)
- to BCM (body control module) terminal 70, and
- to headlamp low relay, located in the IPDM E/R (intelligent power distribution module engine room), and
- through 20 A fuse (No. 53, located in the IPDM E/R)
- to CPU (central processing unit) of the IPDM E/R.

With the ignition switch in the ON or START position, power is supplied
- to ignition relay, located in the IPDM E/R, and
- through 10 A fuse (No. 59, located in the fuse and relay box)
- to BCM terminal 38.

When the ignition switch is in the ACC or ON position, power is supplied
- through 10 A fuse [No. 4, located in the fuse block (J/B)]
- to BCM terminal 11.

When the lighting switch is in the 2ND position or AUTO position (auto lights ON), the headlamp low relay (located in the IPDM E/R) is energized. When energized, power is supplied
- through 15 A fuse (No. 41, located in the IPDM E/R)
- through IPDM E/R terminal 26
- to front combination lamp LH and RH (headlamp aiming motor) terminal 8.

Ground is supplied
- to front combination lamp LH and RH (headlamp aiming motor) terminal 4
- through grounds E9, E15 and E24, and
- to front combination lamp LH and RH (headlamp aiming motor) terminal 7
- through headlamp aiming switch terminal 1
- through headlamp aiming switch terminal 2
- through grounds M57, M61 and M79.

With power and ground supplied, headlamp aiming motors operate according to the aiming switch position.