System Description

Illumination

System Description
Control of the illumination lamps operation is dependent upon the position of the lighting switch (combination switch). When the lighting switch is placed in the 1ST or 2ND position (or if the auto light system is activated) the BCM receives input requesting the illumination lamps to illuminate. This input is communicated to the IPDM E/R (intelligent power distribution module engine room) across the CAN communication lines. The central processing unit of the IPDM E/R controls the tail lamp relay coil. When energized, this relay directs power to the illumination lamps, which then illuminate.

Power is supplied at all times
- to tail lamp relay, located in the IPDM E/R (intelligent power distribution module engine room)
- through 10 A fuse [No. 38, located in the IPDM E/R (intelligent power distribution module engine room)].

Power is also supplied at all times
- to BCM (body control module) terminal 7
- through 50 A fusible link (letter f, located in the fuse and fusible link box).

With the ignition switch in the ON or START position, power is supplied
- to BCM (body control module) terminal 35
- through 10 A fuse [No. 12, located in the fuse block (J/B)].

With the ignition switch in the ACC or ON position, power is supplied
- to BCM (body control module) terminal 36
- through 10 A fuse [No. 6, located in the fuse block (J/B)].

Ground is supplied
- to BCM (body control module) terminals 8, 27, and 63
- through body grounds M57, M61, E15, and E24.

ILLUMINATION OPERATION BY LIGHTING SWITCH
With the lighting switch in the 1ST or 2ND position (or if the auto light system is activated), the BCM (body control module) receives input requesting the illumination lamps to illuminate. This input is communicated to the IPDM E/R (intelligent power distribution module engine room) across the CAN communication lines. The central processing unit of the IPDM E/R controls the tail lamp relay coil, which when energized, directs power
- through terminal 37 of the IPDM E/R
- to illumination control switch terminal 1,
- to A/T device terminal 3,
- to TCS switch terminal 3,
- to audio unit terminal 8,
- to CD player terminal 23,
- to hazard switch terminal 5,
- to rear window defogger switch terminal 5,
- to heated seat switch LH terminal 2,
- to heated seat switch RH terminal 2,
- to A/C control unit terminal 7,
- to A/C auto amplifier terminal 24,
- to combination meter terminal 48, and
- to glove box lamp terminal +.

With the ignition switch in ON or START, power is supplied
- to auto anti-dazzling inside mirror terminal +,
- through 10 A fuse [No. 14, located in the fuse block (J/B)], and
- to BCM (body control module) terminal 35,
- through 10 A fuse [No. 12, located in the fuse block (J/B)].

With the ignition switch in ON or START, power is also supplied
- to main power window and door lock/unlock switch terminal 12 (with left front only power window anti-pinch system) or terminal 17 (with left and right front power window anti-pinch system),
- to front power window switch RH terminal 5 (with left front only power window anti-pinch system) or terminal 13 (with left and right front power window anti-pinch system),
- to rear power window switch RH terminal 5,
- to rear power window switch LH terminal 5,
- through BCM terminal 29.

Ground is supplied at all times
- to illumination control switch terminal 3,
- to glove box lamp terminal -, and
- to auto anti-dazzling inside mirror terminal -
- through body grounds M57 and M61, and
- to rear power window switch RH terminal 8,
- through body ground B117, and,
- to rear power window switch LH terminal 8,
- through body grounds B7 and B19.

The main power window and door lock/unlock switch and the front power window switch RH illumination circuits are case grounded.

Controlled ground is supplied
- to A/T device terminal 4,
- to TCS switch terminal 4,
- to audio unit terminal 7,
- to CD player terminal 25,
- to hazard switch terminal 4,
- to rear window defogger switch terminal 6,
- to heated seat switch LH terminal 1,
- to heated seat switch RH terminal 1,
- to A/C control unit terminal 8,
- to A/C auto amplifier terminal 25, and
- to combination meter terminal 47
- from illumination control switch terminal 2.

With power and ground supplied, illumination lamps illuminate.

BATTERY SAVER CONTROL
When the combination switch (lighting switch) is in the 1ST or 2ND position (or if auto light system is activated), and the ignition switch is turned from ON or ACC to OFF, the battery saver control feature is activated. Under this condition, the illumination lamps remain illuminated for 30 minutes, unless the combination switch (lighting switch) position is changed. If the combination switch (lighting switch) position is changed, then the illumination lamps are turned off after a 30 second delay.

When the lighting switch is turned from OFF to 1ST or 2ND position (or if auto light system is activated) after illumination lamps have been turned off by the battery saver control, the illumination lamps illuminate again.