System Description: Notes

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 (body control module) receives input signal requesting the illumination lamps to illuminate. This input signal 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 (intelligent power distribution module engine room) controls the tail lamp relay coil. This relay, when energized, 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 10A fuse [No. 71, 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 55
through 50A fusible link (letter F, located in the fuse and fusible link box)
to BCM (body control module) terminal 42
through 15A fuse [No. 18 located in fuse block (J/B)]
to CPU (central processing unit) in the IPDM E/R (intelligent power distribution module engine room)
through 15A fuse [No. 78 located in the IPDM E/R (intelligent power distribution module engine room)].

With the ignition switch in the ON or START position, power is supplied

to BCM (body control module) terminal 38
through 10A fuse [No. 1, located in the fuse block (J/B)]
to ignition relay in the IPDM E/R (intelligent power distribution module engine room)
from ignition switch
to combination meter terminal 41 and 42
through 10A fuse [No. 14 located in the fuse block (J/B)]
to display and A/C auto amp. terminal 27 and
to NAVI control unit terminal 27 (with NAVI)
through 10A fuse [No. 12 located in fuse block (J/B)].

With the ignition switch in the ACC or ON position, power is supplied

to BCM (body control module) terminal 11
to combination meter terminal 40
to NAVI control unit terminal 6 (with NAVI)
to display unit terminal 19 (with NAVI)
through 10A fuse [No. 6, located in the fuse block (J/B)].

Ground is supplied

to BCM (body control module) terminal 52
to display and A/C auto amp. terminal 24
to combination meter terminal 45, 46, and 47
to NAVI control unit terminal 1 and 4 (with NAVI)
to display unit terminal 22 and 24 (with NAVI)
through grounds M30 and M66
to IPDM E/R (intelligent power distribution module engine room) terminals 38 and 60
through grounds E17 and E43.