System Description: Notes

WARNING: This page is about a different car, the 2004 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

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 15A fuse [No. 41, 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 j , located in the fuse and fusible link box)
to BCM (body control module) terminal 42

through 15A fuse [No. 3 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. 34 located in the IPDM E/R (intelligent power distribution module engine room)]
to combination meter terminal 31
through 10A fuse [No.19 located in fuse block (J/B)]
to ignition relay [located in the IPDM E/R (intelligent power distribution module engine room)] from battery
through BCM terminal 54
to front power window switch RH terminal 10
through BCM terminal 53
to front power window switch LH terminal 10.

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

to BCM (body control module) terminal 38
through 10A fuse [No. 16, 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 30
through 10A fuse [No. 14 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 11
through 10A fuse [No. 4, located in the fuse block (J/B)].

Ground is supplied

to BCM (body control module) terminal 49 and 52
to combination meter terminal 32
through grounds M57, M61, and M79
to IPDM E/R (intelligent power distribution module engine room) terminals 38 and 60
through grounds E9, E15 and E24.