System Description: Notes

WARNING: This page is about a different car, the 2006 Nissan Pathfinder. 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 CPU (central processing unit) of the IPDM E/R 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 ignition relay, located in the IPDM E/R, and
to tail lamp relay, located in the IPDM E/R, and
through 50A fusible link (letter g , located in the fuse and fusible link box)
to BCM terminal 70, and
through 20A fuse (No. 53, located in the IPDM E/R)
to CPU of the IPDM E/R, and
through 10A fuse [No.19, located in fuse block (J/B)]
to combination meter terminal 3.

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

to ignition relay, located in the IPDM E/R, and
through 10A fuse [No. 1, located in the fuse block (J/B)]
to BCM terminal 38.

Ground is supplied

to BCM terminal 67 and
to combination meter terminals 13 and 23
through grounds M57, M61 and M79, and
to IPDM E/R terminals 38 and 59
through grounds E9, E15 and E24.