System Description: Notes

WARNING: This page is about a different car, the 2006 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.

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

Power is supplied at all times

through 10A fuse (No. 71, located in IPDM E/R)
to CPU located in IPDM E/R, and
to tail lamp relay, located in IPDM E/R,
through 50A fusible link (letter F, located in fuse, fusible link and relay box)
to BCM terminal 55,
through 10A fuse[No.18 located in fuse block (J/B)]
to BCM terminal 42,
through 15A fuse (No. 78 located in IPDM E/R)
to CPU located in IPDM E/R.

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

to CPU located in IPDM E/R, from battery direct,
through 10A fuse [No. 1, located in fuse block (J/B)]
to BCM terminal 38,
through 10A fuse [No. 14 located in fuse block (J/B)]
to combination meter terminals 22 and 23,
through 10A fuse [No.12 located in fuse block (J/B)]
to display and A/C auto amp. terminal 2, and
to NAVI control unit terminal 63 (with navigation system).

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

through 10A fuse [No. 6, located in fuse block (J/B)]
to BCM terminal 11
to combination meter terminal 18
to NAVI control unit terminal 5 (with navigation system), and
to display unit terminal 19 (with navigation system).

Ground is supplied

to BCM terminal 52
to display and A/C auto amp. terminal 5
to combination meter terminal 1, 24, and 25
to NAVI control unit terminal 1 and 21 (with navigation system), and
to display unit terminal 22 and 24 (with navigation system)
through grounds M30 and M66,
to IPDM E/R terminals 38 and 60
through grounds E17 and E43.