System Description: Notes

WARNING: This page is about a different car, the 2005 Infiniti FX45 and 2005 Infiniti FX35. However, it is still accessible from the selected car via links, so may be relevant.

Control of illumination lamps operation is dependent upon 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) across the CAN communication lines. The 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 tail lamp relay, located in IPDM E/R, and
To CPU located in IPDM E/R.

Power is also supplied at all times

Through 50A fusible link (letter M, located in fuse, fusible link and relay box)
To BCM terminal 55,
Through 15A fuse [No. 22 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,
Through 10A fuse [No. 19 located in fuse block (J/B)]
To unified meter and A/C amp. terminal 21, and
To combination meter terminal 8.

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

To ignition relay, located in IPDM E/R, from battery direct,
Through 15A fuse [No. 1 located in fuse block (J/B)]
To BCM terminal 38,
Through 10A fuse [No. 12, located in fuse block (J/B)]
To unified meter and A/C amp. terminal 22,
Through 10A fuse [No. 14 located in fuse block (J/B)]
To combination meter terminal 7.

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

Through 10A fuse [No. 6, located in fuse block (J/B)]
To BCM terminal 11.

Ground is supplied

To BCM terminals 49 and 52
To unified meter and A/C amp. terminals 29 and 30, and
To combination meter terminals 5, 6, and 15
Through grounds M35, M45, and M85,
To IPDM E/R terminals 38 and 60
Through grounds E21, E50, and E51.