Illumination Operation By Lighting Switch

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

With the lighting switch 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 controls the tail lamp relay coil, which, when energized, directs power

through IPDM E/R terminal 22
to illumination control switch terminal 1
to glove box lamp terminal +
to A/T device (illumination) terminal +
to TCS OFF switch (illumination) terminal 3 (TCS models)
to VDC OFF switch (illumination) terminal 3 (with VDC)
to hazard switch (illumination) terminal 3
to front heated seat switch LH (illumination) terminal 5 (with heated seat)
to front heated seat switch RH (illumination) terminal 5 (with heated seat)
to AV switch (illumination) terminal 3
to unified meter and A/C amp. terminal 23
to audio unit terminal 8
to heated steering wheel switch terminal 3 (with heated steering wheel)
to interior room lamp (console box illumination) terminal 2
to rear sunshade switch (front and rear) terminal 5 (with rear sunshade) and
to rear heated seat switch (LH and RH) terminal 5 (with rear heated seats).

Illumination control

through illumination control switch terminal 2
to A/T device (illumination) terminal -
to TCS OFF switch (illumination) terminal 4 (TCS models)
to VDC OFF switch (illumination) terminal 4 (with VDC)
to audio unit terminal 7
to hazard switch (illumination) terminal 4
to front heated seat switch LH (illumination) terminal 6 (with heated seat)
to front heated seat switch RH (illumination) terminal 6 (with heated seat)
to AV switch (illumination) terminal 4
to heated steering wheel switch (illumination) terminal 4 (with heated steering wheel)
to interior room lamp (console box illumination) terminal 3
to rear sunshade switch (front and rear) terminal 6 (with rear sunshade)
to rear heated seat switch (LH and RH) terminal 6 (with rear heated seats) and
to unified meter and A/C amp. terminal 31.

Ground is supplied at all times

to illumination control switch terminal 3
to glove box lamp terminal -
to front power window switch LH terminal 17
to front power window switch RH terminal 11
through grounds M57, M61 and M79
to rear power window switch LH (illumination) terminal 7 (with front only power window anti-pinch system) or terminal 11 (with front and rear power window anti-pinch system)
through grounds B7 and B19
to rear power window switch RH (illumination) terminal 7 (with front only power window anti-pinch system) or terminal 11 (with front and rear power window anti-pinch system)
through grounds B117 and B32.

With power and ground supplied, illumination lamps illuminate.