Illumination Operation By Lighting Switch

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.

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 3
to TCS OFF switch (illumination) terminal 3 (without VDC)
to VDC OFF switch (illumination) terminal 3 (with VDC)
to hazard switch (illumination) terminal 3
to AV switch (illumination) terminal 3
to audio unit terminal 8
to rear sonar system OFF switch terminal 5 (with rear sonar system)
to lamps on demand switch terminal 5
to display unit terminal 4 (without NAVI)
to display control unit terminal 14 (with NAVI)
to front air control terminal 23
to NAVI control unit terminal 25 (with NAVI)
to DVD player terminal 12 (with DVD entertainment system)
to automatic door main switch terminal 5 (with power sliding door)
to rear audio remote control unit terminal 6 (with rear audio remote control unit) and
to rear air control terminal 1.

Illumination is controlled

through illumination control switch terminal 2
to A/T device terminal 4
to TCS OFF switch terminal 4 (without VDC)
to VDC OFF switch terminal 4 (with VDC)
to audio unit terminal 7
to hazard switch terminal 4
to AV switch terminal 4
to rear sonar system OFF switch terminal 4 (with rear sonar system)
to lamps on demand switch terminal 6
to front air control terminal 24 and
to DVD player terminal 10 (with DVD entertainment system)
to automatic door main switch terminal 7 (with power sliding door)
to combination meter terminal 10.

Ground is supplied at all times

to illumination control switch terminal 3
to glove box lamp terminal -
to display unit terminal 6 (without NAVI)
to display control unit terminal 3 (with NAVI)
to front power window switch LH terminal 17 (with rear power vent windows) or terminal 15 (without rear power vent windows) and
to front power window switch RH terminal 11
through grounds M57, M61 and M79
to rear audio remote control unit terminal 15 (with rear audio remote control unit)
through grounds B7 and B19
to NAVI control unit terminal 30 (with NAVI) and
to rear air control terminal 3
through grounds B117 and B132.

With power and ground supplied, illumination lamps illuminate.