Operation By Lighting Switch

With the lighting switch in the 1ST or 2ND position (or if auto light system is activated), the BCM receives input signal requesting parking, license plate, side marker and tail lamps to illuminate. This input signal is communicated to the IPDM E/R across CAN communication lines. The CPU located in IPDM E/R controls tail lamp relay coil, which when energized, directs power

through IPDM E/R terminal 22
to front side marker lamp LH terminal 1
to front combination lamp LH terminal 7
to license plate lamp LH terminal 1
to rear combination lamp LH terminal 1
to front side marker lamp RH terminal 1
to front combination lamp RH terminal 7
to license plate lamp RH terminal 1, and
to rear combination lamp RH terminal 1.

Ground is supplied at all times

to front side marker lamp LH terminal 2
through grounds E17 and E43,
to front combination lamp LH terminal 4
through grounds E17 and E43,
to license plate lamp LH terminal 2
through grounds B5 and B29,
to rear combination lamp LH terminal 4
through ground B103,
to front side marker lamp RH terminal 2
through grounds E17 and E43,
to front combination lamp RH terminal 4
through grounds E17 and E43,
to license plate lamp RH terminal 2
through grounds B5 and B29,
to rear combination lamp RH terminal 4
through ground B103.

With power and ground supplied, parking, license plate, side marker and tail lamps illuminate.