System Description: Notes

WARNING: This page is about a different car, the 2007 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

Both front wiper relays are located in the IPDM E/R (intelligent power distribution module engine room).
The wiper switch (combination switch) is composed of a combination of 5 output terminals and 5 input terminals. Terminal combination status is read by the BCM (body control module) when the wiper switch is turned ON.
BCM controls front wiper LO, HI, and INT (intermittent) operation.
IPDM E/R operates the wiper motor according to CAN communication signals from the BCM.

Power is supplied at all times

to ignition relay, located in the IPDM E/R, and
through 50A fusible link (letter g, located in the fuse and fusible link box)
to BCM terminal 70
through 30A fuse (No. 39, located in the IPDM E/R)
to front wiper relay (located in the IPDM E/R).

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

through 10A fuse [No. 15, located in the fuse block (J/B)]
to combination switch terminal 2
through 10A fuse [No. 1, located in the fuse block (J/B)]
to BCM terminal 38.

Ground is supplied

to BCM terminal 67 and
to combination switch terminal 9
through grounds M57, M61 and M79
to IPDM E/R terminals 38 and 59 and
to front wiper motor terminal 2
through grounds E9, E15 and E24.