System Description: Notes

WARNING: This page is about a different car, the 2007 Nissan Maxima. 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).
Wiper switch (combination switch) is composed of a combination of 5 output terminals and 5 input terminals. Terminal combination status is read by BCM (body control module) when switch is turned ON.
BCM controls front wiper LO, HI, and INT (intermittent) operation.
IPDM E/R operates 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 f , located in the fuse and fusible link box)
to BCM terminal 70, and
through 20A 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

to ignition relay, located in the IPDM E/R, and
through 10A fuse [No. 1, located in the fuse block (J/B)]
to BCM terminal 38, and
through 10A fuse (No. 47, located in the IPDM E/R)
through IPDM E/R terminal 44
to front washer motor terminal +.

Ground is supplied

to BCM terminal 67, and
to combination switch terminal 12
through grounds M57, M61 and M79, and
to IPDM E/R terminals 38 and 60, and
to front wiper motor terminal E
through grounds E15 and E24.