System Description: Notes

WARNING: This page is about a different car, the 2003 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.

All front wiper relays (HI, LO) are included in IPDM E/R.
Wiper switch (combination switch) is composed of a combination of 5 output terminals and 5 input terminals. Terminal combination status is read by BCM 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 BCM.

Power is supplied at all times

through 50 A fusible link (letter F, located in fusible link box.)
to BCM (body control module) terminal 7.
through 20 A fuse [No. 74 located in IPDM E/R (intelligent power distribution module engine room)]
to front wiper relay [built in IPDM E/R (intelligent power distribution module engine room)]
through 15 A fuse [No. 73 located in IPDM E/R (intelligent power distribution module engine room)]
to CPU (central processing unit) in the IPDM E/R (intelligent power distribution module engine room).

When the ignition switch ON or START position, power is supplied

through 10 A fuse [No. 1 located in fuse block (J/B)]
to BCM (body control module) terminal 35 and,
through 10 A fuse [No. 80, located in IPDM E/R (intelligent power distribution module engine room)]
to front wiper relay [built in IPDM E/R (intelligent power distribution module engine room)] and
to front wiper high relay [built in IPDM E/R (intelligent power distribution module engine room)]
through IPDM E/R (intelligent power distribution module engine room) terminal 18
to front washer motor terminal 2.

Ground is supplied

to BCM (body control module) terminal 8
through grounds E17 and E43
to IPDM E/R (intelligent power distribution module engine room) terminals 14 and 45
through grounds E17 and E43
to combination switch (wiper switch) terminal 12
through grounds M30 and M66.