Rear Wiper and Washer System

REAR WIPER AND WASHER SYSTEM

System Description
- 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 (body control module) controls rear wiper ON and INT (intermittent) operation.

Power is supplied all time
- through 40 A fusible link (letter F, located in fusible link box)
- to BCM (body control module) terminal 7.

When 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,
- through 10 A fuse [NO.84, located in IPDM E/R (intelligent power distribution module engine room)]
- to rear washer motor terminal 2.

Ground is supplied
- to BCM (body control module) terminal 8
- through grounds E17, E43 and F152,
- to combination switch (wiper switch) terminal 12
- through grounds M30 and M66.

REAR WIPER OPERATION
When wiper switch is in rear wiper ON position, BCM detect rear wiper ON signal by BCM wiper switch reading function.

BCM operate rear wiper motor, power is supplied
- through BCM terminal 20
- to rear wiper motor 4.

Ground is supplied
- to rear wiper motor terminal 1
- through body grounds B5, B6, D105 and T14.
With power and ground is supplied, the rear wiper operates.

INTERMITTENT OPERATION
The rear wiper motor operates the wiper arms at low speed approximately every 7 seconds.

When wiper switch is in rear wiper INT position, BCM detect rear wiper INT signal by BCM wiper switch reading function. (Refer to "BCM WIPER SWITCH READING FUNCTION".)

BCM operate rear wiper motor, power is supplied
- through BCM terminal 20
- to rear wiper motor 4.

Ground is supplied
- to rear wiper motor terminal 1
- through body grounds B5, B6, D105 and T14.

With power and ground is supplied. Rear wiper operates at intermittent.

AUTO STOP OPERATION
With rear wiper switch turned OFF, rear wiper motor will continue to operate until wiper arm reaches rear wiper stopper.
Then wiper motor turns the other way and wiper arm moves once until wiper arm reaches stopper.

WASHER OPERATION
When wiper switch is in rear wiper washer position, BCM detect rear wiper washer signal by BCM wiper switch reading function (Refer to "BCM WIPER SWITCH READING FUNCTION".), and combination switch (wiper switch) ground is supplied
- to rear washer motor terminal 1
- through combination switch (wiper switch) terminal 13
- to combination switch (wiper switch) terminal 12
- through body grounds M30 and M66.
With ground is supplied, rear washer motor is operated.

When BCM detects that rear washer motor has operated for 0.4 seconds or longer, BCM operates rear wiper motor low speed.

When BCM detects washer switch is OFF, low speed operation cycles approximately 3 times and then stops.

BCM WIPER SWITCH READING FUNCTION
Refer to "BCM WIPER SWITCH READING FUNCTION" in FRONT WIPER AND WASHER SYSTEM