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.

OUT LINE
Power is supplied at all times
- through 40 A fusible link (letter F, located in fuse, fusible link and relay box)
- to BCM terminal 55,
- through 10 A fuse [No. 18, located in fuse block (J/B)]
- to BCM terminal 42.

When ignition switch is in ON or START position, power is supplied
- through 10 A fuse [No. 1, located in fuse block (J/B)]
- to BCM terminal 38,
- through 10 A fuse (No. 84, located in IPDM E/R)
- through IPDM E/R terminal 44
- to rear washer motor terminal 2.

Ground is supplied
- to BCM terminal 52
- through grounds M30 and M66,
- to combination 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 70
- 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.

Intermittent Operation
The rear wiper motor operates 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 "COMBINATION SWITCH READING FUNCTION" )

BCM operate rear wiper motor, power is supplied
- through BCM terminal 70
- 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 "COMBINATION SWITCH READING FUNCTION" ), and combination switch (wiper switch) ground is supplied
- to rear washer motor terminal 1
- through combination switch terminal 13
- to combination 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 "COMBINATION SWITCH READING FUNCTION" in FRONT WIPER AND WASHER SYSTEM.