REAR WIPER AND WASHER SYSTEM
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Revision: August 20072004 QX56
REAR WIPER AND WASHER SYSTEMPFP:28710
Components Parts and Harness Connector LocationEKS007FO
System DescriptionEKS007FP
The wiper switch (combination switch) is composed of a combination of 5 output terminals and 5 input ter-
minals. Terminal combination status is read by the BCM (body control module) when switch is turned ON.
The BCM controls rear wiper ON and INT (intermittent) operation.
Power is supplied at all times
through 50A fusible link (letter f , located in the fuse and fusible link box)
to BCM terminal 70.
With the ignition switch in ON or START position, power is supplied at all times
through 10A fuse (No. 9, located in the fuse block J/B)
to combination switch terminal 14, and
through 10A fuse (No. 59, located in the fuse and relay box)
to BCM terminal 38.
Ground is supplied
to BCM terminal 67 and
to combination switch terminal 12
through grounds M57, M61 and M79.
REAR WIPER OPERATION
When the ignition switch is in the ON or START position, and the rear wiper switch is in the ON position, the
BCM detects a rear wiper ON request through the combination switch (wiper switch) reading function.
The BCM will first check the status of the glass hatch ajar switch before supplying power to the rear wiper
motor. If the glass hatch ajar switch is closed (ground) the BCM will not turn on the rear wiper motor. If the
glass hatch ajar switch is open (not grounded) the BCM will control the rear wiper motor as follows.
The BCM controls rear wiper motor operation by switching direction of current flow between the two rear wiper
motor output circuits.
WKIA3401E
