FUNCTIONS AND CONTROL OF SWS ECUS
SIMPLIFIED WIRING SYSTEM (SWS)
54B-13
REAR WIPER AND WASHER
.
Rear wiper control
If the rear wiper switch of the column switch assem-
bly is turned ON with the ignition switch in the ACC
or ON position, the ETACS-ECU will turn the rear
wiper drive signal ON for three seconds (approxi-
mately two operations), and then will carry out inter-
mittent operation in a 7.4 to 8-second cycle.
If the shift lever is moved to the "R" position when the
rear wiper switch of the column switch assembly is
turned ON and the ignition switch is in any position
other than OFF, the back up light switch "R" position
switch turns ON. One second later, the ETACS-ECU
turns the rear wiper drive signal ON for three sec-
onds (approximately two operations), to clear the
rear view, and then returns to intermittent operation
at a 7.4 to 8-second cycle.
.
REAR WASHER CONTROL
When the ignition switch is at the ACC or ON posi-
tion, if the rear washer switch of the column switch is
turned ON, the ETACS-ECU turns ON the rear
washer relay. The rear wiper drive signal is turned
ON in 0.3 seconds until three seconds after the rear
washer switch goes OFF to operate the rear wiper
continuously.
If the rear wiper is in intermittent operation when the
rear washer switch is turned ON, 7.4 seconds after
the rear wiper drive signal turns OFF, the 8-second
cycle intermittent operation will continue.
AC101553
T3 T3T4 T4 T4 T4T4
AF
T1 T1T2 T2 T2t
ON
ON
ON
OFF
OFF
OFF
REAR WIPER SWITCH
BACKUP LIGHT SWITCH
REAR WIPER DRIVE SIGNAL
t: 1 SECOND
T1: 7.4 SECONDS
T2: 8 SECONDS
T3: 3 SECONDS
T4: 0.6 SECOND
AC101554
AB
T1 T1
T2 T3
T4T4
t
ON
ON
ON
OFF
OFF
OFF
REAR WASHER SWITCH
REAR WASHER DRIVE SIGNAL
REAR WIPER DRIVE SIGNAL
t: 0.3 SECONDS
T1: 3.0 SECONDS
T2: 7.4 SECONDS
T3: 8.0 SECONDS
T4: 0.6 SECOND
T1
tt
WIPER SWITCH IN
OFF POSITION
WIPER SWITCH IN INT
OPERATION POSITION
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