|
|
|
120-5
POWER WINDOWS
Fuse C-18 applies battery voltage at all times to the left
front door power window and lock switch. The circuit
breaker C/B-2 applies battery voltage at all times to the
power window relay. With the starter switch in ON or
START, fuse C-4 applies battery voltage to the power
window relay. The power window relay energizes and
allows battery voltage from the circuit breaker to all the
door power window switches.
Left Front Window
When the left front door power window and lock switch
is moved to UP, a signal is sent to the control unit. The
control unit grounds the coil of the up relay. The con-
tacts of the relay close, and voltage is applied to the left
front power window motor. The motor’s ground path is
through the open contacts of the down relay. The motor
drives the window up as long as the switch is held.
When the switch is moved to DOWN, a signal is sent to
the control unit. The control unit grounds the coil of the
down relay. The contacts of the relay close, and voltage
is applied to the motor. The motor’s ground path is
through the open contacts of the up relay. The motor
drives the window down as long as the switch is held.
Auto Down
When the left front power switch is moved to AUTO, a
signal is sent to the control unit. The control unit
grounds the coil of the down relay. The contacts of the
relay close, and voltage is applied to the left front power
window motor. The motor’s ground path is through the
open contacts of the down relay. The control unit keeps
the relay energized until the motor drives the window to
the fully open position.
Passenger’s Window
The passenger windows can be operated from the left
front door power window and lock switch or the respec-
tive door power window switch. The passenger’s door
power window switches can only operate the windows
when the lock switch in the left front power window
switch is in the OFF position.
When a passenger’s door power window switch is
moved to UP, a signal is sent to the respective control
unit. The control unit grounds the coil of the up relay.
The contacts of the relay close, and voltage is applied to
the respective power window motor. The motor’s
ground path is through the open contacts of the down
relay. The motor drives the window up as long as the
switch is held. When the switch is moved to DOWN, a
signal is sent to the control unit. The control unit
grounds the coil of the down relay. The contacts of the
relay close, and voltage is applied to the motor. The mo-
tor’s ground path is through the open contacts of the up
relay. The motor drives the window down as long as the
switch is held.
When a passenger’s power window is being controlled
by the switch in the left front door power window switch,
the control unit in the left front door power window and
lock switch sends a multiplexed signal to the control
units in the other power window switches. The signal
tells the appropriate control unit to energize either the
up or down relay depending on the function requested.
Once the relay is energized, power is supplied to the re-
spective power window motor (see above paragraph)
and the motor drives the window in the proper direction
as long as the switch is held. Since the signal is multi-
plexed, more than one passenger’s window can be
controlled by the left front door power window switch si-
multaneously.
Circuit Operation
POWER SUNROOF
Dash Fuse Box
Power Window Relay
Sunroof Control Unit/Motor
Component Location Index
122
POWER SUNROOF
SUNROOF
CONTROL
UNIT/MOTOR
See Ground
Distribution,
page 14-1.
HOT IN ON OR START
HOT AT ALL TIMES
DASH
FUSE
BOX
C-4
ELEC. IGN.
15A
See Dash Fuse Box,
page 11-1.
BLU/WHT
BLU/WHT
C/B-2
(P/W, P/S, S/R)
30A
2
POWER
WINDOW
RELAY
4
BLK
1
3
BLU/BLK
BLU/BLK
SB41
Power
Windows
H-21
6
B-19
BLU/BLK
3
S-5
Close
Relay
Open
Relay
SUNROOF
SWITCH
CLOSE
OPEN
YEL/BLK
BLU/YEL
4
1
3
1
L-1
S-5
7
BLK
YEL/BLK
BLU/YEL
Control Unit
H-45
3
BLK/BLU
DASH
FUSE
BOX
YEL/BLK
BLU/YEL
2
1
H-45
Limit
Switch
See Dash Fuse Box,
page 11.
BLK/BLU
BLK/BLU
SB20
BLK
SB9
SB5
L-1
2
BLK
B-1
See Ground
Distribution,
page 14.
BLK
BLK
BLK
H-21
4
BLK
M
BLK
Motor
SL-2
H-45
6
BLK
Circuit Schematic
122-1
POWER SUNROOF
(Refer to Section 201 for photographs.)
Component
Photo No.
Dash Fuse Box
Behind left dash side trim panel
55
. . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Window Relay
In dash fuse box
56
. . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sunroof Control Unit/Motor
Rear underside of roof
88
. . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connector
H-21 (8-WHT)
Below I/P, above right dash side trim panel, on bracket
100
. . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . .
H-45 (6-BLK/WHT)
Center of roof, above map lights
85
. . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
L-1 (3-WHT)
Center of roof, above map lights
85
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ground
B-1
Above right dash side trim panel
116
. . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B-19
Behind top of left dash side trim panel
71
. . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Operation
When the ignition switch is in ON or START, the power
window relay is energized and applies battery voltage
to the sunroof control unit/motor. When you hold the
sunroof switch in the OPEN position, the “open” relay
energizes, supplying battery voltage to the sunroof
motor, and the sunroof opens to the partial open posi-
tion (least wind noise). At the moment the sunroof
reaches that position, the limit switch sends a signal to
the sunroof control unit, and the control unit stops the
roof. After you release the sunroof switch and hold it in
the OPEN position again, the sunroof motor opens the
roof the rest of the way, until it reaches its mechanical
limit. When you hold the switch in the CLOSE position,
the “close” relay energizes, supplying battery voltage to
the sunroof motor, and the roof closes to the partial
close position (safety stop). At the moment the sunroof
reaches that position, the limit switch sends a signal to
the sunroof control unit, and the control unit stops the
roof. After you release the sunroof switch and hold it in
the CLOSE position again, the sunroof motor closes the
sunroof the rest of the way until it reaches its mechani-
cal limit.
Component Location Index
|
|
|