ISUZU TROOPER 1995 Workshop Manual

REAR -RIGHT SIDE
~ INSPECTION
Before checking the motor, be sure to start checking
the rear
power window switch (right) harness side
connector
I D-271 and the circuit between front power
window switch-LH/power window relay and the rear
power window switch-RH.
If the motor will not operate correctly, either the
motor or the circuit are defective.
1. Circuit inspection of the rear window
switch -right side
Disconnect the switch connector and apply
battery voltage
to the harness side connector ter­
minals to check its function. (Fig. 8-220)
~
~
Harness side
Connecting terminal
Direction
of
5 (L/R) 6 (BR/R) Operation
1,+1 1.- UP
(-1 I+) DOWN
Fig. 8-220
2. Circuit inspection between front power
window switch-LH/power window relay
and rear
power window right side switch
1. Disconnect the rear power window switch­
RH connector I D-271 .
2. Check to see if battery voltage applied at
41 D-271 , 21 D-271 and the ground when starter
switch is
"ON" position.
Repair a poor connection
of the connectors or
an open circuit between 410-271 and 1IH-35I,
2lo-21l and 2IH-34I.
3. Inspection of the rear window motor -
right side
Disconnect the motor connector and apply
battery voltage
to the motor side connector
terminals
to check its function. (Fig. 8-221)
Repair or replace the motor when the result of
inspection is found abnormal.
CHASSIS ELECTRICAL 8-171
D~
. TerminaiNo. 1rect1on
of operation
DOWN
UP
Fig. 8-221
1
ci)
8
1••1 REMOVAL AND INSTALLATION
2
l••l Refer to the removal and installation steps of
the rear power window motor-left of this
section.
POWER WINDOW RELAY
~ INSPECTION
lt!!.l Check to see if there is any continuity between
the relay terminals. (Fig.
8-222)
When the result of inspection is found
abnormal, replace the relay.
®-@ ....... No continuity
(When applying battery voltage between
CD and
@)
®-@ ....... No continuity
Note:
For the relay removal, refer
to "Connector
Handling"
under "NOTES FOR WORKING ON
ELECTRICAL ITEMS"
in this section.
Fig.
8-222

8 -172 CHASSIS ELECTRICAL
CRUISE CONTROL
GENERAL DESCRIPTION
The circuit consists of the starter switch, cruise main switch, control switch, control unit, pump and actuator,
brake switch, clutch switch (M/T),
mode switch (Nf), vehicle speed sensor (incorporated into speedometer),
and indicator lights.
The cruise
control system keeps the vehicle running at a fixed speed until a signal canceling this speed is
received.
When the vehicle is in a running state with the main switch on, the battery voltage is applied to the control
unit. When a signal from the control switch is input into the control unit, while the vehicle is in this state, the
cruise control actuator is activated
to operate the system.
Also,
while the system is operating, the "AUTO CRUISE" indicator light in the instrument panel cluster lights
up.
Refer
to Section 98 "CRUISE CONTROL" for detail.
OPERATION OF CRUISE CONTROL MAIN SW AND CRUISE MAIN RELAY
1. Main SW is at ON position
for an instant after being
pressed
CRUISE MAINSW
n m
OFF OFF
~~ . !-':··a··---
~: 0 ON NON
n~
£Jr
CRUIS MAIN ~ELAvl .c~ I
n n(b
-
STARTERSW
¢:!)
fi
2. Main SW returns to
NEUTRAL position from
ON position instantly
CRUISE MAINSW
CRUISE MAIN RELAY
STARTERSW
NOTE: Arrow marks H c:::::> H indicate the direction of current
Fig. 8·223
3. Main SW returns to
NEUTRAL position from
OFF position after being
set
to OFF
CRUISE MAINSW
CRUISE MAIN RELAY
STARTERSW
..

"TI ~· 00 I N N .,..
(
(
1-10 VEHICLE
SPEED
SENSOR
(METER!
CRUISE
CONTROL
SW,
CRUISE
CANSEL
SW,
(COMBINATION SWl
CRUISE
MAIN, AUTO
CRUISE
INDICATOR
LIGHT
'"
CLUTCH
PEDAL
(MfTI
BRAKE
PEDAL
RELAY
& FUSE
BOX
(FL-1
FL-2) PUMP
& VSV-------__
BATTERY
. '/
)",...
H-41
CRUISE
CONTROL
UNIT
·""·

'~~/{' /l/
'
4/
·,,_
DIODE
B-45
FUSE
BOX
(C-3,
C-4,
C-10,
C-14)
CRUISE
CONTROL
MAIN
SW
(
~ ::u ~ r-0 (") ~ 0 z
0 ::t > (/) (/) a; m ,.. m !l ::D 0 )> r­eo I ... ..... w

8-174 CHASSIS ELECTRICAL
CIRCUIT DIAGRAM
+ BB/R
B
~
sa
=
=
~~~ BODY ENG. FRAME
CRUISE INDICA TOR !INDICATOR BOX)
{II FENDER-RH II
BODY-RH II
BODY-LH II
FENDER-RH II
&W
C-10
10A ME'IIOR, GAUGE
10
C-1' &W sw 15A STOP, AfT CONT
STAR'IIORSW
38('(
O.&Lm ,-----------'-"--'--1-------1 H-25!------'
0.58
8-8
CRUISE ODNTROL UNIT
0.85 G/W
O.SLNJ
~ "' II! 0
~ :
~ g
ECM: ENGINE CONTROL MODULE, TCM: TRANSMISSION CONTROL MODULE
Fig. 8-225
IM/T) r---r--,
..
"' 1:1 0
;: .. :r ~ 1:> ld I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
~I
I I
I
I
I
I
I
~ I
I .. I 0
12
~ .: u
5
•

CONNECTOR LIST
: I
Fig. 8-226
CHASSIS ELECTRICAL 8 -175
~
~

j -
8-176 CHASSIS ELECTRICAL
[till [EJ[}=IJ [ill [E) [IT] I P-10 I I X-201
• II
:::::o::Q) n=Q) lilil 4 -6
Fig. 8·227

CHASSIS ELECTRICAL 8-177
MEMO

8 -178 CHASSIS ELECTRICAL
ANTI-LOCK BRAKE SYSTEM (ABS)
GENERAL DESCRIPTION
The circuit consists of the starter switch, stoplight switch (vehicle w/o cruise control), brake switch (vehicle
with cruise control), hydraulic unit, electronic brake control module, wheel speed sensor, G sensor, ABS and
4WD indicator, 4WD switch and data link connector.
When the service brake is applied while in the running mode,
the EBCM (Electronic Brake Control Module)
judges
which wheel is about to lock by using the wheel rotation speed signals sent from the four ABS speed
sensors at the
front and rear wheels. And the brake fluid pressure applied to the four wheels is controlled by
a hydraulic unit to prevent the wheels from locking.
Based on the wheel rotation speed signals
input from the ABS sensor, the EBCM sends out signals to the
solenoid valve in the hydraulic unit
to increase, maintain or decrease the brake fluid pressure. The solenoid
valve uses this signal
to control the fluid pressure which is applied to the calipers of the disk brakes of the
front wheels. (The system also controls at the same time the fluid pressure applied to the rear wheels.)
• EBCM (Electronic brake control module)
The EBCM uses the signals sent from the speed sensor to control the operation of the hydraulic unit.
When any malfunction occurs in the ABS, the
EBCM activates the fail-safe fuction while turning on the
ABS warning light.
• Hydraulic unit
The hydraulic unit consists of the motor, plunger pump, solenoid valve, and fluid pressure control
valves. The exterior
of the unit has a relay box consisting of the motor relay and valve relay. Three
solenoid valves, the
two of which are provided at the front wheels and the one at the rear wheels, control
the fluid pressure
of these wheels.
• Speed sensor
The speed sensor consists of the sensor and the rotor. It sends the EBCM the AC voltage generated by
the rotation of the rotor as the vehicle speed signal. ~
• G-sensor
The G-sensor, installed inside the center console, sends out signals to the EBCM by detecting the
decelerating speed
of the vehicle.
• ABS warning light
The ABS warning light in the instrument panel, lights up when any malfunction occurs in the ABS. It also
lights up
with the starter key at the "ON" position, as a self-check.
Refer
to Section 5A4, "ANTI-LOCK BRAKE SYSTEM" for detail.
II

::!! (Q 00 I N N 00
(
EBCM
RR
ABS
SPEED
SENSOR
(RHI
RELAY:
UPSHIFT-2
C-33 C-34
(
(
STARTERSW RR
ABS
SPEED
SENSOR
ILHI
C-94 DATA
LINK
CONNECTOR
GSENSOR
FUSE
BOX
(C-3,
C-4,
C-10,
C-141
BRAKE
SW
(W/CRUISE
CONTROL)
STOPLIGHT
SW
IW/0
CRUISE
CONTROL)
FRT
ABS
SPEED
SENSOR
ILHI
~ :a -t CJ) r-0 (") ~ 0 z
(") :::t ln en (i) m r­m ~ :;g n ~ r-eo I ..a ..... CD

8-180 CHASSIS ELECTRICAL
CIRCUIT DIAGRAM - 1
111111 +
~
~
= =
= ~~P.1ol~ BODY ENG. FRAME
FENDER II -I.H
ID :1
C·3' 10
s .. 0
a: ~ " Ill 0 .. 0
IW
~ .. 0
C-1, IW IW 15A ITOP, AfT CONT H·1'
~ ..
3W/G
~ ..
o.sw
~ 0 ~ "l 0 ~
E B C M !Eioctronic Broke C......,. M-1
10~~ II C-81 1---------------_._ ____ _.1--_.l---------'
DATA LINK ~CTOR
>-.. 0
• H·2'
31: :1
31: .. 0
o.IIGIW
~ lOA ILIC. ION. O.IL/W
INDICATOR UGHT MTPI
11
" _, .. 0
,,
H·l'
~ UGlY .. 0 (M/TJ ------.
.. ~ IIIII 0"' :;
• H-10
• !
' ' '10
IH-:101
FEN~= II C-1111"-----------------------------------------------..J
Fig. 8-229
•