brake light ISUZU TROOPER 1995 Manual Online

8-30 CHASSIS ELECTRICAL
Connector No.
Cable harness
Location Parts (load)
1jC-39I Windshield washer motor
21 C-391 Upshift-1 relay, Intermittent relay (Front)
31 C-391 Windshield wiper motor
41 C-39j Vehicle speed
sensor, Hazard warning switch,
Turn
signal indicator (Meter), Meter assembly
sl C-391 Fender-RH Headlight wiper timer, Headlight washer motor
Engine room
harness Engine Control Module (ECM)
main relay, Fuel
71 C-391 pump relay, Cruise control main relay, Cruise
control main switch, Air Conditioning relay,
Lockup off relay, Upshift-2 relay, Transmission-
1, 2 switch
al C-391 Vacuum pump and vacuum switching valve
I C-451 Rear wheel anti-lock controller
sl c-asl
Body-FRT Electronic brake control module, Data link
connector
I C-961 Front end Rear wheel
anti-lock valve
I E-281 Knock sEmsor module (DOHC), ECM, Oxygen
Common sensor (SOHC)
I E-291 chamber Knock sensor (DOHC), ECM, Oxygen sensor
(DOHC)
Engine
ECGI
I E-30 I harness Duct (DOHC) Ignition control
module
Common chamber
ECM, AfT Shift indicator control unit, Data link
I
E-311 (SOHC) connector, Knock sensor (DOHC)
~ Chassis harness Frame
Rear wheel anti-lock valve
11-391 Instrument
harness
Body-FRT Audio
IM-161 Transmission
Engine Transmission control module harness
Rear defogger
relay, Rear defogger, Tailgate
~
key switch, Tailgate lock actuator, Rear washer
motor, A:ear wiper and washer switch, Rear
wiper motor, Stoplight switch, Brake switch,
High
mount stoplight
Rear body Body-RR
harness Taillight, Stoplight, Stoplight switch, Brake
switch,
near turn signal light, Backup light,
~
Backup light switch, Mode switch, License plate
light, Lu!;)gage room light, Trailer harness con-
nector
(Stoplight, taillight), License plate light
~ DERM
00 SRS harness Body-FRT
DERM, Forward sensor, Inflator module (Driver
& passenger),
SRS coil assembly
•

I
8 -92 CHASSIS ELECTRICAL I
STOPLIGHT AND REAR DEFOGGER I
GENERAL DESCRIPTION i .-_
The circuit consists of the stoplight, stoplight switch (vehicles w/o cruise control), brake switch (ve~icles w/
cruise control), rear defogger, rear defogger switch, rear defogger relay and trailer harness conn~ctor for
stoplights. i
With the brake pedal depressed, the stoplight switch or the brake switch is turned on to illumi~ate the
stoplight. The brake switch controls not only the operation of the stoplight but also the input of th~ cruise
cancel signals to the cruise control unit. 1
When the rear defogger switch is turned on with the starter switch on, the battery voltage is applie to the
rear
defogger through the rear defogger relay to operate the rear defogger.
The rear
defogger switch is provided with a timer. When the operation time of the timer elapses w ich has
been set in advance at manufacture,
the switch is automatically turned off. (The timer operating time is
normally about 30 minutes).
OPERATION OF THE REAR DEFOGGER CIRCUIT
STARTER SW ..------,
BATTERY(+)
~----------------0
llJ,
f-®-
RR DEFOGGER
~
SW
~
>'f RR DEFOGGER ~~
RELAY "ON" :4r 2 1-
(When RR ?
defogger SW HON"I
~ [b
RR DEFOGGER
NOTE: Arrow marks II => II indicate the direction of current
Fig. 8-115
~
•

"T1 tO. 00 I _. ... 0>
(
H-7 H-25
,,
B-11
BRAKE
SW
(W/CRUISE
CONTROL)
STOPLIGHT
SW
(W/0
CRUISE
CONTROL) BATTERY
B-38
-
'I ,....., , lUI,).,.
FUSE
sox~
!C-4,
C-14,
C-17l
/
H-44
(
,RELAY
AND
FUSE
BOX
IFL-1,
FL-21
/
~----._
HIGH
MOUNT
STOPLIGHT
~-----
~
G-,~,
~-~------

-~,

I
"~
'

RRDEFOGGER
STOPLIGHT
(LHI
{RR
COMBINATION
LIGHT)
STOPLIGHT
(RHI
(RR
COMBINATION
LIGHT)
(
;g ::xJ ~ r-0 (') ~ -0 2
(') ::t l> en
en en m r­m ~ ::Jl ~ Cl) I CD w

8-96 CHASSIS ELECTRICAL
DIAGNOSIS
QUICK CHART FOR CHECK POINTS
1. Stoplight
~
Fuse Stoplight SW Stoplight c~ ble
C-14 (15A) or brake SW bulb har
ness
Tr
1-1 Both stoplights inoperative 0 0 p
(1) (3) (~)
1-2 Stoplight on the left (or right) side inoperative 0 )
(1) (2)
1-3 High mount stoplight inoperative )
( 1)
NOTE: Figure in parenthesis"( )" indicates the order of inspection.
2. Rear defogger
~·
Fuse
Rear Rear ~able C-4
C-17 defogger defogger Rear
Tr
(10A) (25A) sw relay defogger
harness
2-1 Rear defogger does not operate 0 0 0 0 0
0 ( 1) (2) (4) (3) (5) (6)
2-2 Rear
defogger timer does not function 0 (1)
NOTE: Figure in parenthesis"( )" indicates the order of inspection.
•

CHASSIS ELECTRICAL 8 -97
1-1 BOTH STOPLIGHTS INOPERATIVE
• IS FUSE C-14 (15A) NORMAL? I
l
l l
YES I NO l
I I
• IS [MJ SECURELY GROUNDED? I REPLACE THE FUSE l
I
I I
YES I NO I
I 1
• IS BATTERY VOLTAGE APPLIED TO 1 ~ (1 [[ill) GROUND IT SECURELY I OF THE STOPLIGHT SW (OR THE BRAKE SW)7
I
I I
YES I NO l
I I
• REMOVE THE STOPLIGHT SW (OR THE BRAKE SW). REPAIR A POOR CONNECTION AT CONNECTORS
• IS THERE ANY CONTINUITY BETWEEN 11 B-141 AND OR AN OPEN CIRCUIT BETWEEN THE FUSE C-14 (15Al
21 B-14I!OR 11 B-131 AND
4 ~ l OF THE SWITCH AND 1 I B-14 I (1 ~ ).
WHEN PUSH ROO IS OUT?
I
I I
YES I NO I
I T
• DOES THE PUSH ROD OF THE STOPLIGHT SW (OR THE REPLACE THE STOPLIGHT SW (OR BRAKE SW) . 1 BRAKE SW) OPERATE SMOOTHLY?
I
I I
YES I NO I
J -1
REPAIR A POOR CONNECTION OF CONNECTORS OR AN REPLACE THE STOPLIGHT SW (OR BRAKE SW). I OPEN CIRCUIT BETWEEN 21]}!] 141 B-131 lAND 10! H-321

8 -98 CHASSIS ELECTRICAL
1-2 STOPLIGHT ON THE LEFT (OR RIGHT)
SIDE INOPERATIVE
~
--
' "• IS THE STOPLIGHT BULB ON THE LEFT (OR RIGHT) SIDE NORMAL? l •
I
I
I
YES
j NO I
I I
• IS THERE ANY CONTINUITY BETWEEN
THE STOPLIGHT REPLACE THE BULB I CONNECTOR 5 []}] 15(]]] I AND 10 IH-32 I?
I
I I
YES
I NO I
J I
REPAIR A POOR CONNECTION AT CONNECTORS OR AN REPAIR A POOR CONNECTION AT CONNECTO qs OR
OPEN CIRCUIT BETWEEN 1 [[[) 11[[[) I AND []I) AN OPEN CIRCUIT IN THE CIRCUIT
1-3 HIGH MOUNT STOPLIGHT INOPERATIVE
• IS ["ill SECURELy GROUNDED? I .~
I
I I
YES
I NO I
I I
• REMOVE THE HIGH MOUNT STOPLIGHT
GROUND IT SECURELY I
• IS THERE ANY CONTINUITY BETWEEN THE HIGH MOUNT
STOPLIGHT CONNECTOR 1 []TI AND 2 ~
I
I I
YES
j NO I
I I
• IS THE BATIERY VOLTAGE
APPLIED BETWEEN 1W] AND REPAIR OR REPLACE THE HIGH MOUNT STOPLIG ~T I THE GROUND WHEN THE BRAKE PEDAL IS DEPRESSED?
I
I I
YES j NO I
I 1
• REPAIR A POOR CONNECTION AT THE CONNECTORS OR REPAIR A POOR CONNECTION AT THE CONNECT DRS
AN OPEN
CIRCUIT BETWEEN 2 ~AND []I] OR AN OPEN CIRCUIT BETWEEN 1 [§TIANO 1 W±ill
~
•

STARTER SWITCH
Refer to "START AND CHARGING" in this section.
'-' STOPLIGHT SWITCH (FOR VEHICLES
W/0 CRUISE CONTROL)
~ INSPECTION
1. Check to see if the stoplight switch is installed
correctly
to the specified position. Adjust the
position when the result
of the inspection is
found abnormal.
·
2. Check to see if there is any continuity between
the terminals
of the stoplight switch. (Fig. 8-119)
Replace the switch when the result of inspection
is found abnormal.
t[J I B-141
-----==== Terminal No.
SW position
--Depress brake pedal (Push rod out)
Release brake pedal (Push rod in)
Fig. 8-119
B REMOVAL (FIG. 8-120)
1
2
0.: -o
Preparation: Disconnect the battery ground cable.
1. Stoplight switch
• Disconnect the connector.
• Loosen the lock nut of the switch.
• Remove the switch by turning it.
Lock nut 1. Stoplight switch
Fig. 8-120
CHASSIS ELECTRICAL 8-101
B INSTALLATION
To install, follow the removal steps in the reverse
order, noting the
following points.
1. Check to see if the brake pedal has been returned
by the return spring to the specified position.
2. Turn the stoplight switch clockwise until the tip
of the threaded portion of the switch contacts the
pedal arm.
3. Turn the switch counterclockwise until the space
between the
tip of the threaded portion and the
pedal arm is
0.5 to 1.0mm (0.02 -0.04in.)
(Fig. 8-121)
0.5-1.0mm (0.02·0.04in} Stoplight switch
Fig. 8-121
BRAKE SWITCH (FOR VEHICLES WI
CRUISE CONTROL)
~ INSPECTION
1. Check to see if the brake switch is installed
correctly
to the specified position. Adjust the
position
if the result of inspection is found
abnormal.
2. Check to see if there is any continuity between
the terminals
of the brake switch. (Fig. 8-122)
Replace the switch
when the result of inspection
is
found abnormal.
2 1
Pu•h ~·· lB·13l
4 3 -..
~0. SWp 1 2 3 4
Stoplight Depress
brake pedal
(push rod out)
Cruise Release brake pedal
o-f-o control (push rod in)
Fig. 8-122

8-102 CHASSIS ELECTRICAL
B REMOVAL (FIG. 8-123)
Preparation: Disconnect the battery ground cable.
1. Brake switch
• Disconnect the connector
• Loosen the lock nuts of the switch.
• Remove the switch by turning it.
Fig. 8-123
B INSTALLATION
1. Brake switch
To install, follow the removal steps in the reverse
order, noting the
following points.
1. Check to see if the brake pedal has been returned
by the return spring to the specified position.
2. Turn the switch clockwise until the tip of the
threaded
portion ofthe brake switch contacts the
pedal arm.
3. Turn the switch counterclockwise until the space
between the
tip of the threaded portion and the
pedal
arm is 0.5 to 1.0mm (0.02-0.04in.).
(Fig. 8-124)
0.5-1.0mm (0.02-0.04in)
Fig. 8-124
STOPLIGHT BULB
Refer to "Front side marker light, Parking light, Tail
light, License plate
light and Illumination light" in
this section.
HIGH MOUNT STOPLIGHT
EJ REMOVAL (FIG. 8-125) ~
Preparation: Disconnect the battery grou d cable.
1. High mounts oplight
Fig. 8-125
1. High mount stoplight
• Remove the clips.
• Pull out the high mount stoplight.
• Remove the connector.
B INSTALLATION (FIG. 8-126)
Clip !Side face) 1. High mount st plight
Fig. 8-126
1. High mount stoplight
• Insert the clips into the high mount sto light.
• Reconnect the connector.
• Install the high mount stoplight.
•

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