headlight bulb ISUZU TROOPER 1995 Workshop Manual

CHASSIS ELECTRICAL 8-1
·SECTION 8
CHASSIS ELECTRICAL
'\f CAUTION: .
When fasteners are removed, always reinstall them at the same location from which they were removed.
If a fastener needs to be replaced, use the correct part number fastener for that application. If the correct
part number fastener is not
available, a fastener of equal size and strength (or stronger) may be used.
Fasteners that are not reused, and those requiring thread
locking compound, will be called out. The correct
torque
values must be used when installing fasteners that require it. If the above conditions are not
followed, parts or system damage could result.
CONTENTS
General Information .................................... 8-2
Notes for Working on Electrical
Items .................................................... 8-2
Symbols and Abbreviations ................. 8-8
Symbols ............................................ 8-8
Abbreviations ................................... 8-9
Parts for Electrical Circuit ..................... 8-10
Wiring ............................................... 8-10
Fuse .................................................. 8-11
Fusible Link ....................................... 8-12
Circuit Breaker ................................... 8-12
Relay ................................................. 8-12
Relay Specifications and
Configurations ................................ 8-13
Diode ................................................. 8-14
Connector ......................................... 8-15
Reading the Circuit Diagram ................ 8-17
Main Data and Specifications .................... 8-19
Bulb Specifications ................................ 8-19
Fuse,
Fusible Link and
Circuit Breaker Location ..................... 8-21
Fuse
Block Circuit .................................. 8-22
Reference Table of Fuse, Fusible
Link and Circuit Breaker ..................... 8-23
Relay Location ....................................... 8-27
Diode Location .......................................
8-28
Grounding Point .................................... 8-29
Reference Table ................................ 8-29
Location ............................................ 8-31
Cable Harness Routing .......................... 8-34
System Repair .............................................. 8-38
Start and Charging ................................ 8-38
Engine Control Module
(ECM) ................................................... 8-47
Headlight and Fog Light ........................ 8-58
Front Side Marker Light, Parking Light,
Taillight, License Plate Light and
Illumination Light .............................. 8-76
Stoplight and Rear Defogger .............. 8-92
Turn Signal Light, Hazard
Warning
Light, Cornering Light,
Backup
Light and Horn ..................... 8-106
Dome Light, Luggage room Light,
Courtesy Light, Map Light,
Seat Belt Switch and
Warning Buzzer ................................. 8-128
Power Door Lock ................................. 8-142
Power
Window .................................... 8-156
Cruise
Control ...................................... 8-172
Anti-Lock Brake
System (ABS) ........... 8-178
Rear
Wheel Anti-Lock Brake
System (RWAL) ................................. 8-185
Transmission
Control Module
(TCM) ................................................. 8-192
A/T Shift Lock ...................................... 8-200
Windshield
Wiper/Washer and
Rear
Wiper/Washer .......................... 8-205
Headlight wiper /washer ..................... 8-232
Audio, Auto Antenna,
Cigarette
Lighter and digital clock ... 8-246
Power Door Mirror ............................... 8-254
Anti-theft System ................................ 8-270
Meter and Warning/Indicator Light ... 8-288
A/T Shift Indicator ............................... 8-336
Heater and
Air Conditioning ............... 8-340
Sun
Roof ............................................... 8-346
Power Seat ........................................... 8-360
Seat
Heater .......................................... 8-37 4
Supplemental Restraint
System (SRS) -AIR BAG ................... 8-382

CHASSIS ELECTRICAL 8-19
MAIN DATA AND SPECIFICATIONS
BULB SPECIFICATIONS
DOME LIGHT
MAP LIGHT LUGGAGE ROOM LIGHT HIGH MOUNT STOPLIGHT
FOG LIGHT HEADLIGHT
Light Name
Bulb No.
Headlight
9004
Front Turn
signal light/ 1157 Parking light combination Side marker light 194 light Cornering light 1156
Fog Light
-
Rear Taillight/Stoplight 1157
Combination Turn signal
light 1156
light Backup light 1156
High
mount stoplight -
License plate light -
Map light -
Dome light -
Luggage room light -
Courtesy light 194
Air conditioning Sw -
-
RR defogger Sw -
Anti-theft -
Indicator/ Check
Trans 74
Warning light A/TOIL TEMP -
Seat heater Sw -
Mirror defogger Sw -
Fog light Sw -
Cruise 80
Cruise (Main) 80
""·
,/
REAR COMBINATION LIGHT
Rated Power Number
of Bulbs
65w/45w 2
27w/8w 2
3.8w 2
27w 2
55w 2
8w/27w 2
27w 2
27w 2
-84
5w 1
5w 2
10w 1
8w 1
3.8w 4
60mA 1
60mA 1
SOmA 1
3 1
1.4w 1
3w 1
60mA 2
0.94w 1
60mA 1
2w 1
2w 1
Fig. 8-43
\BACKUP LIGHT
TAIL & STOPLIGHT
Lens Color Remarks
White Halogen
White
Amber
White
White Halogen
Red
Amber
White
Red LED
White
White
White
White
White
w/oTimer
w/Timer
Warning box
Warning box
Warning box
Indicator box
Indicator box

8-20 CHASSIS ELECTRICAL
Light Name Bulb No. Rated Power Number Lens Color Remarks of Bulbs
Power Drive 74 1.4w 1
Meter
Winter Drive 74 1.4w
1 Meter
Turn Signal 74 1.4w 2 Meter
Upshift
74 1.4w 1 Meter
High Beam
74 1.4w 1 Meter
ABSorRWAL 74 1.4w 1 Meter
Indicator/ Seat Belt 80 2w 1 Meter
Warning Malfunction Indicator 74 1.4w
1 Meter
Light (Check
Engine)
Low Fuel 74 1.4w 1 Meter
4WD
74 1.4w 1 Meter
Oil pressure 74 1.4w 1 Meter
Brake System 74 1.4w 1 Meter
Charge 74 1.4w 1
meter
A/T Shift Position -0.91w 7 Meter
AIR BAG 80 2w 1 Meter
Lighting Sw -SOmA 1
Fog Light
Sw -SOmA 1
Glove Box -1.2w 1
Ashtray
74 1.4w 1
Illumination
60mA 1 -Controller
Heater Bezel 74 1SOmA 2
Windshield
Wiper SOmA 1 -/WasherSw
Hazard Warning SOmA 1 -Light Sw
Illumination Meter 158 3.4w 4 MeterASM
Light
Cigarette Lighter
74 1.4w
1
Select Lever -1.4w 1
Rear
Wiper/ 60mA 1 -WasherSw
Rear Defogger Sw -SOmA 1
Door
Mirror Sw -45mA 2
Headlight
wiper Sw -SOmA 1
Power/Winter
Sw -SOmA 2
Cruise Control
SOmA 1 -Main sw
II

8-62 CHASSIS ELECTRICAL
DIAGNOSIS
QUICK CHART FOR CHECK POINTS ~ )-; '. ·'·• 1. Heaplight 1:·
~
Fuse Lighting Lighting Dimmer• Headlight c ~ble Passing bulb F-4
F-5 relay sw ha ness
T
(15A) (15A) sw LH RH
1-1. Both Headlights inoperative 0 0 0 b (1) (3) (4) 2)
1-2. Headlight on
the left (or 0 0 0
0 b right) side inoperative (1) ((1)) (2) ((2)) 3)
1-3. Headlights in low-beam 0 b inoperative (1) 2)
1-4. Headlights in high-beam 0 b inoperative
(1) 2)
1-5. Headlight beam does not 0 p
change (1) 2)
1-6. Headlights remain on 0 0 b when the lighting switch is
( 1) (2) 3) turned off
1-7. Headlights come on with 0 ~ the lighting SW at the
parking light position (1)
NOTE: Figure in parenthesis"( )" indicates the order of inspection.
2. Fog light
~
Fuse
Fog light Fog light Fog light Cc ble F-8 bulb
(15A) relay switch LH RH har ness Tr
2-1. (While the headlight is on in low-beam) 0 0 0 c ~ Both
fog lights are inoperative (1) (2) (3) ( )
2-2. (While the headlight is
on in low-beam) 0 0 CD Fog light on the left (or right) side is
( 1) ( ( 1)) ( ) inoperative
NOTE: Figure
in parenthesis"()" indicates the order of inspection.
~ -'
..

8 -64 CHASSIS ELECTRICAL
1-2. HEADLIGHT ON THE LEFT (OR RIGHT) SIDE INOPERATIVE
• IS THE FUSE F-4 (15A) (OR F-5 15Al NORMAL?
I
I
YES I
I
• IS THE HEADLIGHT BULB ON THE LEFT (OR RIGHT)
SIDE NORMAL?
I
I
YES I
I
I
REPAIR A POOR CONNECTION AT THE CONNECTORS OR
AN OPEN CIRCUIT BETWEEN FUSE F-4 (15Al AND
3~(0R FUSE F-5 115Al AND 3WUI
I
I NO I
I
I REPLACE THE FUSE
I
I NO I
I
I REPLACE THE BULB
I
I
1-3. HEADLIGHTS IN LOW-BEAM INOPERATIVE
• REMOVE THE CONNECTOR DIMMER•PASSING SW (COMBINATION SW)
• WITH
THE SWITCH AT THE LOW-BEAM POSITION, IS THERE CONTINUITY BETWEEN THE SW CONNECTOR
TERMINALS
13[[I[jAND 16[[1[]
I
I
YES I
I
REPAIR A POOR CONNECTION AT THE CONNECTORS OR
AN OPEN CIRCUIT BETWEEN 13[[ll]AND 10~
I
I NO I
I
I REPAIR OR REPLACE THE DIMMER•PASSING S1tJ I

8-68 CHASSIS ELECTRICAL
2-2. (WHILE THE HEADLIGHT IS ON IN LOW-BEAM) FOG
LIGHT
ON THE LEFT (OR RIGHT) SIDE IS INOPERATIVE
• IS THE FOG LIGHT BULB NORMAL?
I
I
YES I
I
REPAIR A POOR CONNECTION AT THE CONNECTORS OR A OPEN CIRCUIT BETWEEN 2 WU AND 6~(0R 2~AND 6[f}[]l
I
I NO I
I
l REPLACE THE BULB
NOTE: Connectors in parenthesis"()" indicates the check point of the fog light-RH.
I
•

DIMMER·PASSING SWITCH (COMBI­
NATION SWITCH)
The headlight beams can be turned to high and low
alternately by pulling the switch lever up to the limit.
Also, the passing light can be flashed by operating the
switch lever within the range before the dimmer
switch has been changed over. The switch lever
returns automatically to its original position.
CHASSIS ELECTRICAL 8 -71
~ INSPECTION
lt!l Check the continuity between the terminals of
the dimmer passing switch. (Fig. 8-85)
Repair
or replace the switch when the result of
inspection is found abnormal.
~· s 16 13 15 14
At "Dimmer" position HI ~ ~ -
LO o-f-o
At "Passing" position ~ ~ ~
Fig.
8-85
E] REMOVAL AND INSTALLATION
Refer to the removal and installation steps oft he
LIGHTING SWITCH (COMBINATION SWITCH) in
this section.
HEADLIGHT BULB
The headlight bulb can be replaced with a halogen
bulb.
E] REMOVAL (FIG. 8-86)
Preparation: Disconnect the battery ground cable.
1. Headlight bulb
• Disconnect the connector.
• Remove the cap while turning it counter
clockwise.
• Pull the bulb out from the headlight body.
1. Headlight bulb
Fig. 8-86
W CAUTION:
The halogen bulb develops a very high
temperature. Do not touch the glass portion. If
any stain is on the glass surface, it will scorch and
the glass will be damaged.
B INSTALLATION
To install, follow the removal steps in the reverse
order.

8 -72 CHASSIS ELECTRICAL
HEADLIGHT
E) REMOVAL (FIG. 8-87)
Preparation: Disconnect the battery ground cable.
Fig. 8-87
1. Front combination light
• Remove the screw and pull out the two pro­
jecting
portions on the fender side.
2. Radiator grille
• Remove the 5 clips and 2 screws.
3. Front end lower panel
• Remove the two screws.
4. Headlight assembly (with bracket)
• Remove the four bolts and two nuts.
5. Headlight bulb
• Refer to the headlight bulb removal steps in
this section.
6. Bracket
• Remove the two screws and two nuts.
• Remove the spring for the headlight aim
adjustment.
7. Rear cover
• Remove four screws.
8. Headlight rim
9. Headlight
E3 INSTALLATION
To install, follow the removal steps in the reverse
order.
W CAUTION:
After installing the headlight, be sure to adjust
the headlight aim.
(E AIMING OF HEADLIGHT
Preparation: Place the unloaded vehicle on a level
surface and check to see ifthe inflation pressur oft he
tires is correct, the lenses are clean, and the b ttery is
sufficiently charged.
Adjust the aim with th head­
light tester, if necessary. (fig. 8-88)
When adjusting,
follow the procedure of th tester
manufacturer's.
Fig. 8-88
1~1 .... 1 Vertical adjustment
Use a screwdriver for vertical adjustmen . (Fig.
8-89)
Fig. 8-89
m .... l Horizontal adjustment
Use a screwdriver for horizontal adjust ent.
(Fig.
8-90)
..

8 -136 CHASSIS ELECTRICAL
MAP LIGHT SWITCH/BULB
~ INSPECTION
~~~ Check to see if there is any continuity between
the terminals and the body while operating the
map light switch.(Fig.8-171)
Repair
or replace the switch when the result of
inspection is found abnormal.
I" ~ [IT]
ron
0~/~ ~
'
~· 1 Body
n
ON 0 {)
OFF
Fig. 8-171
B REMOVAL
E) INSTALLATION
To install, follow the removal steps in the everse
order.
SEAT BELT SWITCH
~ INSPECTION
I~ l Check to see if there is any continuity b tween
the terminals of the seat belt switch. (Fig 8-173)
Replace the switch when the
result of ins ection
is found abnormal.
Switch operation
ON (unfasten the seat belt)
OFF (fasten the seat belt)
Preparation: Disconnect the battery ground cable. Fig. 8-173
Fig. 8-172
1.
Map light switch
• Pull the map light body downward to release
the
lock. (Fig. 8-172)
• Disconnect the connectors of the map light
and the sun roof switch.
2. Socket/bulb
• Turn the socket counterclockwise to remove
it.
3.
Bulb
• Pull out the bulb from the socket.
B REMOVAL AND INSTALLATION
1++1 Refer to Section 10 "BODY", for "SEAT ELT"
removal and installation steps.
WARNING BUZZER
The warning buzzer sounds to remind the dr ver to
fasten seat belts, if the key was left in the tarter
switch,
or if the headlights were left on. (Fig. -174)
Seat belt warning light
Seat belt
sw
Starter sw
8
Warning buzzer
DoorSW (Driver
side)
Fig. 8-174
..

DIAGNOSIS
DIAGNOSIS PROCEDURE
.......,. 1. Check to see ifthe battery voltage is normal.
2. Check to see if the fuse is normal.
CHASSIS ELECTRICAL 8 -275
3. Replace the anti-theft controller with one reserved for test. If a trouble recurs even after replacing the
controller, find
out the cause of the trouble by referring to "System check procedure" and the following list.
Item Malfunction
Possible
cause Detecting method Remarks
Defective
contact of door switch,
With door open, dome light and Burnt
out indicator
ANTI-THEFT or open circuit in door switch courtesy light do not come on. light bulb possible.
indicator light wiring.
A does
not flash Short circuit in the detect switch.
Check controller connector. Refer to "Connector check procedure" in
this system.
Engine hood, doors and
tailgate Check to see if doors are closed are not fully closed and locked. and locked.
Defective door switch, or short Dome light and courtesy light circuit in switch wiring.
remain lit on after closing doors.
Indicator light Defective tamper switch, or short Check controller connector. Refer
to "Connector
does not circuit in wiring. check procedure" in
change to
fully this system.
B
ON condition, Defective lock switch, or short Check controller connector. Refer
to "Connector or does not come on at all circuit in wiring. check procedure" in
this system.
Defective engine hood switch, or Check
controller connector. Refer
to "Connector
short circuit in wiring. check
procedure" in
this system.
Defective
tailgate switch, or short Luggage room light remains lit circuit in wiring. after closing tailgate.
ANTI-THEFT
Defective controller.
c indicator light
does not turn off.(Steadily on) Poor contact
of lock switch, or Check alarm operation (See
When
door is open
circuit in wiring. No. 46 of "System
check procedure," possible cause
opened by
is a poor contact of lock switch or D pulling up
a open circuit in wiring. locking knob, alarm does not Broken wire in wiring to headlight Check to see if headlights go Refer
to "Connector operate
and horn, or a blown fuse. out. check procedure" in
Check
controller connector. this
system.
Alarm does not Defective contact of detect switch, Check controller connector.
Refer to "Connector
E
stop. or damaged switch wiring. check procedure" in
this system.
Even when
door Defective contact of detect switch, Check controller connector. Refer
to "Connector
unlocked
or damaged switch wiring. check procedure" in
F
with key, alarm this system.
operates. Door detect switch is
assembled When key is turned to lock posi-
to
wrong door. tion, alarm stops.