lights ISUZU TROOPER 1995 Owner's Manual

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

CHASSIS ELECTRICAL 8 .... 65
1-4. HEADLIGHTS IN HIGH-BEAM INOPERATIVE
• DISCONNECT THE CONNECTOR DIMMER•
PASSING SW (COMBINATION SWl
• WHIT THE SWITCH AT HIGH-BEAM, IS THERE
CONTINUITY BETWEEN THE SW CONNECTOR TERMINALS
15~AND16~7
I
I I
YES I NO I
I I
REPAIR A POOR CONNECTION AT THE CONNECTORS REPAIR OR REPLACE THE DIMMER•
OR AN BROKEN WIRE BETWEEN 15[[]IJAND 16[Jf[J PASSING SW
1-5. HEADLIGHT BEAM DOES NOT CHANGE
• DOES THE LEVER OF THE DIMMER•PASSING SW
OPERATE SMOOTHLY AND SECURELY?
I
I I
YES I
I NO I
I I
• DISCONNECT THE CONNECTOR OF THE DIMMER PASSING I REPAIR OR REPLACE THE DIMMER•PASSING sw J sw.
• WITH THE SWITCH AT THE LOW-BEAM POSITION, IS THERE CONTINUITY BETWEEN 13[[g] AND 16(]]U 1 ALSO, WITH IT AT THE HIGH-BEAM POSITION, IS THERE CONTINUITY BETWEEN 15(]]UAND 16 []}[) 1
I
l
I NO I
I
l REPAIR OR REPLACE THE DIMMER•PASSING SW J

8 -66 CHASSIS ELECTRICAL
•
•
•
1-6. HEADLIGHTS REMAIN ON WHEN THE LIGHTING
SW IS TURNED OFF
IS THE LIGHTING RELAY NORMAL? I
I
I I
YES I I NO J
I I
DISCONNECT THE CONNECTOR OF THE LIGHTING SW I REPLACE THE LIGHTING RELAYI
IS
THE CONTINUITY BETWEEN THE SWITCH CONNECTOR
TERMINALS 1ITI[J AND 7[[ITJ NORMAL?
I
I I
YES I
I NO I
I I I I
REPAIR A SHORT CIRCUIT BETWEEN
5
ITI]AND1~ I REPAIR OR REPLACE THE LIGHTING sw I
1-7. HEADLIGHT COME ON WITH THE LIGHTING SW
AT THE PARKING LIGHT POSITION
I REPAIR OR REPLACE THE LIGHTING sw I
..

•
•
•
•
•
CHASSIS ELECTRICAL 8-67
2-1. (WHILE THE HEADLIGHT IS ON IN LOW-BEAM}
BOTH FOG LIGHTS ARE INOPERATIVE
IS FUSE F-8 (15A) NORMAL? I
I
I I
YES I NO I
I j
IS THE FOG LIGHT RELAY NORMAL? I REPLACE THE FUSE I
I
I j
YES I NO I
I I
REMOVE THE FOG LIGHT SW REPLACE THE FOG LIGHT RELAY I
WITH THE SWITCH ON, IS THERE CONTINUITY BETWEEN
THE SW CONNECTOR TERMINALS sc:::E[J AND 4[}[]7
I
I I
YES I NO j
I J
IS THE BATTERY VOLTAGE APPLIED BETWEEN THE FOG REPAIR OR REPLACE THE FOG LIGHT sw I
LIGHT SW HARNESS SIDE CONNECTOR sill] AND THE GROUND?
I
I I
YES I NO I
I I
REPAIR A POOR CONNECTION AT THE CONNECTORS OR REPAIR A POOR CONNECTION AT THE CONNECTORS
AN OPEN CIRCUIT BETWEEN 4[}[]AND 16 [[ill OR AN OPEN CIRCUIT BETWEEN FUSE F-4 (15AI
AND 31 x-23 loR 1 Wi] AND s DD

LIGHTING SWITCH (COMBINATION
SWITCH)
The lighting switch has OFF, PARKING and HEAD­
LIGHT positions. The Parking position is used to light
up the front side marker light, parking light, taillight,
license
plate light, and each illumination light. When
the headlight position, the headlight, in addition
to all
the lights mentioned above, is turned on through the
lighting relay.
CHASSIS ELECTRICAL 8-69
~ INSPECTION
I til Check the continuity between the connector ter­
minals
while operating the switch knob.
(Fig. 8-81)
Replace the switch when the result
of inspection
is found abnormal.
Terminal No.
SW position 1 7 8
~D
OFF
Fig. 8-81
B REMOVAL (FIG. 8-82)
Preparation: Disconnect the battery ground
cable.
4
2
Fig. 8-82 1.
Instrument panel driver lower cover
• Refer to the
removal steps of the STARTER
SWITCH
in this section.
2.
Steering cowl
• Remove seven screws.
3.
Driver inflator module
• Disconnect the inflator module connector
located at lower
oft he instrument panel driver
lower cover.
• Remove four screws.
• Disconnect the inflator module connector.
W CAUTION:
When carrying a live inflator module. make sure
the bag opening is pointed away from you. In
case of an accidental deployment, the bag will
then deploy with minimal chance of injury.
Never carry
the inflator module by the wires or
connector on the underside of the module.

8 -76 CHASSIS ELECTRICAL
FRONT SIDE MARKER LIGHT, PARKING LIGHT, TAILLIGHT,
LICENSE
PLATE LIGHT AND ILLUMINATION LIGHT
· GENERAL DESCRIPTION ;·. · ;. The circuit consists of the lighting switch, illumination controller, front side marker light, taillight, icense
plate light and the illumination light for each of switch, meter and ashtray.
All these lights come on when the lighting switch are turned on with the switch to either parking or he~dlight
position.
The brightness
of the illumination lights, except the ones for the ashtray and the glove box, can be a< justed
by the
illumination controller.
ILLUMINATION CIRCUIT
LIGHTING SW (COMBINATION
SW)
BATTERY(+)
n n
I~
w ~=o-t--+
f------
;;ooE ~-<0
f-------
OFF
RELAY; TAIL
SIDE
MARKER LIGHT
PARKING
LIGHT
TAILLIGHT
LICENSE
PLATE LIGHT INTERIOR
ILLUMINATION
LIGHT
) )
ILLUMINATION n CONTROLLER c__-,-----'
NOTE: Arrow marks " =:> " indicate the direction of current
Fig. 8-98
GLOVE BOX
ASHTRAY
1111

8 -82 CHASSIS ELECTRICAL
DIAGNOSIS
QUICK CHART FOR CHECK POINT
·~··
~
Fuse Front
side License ; Tail Lighting
Taillight
marker plate c ble '. F-12 e
Relay sw bulb he rness
e (15A) light bulb light bulb
1. Both Taillights inopera-0
0
0 0 tive (1) (2) (3) (4)
2. Taillight
on the left (or 0 0 right)
side inoperative
(1) (2)
3. Both front side marker 0 0
0 0 lights inoperative (1) (2) (3) (4)
4. Front
side marker 0 0 light on
the left (or right)
side inoperative (1) (2)
5. License plate light 0
0
inoperative (1) (2)
NOTE: Figure
in parenthesis "( )" indicates the order of inspection.
~
~
•

CHASSIS ELECTRICAL 8 -83
1. BOTH TAILLIGHTS INOPERATIVE
• IS FUSE F-12 (15Al NORMAL? I
I
I
I
YES I NO I
I I
• IS THE TAIL RELAY NORMAL? I REPLACE THE FUSE I
I
I
I
YES I NO I
I I
•
IS[&!] GROUNDED SECURELY? I REPLACE THE TAIL RELAY I
I
I
l
YES I NO I
I I
• REMOVE
THE CONNECTOR OF THE LIGHTING GROUND I R-41 SECURELY I SWITCH
• IS THERE ANY CONTINUITY BETWEEN 81 B-121
AND SIT[] WHEN THE SWITCH IS TURNED
TO PARKING OR HEADLIGHT POSITION?
l
I I
YES I NO I
I I
• IS
THE BATTERY VOLTAGE APPLIED BETWEEN THE REPAIR OR REPLACE THE I
HARNESS SIDE CONNECTOR Bl B-121 AND THE LIGHTING SWITCH
GROUND?
I
I I
YES
I NO I
I I
REPAIR
A POOR CONNECTION AT THE CONNECTORS REPAIR A POOR CONNECTION AT THE
OR AN OPEN CIRCUIT BETWEEN 41 X-91 AND 151 H-321. CONNECTORS OR AN OPEN CIRCUIT OR 1 [friJ ( 1 (K[]) AND[&!] BETWEEN FUSE 31 X-9IAND Bl B-121

CHASSIS ELECTRICAL 8-85
3. BOTH FRONT SIDE MARKER LIGHTS INOPERATIVE
• IS FUSE F-12 (15Al NORMAL? I
l
I I
YES I NO I
I I
• IS THE TAIL RELAY NORMAL? I REPLACE THE FUSE I
l
I I
YES I NO I
I I
• IS sl C-161 GROUNDED SECURELY? I REPLACE THE TAIL RELAY I
I
I
I
YES I NO I
I I
• REMOVE THE CONNECTOR OF THE LIGHTING
GROUND slc-16l SECURELY I SWITCH
• IS
THERE ANY CONTINUITY BETWEEN Bl B-121 AND 6CI[JWHEN THE SWITCH IS TURNED TO PARKING OR HEADLIGHT POSITION?
I
I I
YES I NO I
I I
• IS THE BATTERY VOLTAGE APPLIED BETWEEN THE REPAIR OR REPLACE THE I
HARNESS SIDE CONNECTOR Bl B-121 AND THE LIGHTING SWITCH
GROUND?
I
I
I
YES I NO 1
I I
REPAIR A POOR CONNECTION AT THE CONNECTORS REPAIR A POOR CONNECTION AT THE
OR AN OPEN CIRCUIT BETWEEN 41 X-91 AND 91 H-411, CONNECTORS OR AN OPEN CIRCUIT OR 1 IC-221 111 C-311 lAND siC-161 BETWEEN FUSE 31 X-91 AND al B-121

8-86 CHASSIS ELECTRICAL
4. FRONT SIDE MARKER LIGHT ON THE LEFT (OR RIGHT) Sl DE
INOPERATIVE ~ :,, '.
;:: • IS THE FRONT SIDE MARKER LIGHT BULB ON THE I LEFT (OR RIGHT) SIDE NORMAL?
I
YES
I NO I
I
• IS THERE ANY CONTINUITY BETWEEN 9 I H-411
I
REPLACE BULB I
AND 2 I C-221 (2 I C-311 )?
I
YES
I NO I
I
REPAIR
A POOR CONNECTION AT THE CONNECTORS OR AN REPAIR A POOR CONNECTION AT THE CONNEC1 ORS
OPEN CIRCUIT BETWEEN 1 IC-221 111 C-311 I AND siC-161 OR AN OPEN CIRCUIT IN THE CIRCUIT
NOTE: Connector in parenthesis "( )" indicates the check point of the front side marker light on the rig tside.
5. LICENSE PLATE LIGHT INOPERATIVE
• IS THE TAILLIGHT NORMAL? I ~
I
YES I I NO I
I
•
IS THE LICENSE PLATE LIGHT BULB NORMAL? I I REPAIR THE TAILLIGHT (REFER TO DIAGNOSIS "BOTH TAILLIGHTS INOPERATIVE" IN THIS SECTI ON) I
I
YES j I NO l
I
• IS [[!]GROUNDED SECURELY? I I REPLACE
THE BULB I
I
YES I
I NO I
I
• IS THE BATTERY VOLTAGE APPLIED BETWEEN
I
I GROUND IT SECURELY I
I 11 G-BI AND THE GROUND? I
I
I YES I
I NO
I ~ I REPAIR A POOR CONNECTION AT THE CONNECTORS I I REPAIR A POOR
CONNECTION AT THE CONNECT pRS OR AN OPEN
CIRCUIT BETWEEN 2 I G-81 AND [fl;TI OR AN OPEN CIRCUIT IN THE CIRCUIT
•