1998 ISUZU TROOPER Service Repair Manual

Page 2761 of 3573

ISUZU TROOPER 1998  Service Repair Manual 8DÐ168 WIRING SYSTEM
Diagnosis
Quick Chart for Check Point
1.  RHD
2.  LHD
Trouble
modeCheck point
RHD-1
RHD-2
RHD-2
Fuse
F-12
(15A)Lighting
SWTail
relayClearance
light bulbLicense 
plate light
bulbC

Page 2762 of 3573

ISUZU TROOPER 1998  Service Repair Manual WIRING SYSTEM 8DÐ169
1-1  All Illuminations Lights Inoperative
1-2  Both Taillights Inoperative
IS THE BATTERY VOLTAGE APPLIED BETWEEN
HARNESS SIDE CONNECTOR 8  B-12   AND GROUND
WHEN LIGHTING SWITCH

Page 2763 of 3573

ISUZU TROOPER 1998  Service Repair Manual 8DÐ170 WIRING SYSTEM
1-3  Taillight On The Left (Or Right) Side Inoperative
IS THE TAILLIGHT BULB ON THE LEFT (OR RIGHT)
SIDE NORMAL?·
·YES
NO
REPLACE THE BULB
WITH THE LIGHTING SWITCH AT THE CLEAR

Page 2764 of 3573

ISUZU TROOPER 1998  Service Repair Manual WIRING SYSTEM 8DÐ171
1-4  Both Clearance Lights Inoperative
IS FUSE F-12 (15A) NORMAL?·
·YES
NO
REPLACE THE FUSE
REPLACE THE RELAY
REMOVE THE CONNECTOR OF THE LIGHTING SWITCH
·
IS THERE ANY CONTIN

Page 2765 of 3573

ISUZU TROOPER 1998  Service Repair Manual 8DÐ172 WIRING SYSTEM
1-5  Clearance Light On The Left (Or Right) Side Inoperative
·IS THE CLEARANCE LIGHT BULB ON THE LEFT
(OR RIGHT) SIDE NORMAL?
YESNO
REPLACE THE BULB·IS THERE ANY CONTINUITY BET

Page 2766 of 3573

ISUZU TROOPER 1998  Service Repair Manual WIRING SYSTEM 8DÐ173
(RHD-2)
YESNO
REPAIR A POOR CONNECTION AT 
THE CONNECTORS OR AN OPEN
CIRCUIT BETWEEN FUSE F-12 (15A)
AND 8  B-12 REPAIR A POOR CONNECTION AT THE CONNECTORS
OR AN OPEN CIRCUIT BET

Page 2767 of 3573

ISUZU TROOPER 1998  Service Repair Manual 8DÐ174 WIRING SYSTEM
1-7  License Plate Light On The Left (Or Right) Side Inoperative
(RHD-2)
IS THE LICENSE PLATE LIGHT BULB ON THE LEFT
(OR RIGHT) SIDE NORMAL?·
·YES
NO
REPLACE THE BULB
WITH THE

Page 2768 of 3573

ISUZU TROOPER 1998  Service Repair Manual WIRING SYSTEM 8DÐ175
2-1  All Illumination Lights Inoperative
·IS TAIL RELAY NORMAL?
YESNO
REPLACE THE RELAY·IS THE CONTINUITY IN THE LIGHTING SWITCH NORMAL?
YESNO
REPAIR A POOR CONNECTION AT THE C