Isuzu Trooper (1996-2001 year) Electrical Manual — part 12
STARTING SYSTEM
Anti-theft and Keyless Entry
Control Unit
Automatic Transmission
Mode Switch
Clutch Start Switch
Dash Fuse Box
Fuse/Relay Box
Starter
Starter Relay
Starter Switch
Component Index
21
STARTING SYSTEM
P-10
P-7
P-6
BLK
P-4
P-3
STARTER
M
Pull-in
Coil
Hold-in
Coil
STARTER
SOLENOID
STARTER
MOTOR
BLK/YEL
BLK/WHT
H-1
BLU
X-17
5
3
1
X-17
6
2
4
WHT/RED
WHT/GRN
Blower
Controls
Blower
Controls,
Automatic
A/C controls
C-1
STARTER
RELAY
10A
WHT/RED
DASH
FUSE
BOX
START
OFF
ON
ACC
See Power
Distribution,
page 10-3.
See Power
Distribution,
page 10-2.
3
B-11
LOCK
WHT/GRN
B-11
4
WHT/BLK
WHT/BLK
WHT/BLK
BLK/WHT
FUSE/
RELAY
BOX
STARTER
RELAY
6
H-41
WHT/BLU
WHT/BLU
BLK
P-2
BATTERY
BLK
BLK/RED
P-1
P-5
FL-2
KEY SW.
50A
FUSE/
RELAY
BOX
FL-1
MAIN
80A
H-14
2
WHT/BLK
See Power
Distribution,
pages 10
and 10-1.
WHT/BLK
WHT/BLK
BLK/
RED
WHT/BLK
Starter
relay
control
ANTI-THEFT
and KEY-
LESS ENTRY
CONTROL
UNIT
Solid state:
do not check
resistance.
B-20
D
3
2
L
M-25
1
H-8
15
N
R
P
WHT/RED
M-25
4
YEL
RED
AUTOMATIC
TRANS-
MISSION
MODE
SWITCH
STARTER
SWITCH
SX5
SB2
Automatic
Transmission
16
H-10
WHT/BLU
H-10
15
WHT/RED
28
+
-
2
H-13
WHT/RED
13
H-12
With
Anti-theft
Without
Anti-theft
BLU
BLK
B-2
See Ground
Distribution,
page 14-3.
BLK
BLK
SB18
Circuit Schematic
21-1
STARTING SYSTEM
BLK
B-2
See Ground
Distribution,
page 14-3.
BLK
BLK
SB18
P-10
P-7
P-6
BLK
P-4
P-3
STARTER
M
Pull-in
Coil
Hold-in
Coil
STARTER
SOLENOID
STARTER
MOTOR
BLK/YEL
BLK/WHT
H-1
BLU
X-17
5
3
1
X-17
6
2
4
WHT/RED
WHT/GRN
Blower
Controls
Automatic A/C
Controls,
Blower
Controls
C-1
STARTER
RELAY
10A
WHT/RED
DASH
FUSE
BOX
START
OFF
ON
ACC
See Power
Distribution,
page 10-3.
See Power
Distribution,
page 10-2.
3
B-11
LOCK
WHT/GRN
B-11
4
WHT/BLK
WHT/BLK
WHT/BLK
BLK/WHT
FUSE/
RELAY
BOX
CLUTCH
START SWITCH
Closed with clutch
pedal depressed.
1
B-17
2
B-17
STARTER
RELAY
17
H-12
BLK/WHT
BLK/WHT
BLK
P-2
BATTERY
+
-
BLK
BLK/RED
P-1
P-5
FUSE/
RELAY
BOX
H-14
2
WHT/BLK
WHT/BLK
WHT/BLK
BLK/
RED
WHT/BLK
STARTER
SWITCH
SX5
SB2
Starter
relay
control
ANTI-THEFT
and KEYLESS
ENTRY
CONTROL
UNIT
Solid state:
do not check
resistance.
28
Manual
Transmission
FL-2
KEY SW.
50A
FL-1
MAIN
80A
See Power
Distribution,
pages 10
and 10-1.
B-20
13
H-12
BLU
With
Anti-theft
Without
Anti-theft
Circuit Schematic
21-2
STARTING SYSTEM
(Refer to Section 201 for photographs.)
Component
Photo No.
Anti-theft and Keyless Entry
Control Unit
Behind front console
62
. . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Automatic Transmission
Mode Switch
Beneath vehicle, on left side of transmission
43
. . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clutch Start Switch
Below I/P, top of clutch pedal support
57
. . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Dash Fuse Box
Behind left dash side trim panel
55
. . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuse/Relay Box
Right side of engine compartment, on inner fender panel
41
. . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . .
Starter
Lower left rear of engine
24
. . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starter Relay
In fuse/relay box
38
. . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starter Switch
Underside of steering column
46
. . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connector
B-11 (8-WHT)
Below I/P, right of steering column
58
. . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
H-1 (1-GRY)
Right front of engine compartment
40
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
H-8 (16-WHT)
Below I/P, above left dash side trim panel, on bracket
70
. . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . .
H-10 (16-BLU)
Left front of engine compartment
27
. . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
H-12 (20-WHT)
Below I/P, above right dash side trim panel, on bracket
100
. . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . .
H-13 (6-BLK)
Below I/P, above right dash side trim panel, on bracket
100
. . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . .
H-14 (2-RED)
Below I/P, above right dash side trim panel, on bracket
115
. . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . .
H-41 (16-BLK)
Right front of engine compartment
31
. . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
P-3 (1-BLK)
On starter solenoid
24
. . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ground
B2
Above top of left dash side trim panel
116
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
P-6
Right side of engine compartment, on rear of battery tray
40
. . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . .
P-7
Lower right front of engine compartment
5
. . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
P-10
Lower right side of engine, near power steering pump
. . . . . . . . . . . . . . . . . . . . . . .
Terminal
P-2
In fuse/relay box
36
. . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
P-4
On starter solenoid
24
. . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Circuit Operation
Manual Transmission
Battery voltage is applied at all times from the positive
battery terminal to the starter switch and the normally
open starter solenoid contacts. When the starter switch
is turned to START and the clutch start switch is closed,
battery voltage is applied to the starter relay. The starter
relay energizes and applies battery voltage to the start-
er solenoid coils.The starter solenoid coils energize,
the starter solenoid contact closes, and battery voltage
is applied to the starter motor. The starter motor en-
gages to start the engine. If the vehicle is equipped with
an anti-theft system, the anti-theft and keyless entry
control unit grounds the starter relay.
Automatic Transmission
Battery voltage is applied at all times from the positive
battery terminal to the starter switch and the normally
open starter solenoid contacts. When the starter switch
is turned to START and the automatic transmission
mode switch is in PARK or NEUTRAL, battery voltage is
applied to the starter relay. The starter relay energizes
and applies battery voltage to the starter solenoid coils.
The starter solenoid coils energize, the starter solenoid
contact closes, and battery voltage is applied to the
starter motor. The starter motor engages to start the
engine. If the vehicle is equipped with an anti-theft sys-
tem, the anti-theft and keyless entry control unit
grounds the starter relay.
Component Location Index
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