instrument panel ISUZU TROOPER 1995 Owner's Manual

New or service sensors will already have the
compound
applied to the threads. If a sensor is
removed
from an engine and iffor any reason it
is to be reinstalled, the threads must have anti­
seize compound
applied before reinstallation.
•
Apply anti-seize compound or equivalent to
threads of oxygen sensor if necessary.
• Tighten the oxygen sensor to the specified
torque.
1~1 Torque N·m (lb·ft) 55 (40)
1. H02S wiring connector
THROTTLE POSITION (TP) SENSOR
Fig. 6E2-59
E) REMOVAL
Preparation: • Battery negative cable.
1. Throttle Position (TP) sensor wiring connector
2. TP sensor fixing screw
3. TP sensor
I••IINSTALLATION
3. TP sensor
2. TP sensor fixing screw
• Tighten the fixing screw to the specified torque.
~~~ Torque N·m (lb·in) I 2 (18)
• Use a "Scan tool" to check TP sensor output
voltage with throttle closed, should be under
0.85 volts. If over 0.85 volts, check for binding
throttle shaft, or TP sensor lever. If all OK,
replace TP sensor.
1.
TP sensor wiring connector
DRIVEABILITY AND EMISSIONS 6E2-1 07
MANIFOLD ABSOLUTE PRESSURE
(MAP) SENSOR
1. Vacuum hose
) 0~
2 .• ,.~,,~,~
conne~ JJJ
4. Sensor
Fig. 6E2-60
E) REMOVAL
Preparation: • Battery negative cable.
1. Vacuum hose
2. Electrical connector
3. Attaching screws
4. Sensor
I••IINSTALLATION
4. Sensor
3. Attaching screws
2. Electrical connector
1. Vacuum hose
VEHICLE SPEED SENSOR (VSS)
Refer to INSTRUMENT PANEL CLUSTER AND
CONSOLE of this manual for replacement of vehicle
speed sensor located in instrument panel.
POWER STEERING PRESSURE (PSP)
SWITCH
Refer to STEERING, SUSPENSION, TIRES AND
WHEELS for service of the power steering pressure
switch.
PARK/NEUTRAL
SWITCH POSITION
(PNP}
See
Section AUTOMATIC TRANSMISSION GENERAL
INFORMATION Section for park/neutral position
switch.
"On-Vehicle Service" and adjustment
procedures are
also listed there.

DRIVEABILITY AND EMISSIONS 6E2-157
SECTION C-8
SHIFT INDICATOR LIGHT (MIT ONLY)
CONTENTS
General Description . . . . . . . . . . . . . . . . . . . . . 6E2-157 Diagnosis ............................. 6E2-157
Purpose ............................ 6E2-157 Transmission Switch Functional Check ..... 6E2-157
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 6E2-157 Clutch Switch Functional Check ........... 6E2-157
Chart C-8 Manual Transmission (M/T)
Shift Light ........................... 6E2-158
GENERAL DESCRIPTION
PURPOSE
The shift indicator light is a device which is installed in
the instrument
panel to urge the driver to up shiftatthe
proper moment. This insures operations for best fuel
economy.
OPERATION
It turns on as soon as vehicle conditions become
suitable for operation in the next higher gear, and turns
off as the clutch is released for up shift.
The engine parameters used
to activate the shift
indicator
light are engine speed, engine load and
engine
coolant temperature. The engine load is sensed
as a function of Throttle Body (TB) position by a sensor
built into the TB. The
shift indicator
light turns on when the following
conditions exist simultaneously:
1. Engine coolant temperature is hotter than -s·c.
2. TB is not in idle position.
3. The engine load, is not greater than the
predetermined
values.
4. The transmission gear is in any forward position
other then 5th, that is, either
of the two
transmission switches (1st-2nd switch and 3rd-
4th switch) is on. 1st-2nd switch turns on
when the
transmission is in 1st-2nd, and 3rd-4th switch
turns on when the transmission 3rd
or 4th.
5. The clutch is engaged (clutch switch is "ON").
The control system schematic is shown in CHART
C-8.
DIAGNOSIS
See CHART C-8.
TRANSMISSION SWITCH FUNCTIONAL
CHECK
1. Connector from the suspected faulty switch.
2. An ohmmeter across terminals of switch.
3. Operate gear shift.
4. Ohmmeter should indicate open (infinity) then
closed (00).
5. Replace switch if not operating as described.
CLUTCH SWITCH FUNCTIONAL CHECK
1. Remove clutch switch.
2. Ohmmeter to terminal of clutch switch.
3. Operate the clutch switch.
4. Ohmmeter should read "closed" (00) then
"open" (infinity) when clutch switch is pressed.
5. Replace switch if not operating as described.

7 A-48 AUTOMATIC TRANSMISSION (4L30-E)
"CHECK TRANS" CHECK
1. CASE it is ON during 2 to 3 seconds at ignition
(or when the engine is cranked) but it is OFF
after (Fig. 7A-8a). The indicator is working
normally GOTO DIAGNOSTIC CHECK.
2. CASE it is flashing and the flash is 0.2 seconds
ON and 0.2 seconds OFF always when ignition
is on (engine cranked or not). This means that
there is a malfunction. GOTO DIAGNOSTIC
CHECK.
Normal
Abnormal
~-IGN Key ON
ON
II
OFF __j l___
~
3 Sec. (SOHC) 2 Sec. (OOHC) (Lamp check)
1-
IGN Key ON
il 0.2Sec.
oN 11 n n n ~~--s_ ~~)-_. OFF __j u u u l:
I. .I. .1.11. 0.2
Sec.
3.2 Sec. 3 Sec. (SOHC) 2 Sec. (OOHC) (Lamp check)
Fig. 7A-8b
4. CASE it is staying ON always when Ignition is
ON.
(1) This means that connection between the
Lamp and the TCM is shorted to ground
(Fig. 7 A-8c).
(2) Verify if instrument panel terminal 7 of
connector 1-1 is shorted to ground.
(3) Verify if the TCM connector C-91 terminal
C10 is shorted to ground.
(4) Verify that the instrument panel terminal 6
of connector 1-1 is connected to Battery.
(5) IF problem solved: GOTO CHECK TRANS
INDICATOR.
NO: GOTO TCM MEM-CAL REPLACE­
MENT.
Fig. 7A-8a 5. CASE it is staying OFF with the ignition ON
(engine OFF). 3. CASE the CHECK TRANS indicator is flashing
always and the flash is 0.4 seconds ON and 0.4
second OFF.
(1) This means that the Transmission Control
Module (TCM) is in flashing code mode.
This mode is only used for service. This
mode is set when the Terminal 1 of
diagnostic connector C-92 is set to
ground. To go out of this mode see Fig.
7A-8b.
(2) Check
if terminal 1 of diagnostic con­
nector C-92 is shorted to ground. (Voltage
is
about 0 volts when there is a short to
ground instead of 5 volts).
(3) Check if TCM terminal 016 has the same
problem.
(4) Remove the short circuit to ground due to
wiring problems.
(5) IF problem solved: GOTO CHECK TRANS
INDICATOR.
NO: GOTO TCM MEM-CAL REPLACE­
MENT.
(1) This means that connection between the
Lamp and the TCM is shorted to battery or
opened (Fig. 7 A-8c).
(2) Verify if instrument panel terminal 7 of
connector 1-1 is shorted to battery or
open.
(3)
Verify if the TCM connector C-91 terminal
C1 0 is shorted to battery or open.
(4)
Verify that the instrument panel terminal 6
of connector 1-1 is connected to Battery. If
not check the Fuses and the connections
(terminal 10 of connector H-25) voltage.
(5) IF problem solved: GOTO CHECK TRANS
INDICATOR.
NO: GOTO TCM MEM-CAL REPLACE­
MENT.

2. DIAGNOSTIC TROUBLE CODES (DTC)
(1) DTC can be displayed by the Transmission
Control Module (TCM) by shorting
together terminals 1 and 2 of the TCM
Diagnosis Connector (C-92)
located left
side of instrument panel (Fig. 7A-8e) (This
grounds the TCM pin D16).
Normal
Abnormal
Fig. 7A-8e
r
Diagnostic test start
0.4 Sec. 0.4 Sec. ~ :..-.! ON I I I I
OFF -----J: : : :
:---f4': -:: ~ 0.4 Sec. 3.2 Sec. 0.4 Sec.
- Diagnostic test start
0.4 Sec. 0.4 Sec.
H H
ONI H H
OFFH H L;;
1*----1 3.2 Sec. 1.2 Sec.
AUTOMATIC TRANSMISSION (4L30-E) 7A-51
(1.25 Hz)
0.4Sec.
' '
' ' ' ' :++l
(2) After this, the CHECK TRANS Indicator will
be OFF for 3.2 second and then will flash
each DTC 3 times (Fig. 7 A-Sf).
CD When there are more than 9 flashes
this means that the indicator is
constantly flashing, OFF for 0.4
seconds, ON for 0.4 seconds. In this
case there is no DTC stored in
memory.
• To find the problem without a scan
tool and without DTC GOTO
WITHOUT DTC SET.
@ When there are less than 9 flashes
you will see DTC of 2 digits repeated
3
times each and when all codes
have been
displayed they are
displayed again beginning from the
first one.
@ Do not care about the DTC order : if
"21" is before "22" it does not
matter.
@ Write down all codes numbers and
GOTO DTC CHECK.
(3) IF CHECK TRANS indicator is not flashing
GOTO
"CHECK TRANS" CHECK.
The trouble code(s) will flash 3 times. Example: DTC 11 x 3 (times), DTC 32 x 3 (times)
0.4 Sec.
' ' I I I I I
1 I I I ~~ 0.4 Sec. 1.2 Sec. 0.4 Sec.
Fig. 7A-8f

8-44 CHASSIS ELECTRICAL
B REMOVAL (FIG. 8-60)
Preparation: Disconnect the battery ground cable.
5. Starter switch
Fig. 8-60
1. Front console assembly
• Remove four screws.
• Remove the transmission shift lever knob.
• Remove the transfer shift lever knob.
• Disconnect the seat heater switch connectors
(If so equipped).
• Disconnect the "POWER & WINTER" switch
connectors
(A/T only).
2. Lower cluster assembly
• Remove three screws.
• Disconnect the cigar lighter connectors.
• Remove the cigar lighter illumination bulb
socket.
• Disconnect the ashtray illumination bulb
connector.
3. Instrument panel driver lower cover
• Remove the engine hood opener.
• Remove three screws and clip.
• Disconnect four fasteners.
4. Steering cowl
• Remove seven screws .
5. Starter switch
• Disconnect the connector.
• Remove the screw.
B INSTALLATION
To install, follow the removal steps in the everse
order noting the
following point.
1. When installing the steering cowl, be sure o pass
the harnesses through the route as
show in the
illustration so that the starter switch, th com­
bination switch and the inflator
module
will not get caught. (Fig. 8-61)
Starter switch
harness
Fig. 8-61
CLUTCH START SWITCH
cowl
When the clutch pedal is depressed, the clute start
switch is turned on
to form a circuit to activ e the
starter.
~ INSPECTION
1 til!. I Check the continuity between the clute start
switch terminals. (Fig. 8-62)
Replace the switch when the result
of insp ction
is found abnormal.

'

8-56 CHASSIS ElECTRICAl
STARTER SWITCH NOTE:
Refer
to START AND CHARGING in this section. For relay
removal, refer to "Connector H ndling" ~
under "NOTES FOR WORKING ON ELE TRICAL .,..........
DATA LINK CONNECTOR ITEMS" in this section.
The data
link connector (white) is used to retrieve the
diagnostic
trouble codes stored from the engine UPSHIFT-1 RELAY
control module. The data link connector is installed at .----------------+----.
inside of the instrument panel driver lower cover.
(Fig. 8-72)
Fig. 8-72
FUEL PUMP RELAY
ENGINE CONTROL MODULE MAIN
RELAY
,-------,
"" __!.___./, ' 4 '<)I ~
~! Q)__l__1__j" ' L _____ _j
Fig. 8-73
~ INSPECTION
Check to see if there is any continuity between
the
relay terminals. (Fig. 8-73)
Replace the relay when the result of inspection
is found
abnormal.
®-@ · · · · · · · · No continuity
(When battery voltage is applied between CD-@)
®-@ · · · · · · · · Continuity
m
:
Fig. 8-74
~ INSPECTION
ltgl Check to see if there is any continuity b tween
the
relay terminals. (Fig. 8-7 4)
Replace the relay when the result of ins ~
is found abnormal.
DIODE
Terminal No. 4 3
Connection A (±) 8
pattern 8 8 (±)
Fig.
8-75
..

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.

8-74 CHASSIS ELECTRICAL
FOG LIGHT SWITCH
~ INSPECTION
I tgj Check the continuity between the connector ter­
minals
while operating the switch. (Fig. 8-94)
Replace the switch when the result of inspection
is found abnormal.
ru~
IT
2 [II
161514131
c-
Fig. 8-94
B REMOVAL (FIG. 8-95)
TI ';
Preparation: Disconnect the battery ground cable.
Fig.
8-95
I I 1. Front console I assembly
1. Front console assembly
• Remove four screws.
• Remove the transmission shift leve knob
(M!r only).
• Remove the transfer shift lever knob.
• Disconnect the seat heater switch con ectors
(If so equipped).
• Disconnect the POWER & WINTER switch
connectors
(A/T only).
2.
Lower cluster assembly
• Remove three screws.
• Disconnect the cigar lighter connector .
• Remove the cigar lighter illuminatio bulb
socket.
• Disconnect the ashtray illuminatio bulb
connector.
3.
Instrument panel driver lower cover
• Remove the engine hood opener.
• Remove three screws and clip.
• Disconnect four fasteners.
4.
Instrument panel cluster assembly
• Remove five screws.
• Disconnect the four clips at top of instr ment
panel cluster assembly.
5. Fog
light switch
• To remove the switch, pushing the loc from
the back side of the cluster assembly.
B INSTALLATION
To install, follow the removal steps in the r verse
order, noting the
following point:
1. Push in the switch with your fingers un il the
switch is locked securely.
LIGHTING RELAY
~ INSPECTION
Check to see if there is any continuity be ween
the relay terminals. (Fig.
8-96)
Replace the relay when the result of in spec ion is
found abnormal.
CD-3 · · · · • · · · No continuit
(When the battery voltage is applied
between
4 -s)
•

LIGHTING SWITCH
Refer to "HEADLIGHT AND FOG LIGHT" in this
~ section.
ILLUMINATION CONTROLLER
Turning the illumination controller knob upward
increases the brightness
of each illumination light,
turning it downward decreases its brightness. The
knob is
installed on the ground circuit of the
illumination lights, turning it changes the resistance
of the controller. (Fig. 8-103)
Fig. 8-103
....._., ~ INSPECTION (FIG. 8-104)
Check the illumination controller function (Fig. 8-104)
Replace the illumination controller when the result of
inspection is found abnormal.
Fig.
8-104
+
Illumination
controller
CHASSIS ELECTRICAL 8-87
B REMOVAL (FIG. 8-105)
Preparation: Disconnect the battery ground cable.
This illustration is based on fog light SW removal.
Fig. 8-105
1. Front console assembly
2. Lower cluster assembly
3. Instrument panel driver lower cover
4. Instrument panel cluster assembly
• Refer to FOG LIGHT SWITCH removal steps
in this section.
5.
Illumination controller
• To remove the controller, pushing the lock
from the back side of the cluster assembly.
B INSTALLATION
To install, follow the removal steps in the reverse
order, noting the
following point.
1. Push in the switch with your fingers until the
switch is locked securely.

CIGARETTE LIGHTER ILLUMINATION
BULB
E) REMOVAL (FIG. 8-109)
Preparation: Disconnect the battery ground cable.
__ 1JJjj})dr:-~tJUJJJ 11 I
Fig. 8-109
1. Instrument cluster panel
• Remove eight screws.
2. Bulb
2. Bulb
• Turn the socket counterclockwise to remove
it, then
pull out the bulb.
B INSTALLATION
To install, follow the removal steps in the reverse
order.
ASHTRAY ILLUMINATION BULB
E) REMOVAL (FIG. 8-110)
Preparation: Disconnect the battery ground cable.
Fig. 8-110
CHASSIS ELECTRICAL 8-89
1. Instrument cluster panel
• Remove eight screws.
2. Ashtray
3. Audio box
• Remove four screws.
4. Ashtray guide
• Remove two screws.
5. Bulb
• Turn the socket counterclockwise to remove
it then pull out the bulb.
B INSTALLATION
To install, follow the removal steps in the reverse
order.
GLOVE BOX ILLUMINATION BULB
E) REMOVAL (FIG. 8-111)
Preparation: Disconnect the battery ground cable.
Fig.8-111
1. Bulb
• Open the glove box lid.
• Pull
out the bulb.
B INSTALLATION
To install, follow the removal steps in the reverse
order.