torque ISUZU TROOPER 1995 Workshop Manual

6F-8 ENGINE EXHAUST (V6 3.2L)
REAR EXHAUST PIPE
2
Fig. 6F-11
1+•1 REMOVAL
Preparation: • Battery negative cable.
• Raise the vehicle and support with
suitable safety stands.
1. Rear exhaust pipe fixing nuts
• Disconnect rear exhaust pipe at exhaust
silencer
2. Mounting rubber
3. Rear exhaust pipe
1••1 INSTALLATION
To install follow the removal steps in the reverse order,
noting the
following points.
1. Tighten the rear exhaust pipe fixing nuts to the
specified torque.
1«1 Torque N-m (lb·ft) 43 (32)
Removal steps 1. Rear exhaust pipe fixing nuts
2. Mounting rubber
3. Rear exhaust pipe
Installation steps to install, follow the removal steps in the reverse order.
1111

6F-1 0 ENGINE EXHAUST (V6 3.2L)
MAIN DATA AND SPECIFICATIONS
TORQUE SPECIFICATIONS
Fig. 6F-13
N·m (lb·ft) ,-.
..

AUTOMATIC TRANSMISSION (4l30-E) 7 A-1
TRANSMISSION
CONTENTS
Automatic Transmission (4L30-E). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 7 A
Manual Transmission . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section
78
Clutch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 7C
Transfer Case. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Section 70
SECTION 7A
AUTOMAT~ TRANSMISSION (4L30-E)
/' W CAUTION ./
When fasteners are r~movec;l, alway~reinstall them at the same location from which they were removed. If
a fastener needs to be repl£ed, use1'he 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 torque. If the above conditions are not followed,
parts or system damage could result.
CONTENTS
General Description ............................................. 7 A-2 Flashing Codes ............................................... 7 A-50
Construction ..................................................... 7 A-3 TECH 1 Connection ........................................ 7 A-52
Electronic Control Diagram ............................. 7A-4 TECH 1 Operating Flow Chart ....................... 7 A-53
Transmission
Control Module Clear DTC ........................................................ 7 A-65
(TCM) ............................................................. 7A-5 DTC Check ...................................................... 7 A-66
Control System Diagram ................................. 7 A-6 FO: Data List Quick Check .............................. 7A-67
Functions
of Input/Output Chart 1: Diagnosis Connector and
Components ............................................... 7A-11 Voltage Supply Test .................................. 7A-69
Range Reference
Chart .................................. 7A-12 Chart 2: Diagnostic Trouble Code (DTC) ...... 7A-71
Normal Operation of 1994-95 4L30-E Chart 3: Transmission and
Transmission .............................................. 7 A-13
TCM Identification ..................................... 7 A-72
Diagnosis ............................................................ 7A-15
Chart 5: Actuator Test Quick Check ............. 7A-73
Introduction .................................................... 7A-15 Without DTC Set .......................................... 7 A-140
Driver Information ......................................... 7 A-16 TCM Precautions .......................................... 7A-145
General Diagnosis Procedure ....................... 7A-18 Intermittent Conditions ............................... 7A-146
Preliminary Inspection Chart ........................ 7 A-19 TCM MEM-CAL Replacement ..................... 7A-147
Checking Transmission Fluid Level Wiring Diagram ............................................ 7A-150
and
Condition ............................................. 7 A-20 Connector Location
..................................... 7A-152
Test Driving .................................................... 7 A-22
Mechanical/Hydraulic Diagnosis .................. 7 A-23
Connector List .............................................. 7A-153 •
On-Vehicle
Service ........................................... 7A-155
Check Trans Indicator Chart ......................... 7 A-23 Checking Transmission Fluid
Mechanical/Hydraulic
Diagnosis Level .......................................................... 7A-155
Symptoms Index ........................................ 7A-24 Changing Transmission Fluid ..................... 7A-155
Stall Test ......................................................... 7 A-41 Manual Linkage ............................................ 7A-155
Line Pressure Test .......................................... 7 A-42
Selector Lever .............................................. 7 A-156
Shift Speed Chart ........................................... 7 A-43 Mode Switch ................................................ 7A-157
Lock-up
Speed Chart ..................................... 7 A-44 Transmission
(With Transfer Case). ........... 7A-160
....._ Electronic Diagnosis ...................................... 7 A-45 Solenoid Valve (Main Case Valve Body) .... 7A-165
Check Trans Indicator .................................... 7 A-46 Solenoid Valve (Adapter Case Valve
Diagnostic Check ........................................... 7 A-47 Body)
......................................................... 7A-166
''Check Trans" Check ..................................... 7 A-48 Valve Body Assembly (Main Case) ............. 7A-167

7A-2 AUTOMATIC TRANSMISSION (4L30-E)
Valve Body Assembly (Adapter Case) ....... 7A-168 Third Clutch and Sprag Unit ....................... 7A-195
Transmission Control
Module (TCM) ......... 7A-169 Third Clutch .................................................. 7A-196
Speed Sensor (Extension Housing) ............ 7A-169 Sprag
Unit ....................................................
7A-198
Transmission
Oil Temperature Sensor Second
Clutch .............................................. 7A-199
(Adapter Case) ..........................................
7A-170 3-4 Accumulator Piston ............................... 7A-200
Front Oil Seal (Converter Housing) ............ 7A-170 Reverse Clutch Piston and Center
Rear
Oil Seal (Extension Housing) ............. 7A-171 Support ..................................................... 7 A-202
Unit Repair ........................................................ 7A-173 Overrun Clutch and Turbine Shaft ............. 7A-204
Transmission (4L30-E) ................................. 7A-173 Main Data and Specifications ......................... 7 A-207
Converter Housing and Oil Pump General
Specifications ................................. 7 A-207
Assembly .................................................. 7 A-189 Torque
Specifications .................................. 7A-208
Oil
Pump ....................................................... 7A-190 Special Tools .................................................... 7A-211
Main Case Valve Body ................................. 7A-191 4L30-E Parts List.. ............................................. 7A-213
Adapter Case Valve Body ............................ 7A-193 Hydraulic
Circuit Diagram .......... End of This Manual
GENERAL DESCRIPTION
The 4L30-E is a 4-speed fully-automatic transmission.
It uses a microcomputer as a control unit to judge
running conditions
including throttle opening rate
and vehicle speed, then
it sets the shifting point in
the
optimum timing so that best driving performance
can be achieved.
In addition, the built-in shift mode select function can
select three shift modes according to the driver's
preference.
• Normal mode-Normal shift pattern.
• Winter mode-Starts in 3rd gear to reduce
slippage on ice
or snow.
• Power mode has a delayed upshift for when
more powerful acceleration is required.
Also, the built-in fail-safe
function ("backup mode")
assures driving performance even if the vehicle
speed sensor,
throttle signal or any solenoid fails.
Further, the self-diagnostic
function conducts diag­
nosis in a short time when the control system fails,
thus improving serviceability.
The major features of 4L30-E are as follows:
• A compact structure consisting of 2 sets of
planetary gears and flat torque converter.
• Electronic control selects the optimum shift
mode according
to the driving conditions.
• Electronic control maintains the optimum hy­
draulic pressure for clutch, band brake as well as
transmission so that shift feeling is improved.
• Two sets of planetary gears reduce friction of
power train.
Also, a lock-up mechanism in the torque con­
verter reduces fuel consumption.
• Wide gear ratio and high torque rate of torque
converter provide
excellent starting perform­
ance.
MODEL YEAR 1994-95 CHANGES
The Transmission Control Module (TCM) for ISUZU
TROOPER
models equipped with 4L30-E is changed
from "BOSCH" to "DELCO ELECTRONICS"
manufacture.
The main differences
which will be encountered
while servicing concerned vehicles are as follows:
Diagnostic Trouble Codes (DTC):
DTC's are changed: For example, DTC for
transmission gear error will be as follows depending
on the TCM unit:
-
On the "DELCO" unit (1994-95) ......... DTC 61
-On the "BOSCH" unit (1993-prior) ..... DTC 41
TCM Pin Connector:
The pin connector is changed. Therefore the
connections
to be made for troubleshooting also
change.
Shift Alteration when TECH 1 Tool is connected
toTCM:
SHIFTS WILL BE HARSH WHEN TECH 1 IS
CONNECTED.
Connection of TECH 1 automatically forces maximum
line pressure during shifts only.
Normal line pressure checks at idle and stall spe
can be carried out.
/
/
I J I
/
l
•

(
f
CROSS
SECTION
"'T1 ce· ~ .....
1. TORQUE CONVERTER-CLUTCH (TCC)
5.
REVERSE
CLUTCH (RC)
2.
FOURTH CLUTCH (C4)
6.
SECOND
CLUTCH (C2)
3.
OVERRUN CLUTCH
(OC)
7.
THIRD
CLUTCH (C3)
4. OVERDRIVE
UNIT
8.
RAVIGNEAUX
PLANETARY
GEARSET
9.
BRAKE
BAND (B)
10.
OVERDRIVE
FREE WHEEL
(ONE
WAY
CLUTCH) (OFW)
11.
SPRAG
FREE WHEEL
(ONE WAY
CLUTCH)
(PFW)
(
(') 0 2 CJ) -1 ::D c (') ::! 0 2
)> c: -f 0 s: )> -f n -f ::D )> 2 en s: c;; en s 2 -;; ,... w 0 I m -...... )> I w

AUTOMATIC TRANSMISSION (4l30-E) 7A-5
TRANSMISSION CONTROL MODULE (TCM)
ENGINE
ENGINE SPEED
ECM ENGINE
COOLANT
TEMPSW
;--J
---
SERIAL DATA
TORQUE
t MANAGEMENT TPS +
.L OUT
I -
4L30E
.J:
X a MODE SWA
Xb MODE SWB
Xc MODE SWC
Xg MODE SWG
A Ac OIL TEMP
Ad ANALOG GND
~~x OUTPUT SPEED HI
1 X1 OUTPUT SPEED LO
II A a TCCHI
Me SHIFT SOL. HI
~Md SHIFT SOL. 1-2/3-4
~Ma SHIFT SOL. 2-3
~Mb BAND APPLY SOL.
~Ab FORCE MOTOR HI
Ac FORCE MOTOR LO
ECM: Engine Control Module
TPS: Throttle Position Sensor
TCC: Torque Converter Clutch
ABS:
Anti-Lock Brake System
-
1
·-c
IGN BATT GND
h+ri A7 AS A4 C1 01
D12 VEHICLE
IGN
BRAKE SW ~ D14 D9 ~
DB AJC REQUEST /o---
CB BB POWER SW
=~
WINTERSW B6
C5 KICK DOWN SW C6 B5
-=
D7 IGN
D16 DIAG INIT. D6
~
D5 C10 CHECK TRANS LAMP
D4 TCM 89 POWER LAMP
A10 ATF WARNING LAMP ~
¥ 83 A11 WINTER LAMP
C14
A12
OD OFF SIGNAL CRUISE 812 84 CONTROLLER
811
C7 ABSSIGNAL ABS
810 CONTROLLER
C12
A2
A3
AS
C15
C16
Fig. 7A-3

7A-6 AUTOMATIC TRANSMISSION (4L30-E)
CONTROL SYSTEM DIAGRAM
L1J ~ (!) z L1J
I
I
lr
t:··
~ .. I I
I
I
AUTOMATIC TRANSMISSION ASSEMBLY
O.:a: :Eo LLJ(J) t-z --' L1J oVl
ENGINE COOLANT TEMPERATURE
ffio ~---a:O wz >LLJ z--' oo uCJ> w::C :::>u at-a:=> ~d
0 0 z ... w, --'"' o-.. (J)N t-.!-u.. J: CJ)
IGNITION
CONTROL .
MODULE
~==PO=W==ER==M=O=D=E=L=A=M=P~r.-------
r-------CHECK TRANS. LAMP
~=W=IN=T=E=R=M=O=D=E=LA=M=P~~--J---
::c u L1J a: 1-:.:: ::c <( :::> <( u L1J --' a: 1-(!) u al :::> >-L1J L1J 0 --' 1-~ z u a: :5 <( ~ ~ --' al Cl.
Cl. L1J i=
i= L1J ~ z :.:: --' --' <( L1J :5 :::> :::> a: z Cl. ::!: ::!: al 0
0 a: L1J 0 >-0 > --'o --' z (l._ 1-<( L1J Cl.Q 0 > __,..., "' 0--' L1J 1-zo u :::> u.. <(Vl a: z J: 0 <( al u.. ::!: CJ)
SHIFT
CONTROL
BAND APPLY CONTROL
TORQUE CONVERTER CLUTCH CONTROL
LINE PRESSURE CONTROL
SAFETY MODE
ON-BOARD DIAGNOSTIC
SYSTEM
TORQUE MANAGEMENT
ATF WARNING CONTROL
r-ABS CONTROL
L--A-T_F_w_A_R_N_I_N_G_L_A_M_P_...Jr---_l 1---------------'
0 L1J "'a: Bio wVl __,z uw J:Vl L1J >
POWER c): TRANSMIT
.... : OIL PRESSURE
CONTROL
MECHANICAL
...• : SIGNAL
LLJJ: ou ELECTRONIC ot:: -•: ::!:~ SIGNAL
KICK DOWN SWITCH
BRAKE SWITCH
POWER MODE SWITCH
WINTER MODE SWITCH
AIR CONDITIONING
SWITCH
ABS
SIGNAL (ASS CONTROLLER)
ABS: Anti-Lock Brake System
Fig. 7A-4
..

1. SHIFT CONTROL
The transmission gear is shifted according to the
shift pattern selected by the driver.
~ In shifting gears, the gear ratio is controlled by the
ON/ OFF signal using the 1-2/3-4 shift solenoids and
the 2-3 shift solenoid.
2. BAND APPLY CONTROL
The band apply is controlled when in the 3-2
downshift (engine overrun prevention) and the
garage shift (shock control).
The band
apply solenoid is controlled by the signal
from the Pulse Width Modulation (PWM) to regulate
the
flow of the oil.
3. TORQUE CONVERTER CLUTCH CONTROL
The clutch ON/OFF is controlled by moving the
converter clutch valve through shifting Torque
Converter Clutch
(TCC) solenoid using the ON/OFF
signal.
4. LINE PRESSURE CONTROL
The throttle signal allows the current signal to be
sent
to the force motor. After receiving the current
signal, the force motor activates the pressure
regulator valve to regulate the line pressure.
5. ON-BOARD DIAGNOSTIC SYSTEM
Several malfunction displays can be stored in the
Transmission Control Module (TCM) memory, and
read
out of it afterward.
The serial data lines, which are required for the
testing of the final assembly and the coupling to
other electronic modules, can be regulated by this
function.
6 FAIL-SAFE MECHANISM
If there is a problem in the transmission system, the
TCM will go into a "backup" mode. The vehicle can
still be driven, but the driver must use the gear
lever to shift gears.
7. TORQUE MANAGEMENT CONTROL
The TCM sends the absolute spark advance signal
to the Engine Control Module (ECM) while the
transmission is being shifted, to control the engine
spark timing in compliance with the vehicle running
condition to reduce the shocks caused by the
change of speed.
8. ATF WARNING CONTROL
The oil temperature sensor detects the ATF oil
temperature to control the oil temperature warning,
TCC and the winter mode.
9. ABS CONTROL
When the select lever is at "L" or "R" range, a
signal is sent
to the ABS controller as one of the
ABS control conditions.
AUTOMATIC TRANSMISSION (4L30-E) 7A-7

AUTOMATIC TRANSMISSION (4L30·E) 7A-9
GEAR SHIFT CONTROL
CD Shift pattern
SELECT
LEVER RANGE SHIFT PATTERN
D (Drive)
1
~ 2TCC ~ 3TCC ~ 4TCC
3 (Third)
1 ~ 2TCC ~ 3TCC f-4TCC
2 (Second)
1 ~ 2TCC f-3TCC
L (First) 1f-2
TCC =Torque Converter Clutch
® Gear position
The gear is selected by ON/OFF of two solenoids.
G~ 1-2/3-4
4 (Fourth)
X
3 (Third)
0
2 (Second) 0
1 (First)
X
P (Park)
R (Reverse)
X
N
(Neutral)
@ Selecting
gear position
2-3
X
X
0
0
0
0=0N
X=OFF
1-2/3-4 SOLENOID
(Normally closed)
2-3 SOLENOID
(Normally open)
ON ~ PRESSURE TO
SHIFT
VALVE
OFF~ PRESSURE TO
SHIFT VALVE
Seven types
of positions can be selected according to 5 signals from the mode switch as shown below.
MODE
SW TERMINALS
SELECT LEVER RANGE 5(D)
8(A) 7(8) 6(C) 3(G)
P (Park)
• • •
R (Reverse) • • •
N (Neutral) • • •
D (Drive) • • •
3 (Third) • • • • •
2 (Second) • • •
L (First) • • •
• =Continuity
Fig. 7A-5a

AUTOMATIC TRANSMISSION (4L30-E) 7 A-11
FUNCTIONS OF INPUT /OUTPUT COMPONENTS
Components Function
Speed sensor
Senses rotation
of output shaft and feeds the data to Transmission
(fixed
to transmission (T/M)) Control Module (TCM)
Throttle Senses the extent of throttle valve opening and the speed of the throttle
position sensor (TPS) valve lever motion to open the valve and feeds the data to TCM (fed to
(fixed to engine)
Engine Control Module (ECM) also)
I
Brake Switch (SW) Senses whether the driver has pressed the brake pedal or not and feeds
N (fixed
to brake pedal) the
information to TCM
p Kick-down SW (fixed to Senses whether the driver has pushed the accelerator pedal fully or not
u accelerator pedal) and feeds the information to TCM
T Mode
SW (fixed to T/M) Senses the select lever position and feeds the information to TCM
s Power drive SW Senses whether the driver has selected the power mode and feeds the
I (fixed to front console) information to TCM
G T/M
oil temp. sensor
Senses the T/M oil temperature and feeds the data to TCM
N Engine
coolant Senses the engine cooling water temperature and feeds the data to TCM
A temperature
SW (feeds the signal from ECM)
L
Engine speed
signal Feeds the signals monitoring engine speed to TCM from Ignition Control
Module
(fed to ECM also)
Air conditioning Senses whether the air conditioner has been switched on or not and
information feeds the information
to TCM
On-board diagnostic
input By monitoring the Ground (GND), the location of failure is shown on the
T/M
monitor lamp ("CHECK TRANS") by flashing the diagnostic trouble
code
Winter switch
Senses whether the driver has selected the winter mode, and feeds the
(fixed
to front console) information to TCM
Cruise
controller Downshift takes place when Overdrive OFF signal is received from auto
(Overdrive
OFF signal) cruise control unit
Shift
solenoid Selects shift point and gear position suited to the vehicle running con-s 1-2/3-4, 2-3
dition on the basis of TCM output 0 Band apply solenoid
Controls oil flow suited to the vehicle running condition on the basis of L
E TCM output
0 N
Torque
Converter Controls clutch engagement/disengagement suited to the vehicle
u 0 Clutch solenoid running condition on the basis of TCM output
T I Force motor Adjusts the oil pump delivery pressure to line pressure suited to the p D
(Pressure regulator vehicle running condition on the basis of TCM output u valve) T
Power drive mode lamp
Informs the driver whether the vehicle is in power mode or not
s Winter drive mode lamp Informs the driver whether the vehicle is in winter mode or not
I T/M monitor lamp Informs the driver of failure in the system. It also displays the self diagnosis
G
("CHECK TRANS") code.
N Data Link Connector
(DLC) When connected with TECH 1 or tester, can communicate the data for A
L function
check, etc. (fed to ECM also). When TECH 1 is not connected, can
communicate the
signal for torque management with ECM.
Self-diagnosis connector
When short-circuited with the bipolar connector, the T/M monitor lamp
displays
a failure by code.
ATF warning
lamp Lights when ATF oil temperature rises.
ABS signal When the select lever is at "Reverse" or "L" range, sends a signal to the
ABS controller as one of the ABS control conditions.