Isuzu Rodeo UE. Manual - part 470

7A–96

AUTOMATIC TRANSMISSION (4L30–E)

Internal Components

247RW002

Legend

(608) Seal, Reverse Clutch Piston (Inner)
(609) Seal, Reverse Clutch Piston (Outer)
(610) Piston, Reverse Clutch

(611) Spring, Piston Clutch

(612) Seat, Spring/Reverse Clutch
(613) Ring, Retaining
(614) Plate, Waved/Reverse Clutch
(615) Plate, Reverse Clutch (Steel)
(616) Plate Assembly, Reverse Clutch (Lined)
(617) Plate, Reverse Clutch Pressure/Selective
(618) Drum Assembly, 2nd Clutch
(620) Seal, 2nd Clutch Piston (Inner)
(621) Seal, 2nd Clutch Piston (Outer)
(622) Piston, 2nd Clutch
(623) Seat, Spring/2nd Clutch
(625) Plate, Waved/2nd Clutch
(626) Plate, 2nd Clutch (Steel)

(627) Plate Assembly, 2nd Clutch (Lined)
(628) Spacer, 2nd Clutch
(629) Ring, Retaining
(630) Gear, Ring
(631) Washer, Thrust/2nd Clutch/3rd Clutch
(632) Thrust Washer, Clutch Hub
(634) Drum Assembly, 3rd Clutch
(635) Seal, 3rd clutch piston (Inner)
(636) Washer, Retaining
(637) Seal, 3rd Clutch Piston (Outer)
(638) Piston 3rd Clutch
(639) Seat, Spring/3rd Clutch
(640) Ring, Retaining
(641) Plate, Spring Cushion/3rd Clutch
(642) Plate, 3rd Clutch (Steel)
(643) Plate Assembly, 3rd Clutch (Lined)
(644) Washer, Thrust/Input Sun
(645) Bearing, Input Shaft/Gear Assembly

7A–97

AUTOMATIC TRANSMISSION (4L30–E)

(646) Gear Assembly, Input Sun
(647) Race Assembly, Sprag
(648) Ring, Retaining/Sprag
(649) Ring, Retaining
(650) Cage Assembly, Sprag
(651) Bearing, Output Shaft/Input Sun
(652) Washer, Output Shaft/Input Sun
(653) Carrier Assembly, Planetary

(658) Gear, Reaction Sun
(659) Drum, Reaction Sun
(664) Band Assembly, Brake
(667) Seal, Ring/Wheel Parking Lock
(668) Wheel, Parking Lock
(672) Wheel, Speed
(673) Ring, Retaining
(675) Bearing, Thrust Assembly

Center Support Assembly

241RS010

Legend

(701) Center Support
(702) Retainer Plate

(703) Plug, Lockout
(704) Spring, Overrun Lockout
(705) Valve, Overrun Lockout

TRANSMISSION CONTROL SYSTEM (4L30–E)

7A1–1

RODEO

TRANSMISSION

TRANSMISSION CONTROL SYSTEM (4L30–E)

CONTENTS

Service Precaution

7A1–2

. . . . . . . . . . . . . . . . . . . . . . 

General Description

7A1–2

. . . . . . . . . . . . . . . . . . . . . 

Electronic Control Diagram

7A1–3

. . . . . . . . . . . . . 

Powertrain Control Module (PCM)

7A1–4

. . . . . . . 

Control System Diagram

7A1–5

. . . . . . . . . . . . . . . 

Shift Control

7A1–6

. . . . . . . . . . . . . . . . . . . . . . . . . . 

Band Apply Control

7A1–6

. . . . . . . . . . . . . . . . . . . . 

Torque Converter Clutch Control

7A1–6

. . . . . . . . . 

Line Pressure Control

7A1–6

. . . . . . . . . . . . . . . . . . 

On–Board Diagnostic System

7A1–6

. . . . . . . . . . . 

Fail–Safe Mechanism

7A1–6

. . . . . . . . . . . . . . . . . . 

Torque Management Control

7A1–6

. . . . . . . . . . . . 

ATF Warning Control

7A1–6

. . . . . . . . . . . . . . . . . . . 

Shift Mode Control

7A1–7

. . . . . . . . . . . . . . . . . . . . . 

Gear Shift Control

7A1–8

. . . . . . . . . . . . . . . . . . . . . 

Winter Drive Mode

7A1–9

. . . . . . . . . . . . . . . . . . . . . 

Backup Mode

7A1–9

. . . . . . . . . . . . . . . . . . . . . . . . . 

Functions of Input / Output Components

7A1–10

. . 

Diagnosis

7A1–11

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

Electronic Diagnosis

7A1–11

. . . . . . . . . . . . . . . . . . . 

Check Trans Indicator

7A1–11

. . . . . . . . . . . . . . . . . . 

Diagnostic Check

7A1–11

. . . . . . . . . . . . . . . . . . . . . . 

“Check Trans” Check

7A1–12

. . . . . . . . . . . . . . . . . . 

Tech–2 OBD II Connection

7A1–13

. . . . . . . . . . . . . . 

F0: Transmission Data

7A1–17

. . . . . . . . . . . . . . . . . 

F1: PC Solenoid Data

7A1–18

. . . . . . . . . . . . . . . . . . 

OBD II Diagnostic Management System

7A1–19

. . 

16 – Terminal Data Link Connector (DLC)

7A1–20

. 

Malfunction Indicator Lamp (MIL)

7A1–21

. . . . . . . . 

Types Of Diagnostic Trouble Codes (DTCs)

7A1–21

Clear DTC

7A1–21

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 

DTC Check

7A1–22

. . . . . . . . . . . . . . . . . . . . . . . . . . . 

PCM Precaution

7A1–22

. . . . . . . . . . . . . . . . . . . . . . . 

Information On PCM

7A1–22

. . . . . . . . . . . . . . . . . . . 

Intermittent Conditions

7A1–23

. . . . . . . . . . . . . . . . . 

Transmission and PCM Identification

7A1–23

. . . . . 

Isuzu Rodeo

7A1–24

. . . . . . . . . . . . . . . . . . . . . . . . . . 

Diagnostic Trouble Code (DTC)
 Identification

7A1–25

. . . . . . . . . . . . . . . . . . . . . . . . . 

DTC P0218 Transmission Fluid Over
 Temperature

7A1–26

. . . . . . . . . . . . . . . . . . . . . . . . . . . 

DTC P0560 System Voltage Malfunction

7A1–28

. . . 

DTC P0705 Transmission Range Switch
 (Mode Switch) Illegal Position

7A1–31

. . . . . . . . . . . . 

DTC P0706 Transmission Range Switch
 (Mode Switch) Performance

7A1–34

. . . . . . . . . . . . . . 

DTC P0711 Transmission Fluid Temperature
 (TFT) Sensor Circuit Range/Performance

7A1–37

. . 

DTC P0712 Transmission Fluid Temperature
 (TFT) Sensor Circuit Low Input

7A1–40

. . . . . . . . . . . 

DTC P0713 Transmission Fluid Temperature
 (TFT) Sensor Circuit High Input

7A1–43

. . . . . . . . . . . 

DTC P0719 TCC Brake Switch Circuit High
 (Stuck On)

7A1–46

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

DTC P0722 Transmission Output Speed
 Sensor (OSS) Low Input

7A1–49

. . . . . . . . . . . . . . . . . 

DTC P0723 Transmission Output Speed
 Sensor (OSS) Intermittent

7A1–52

. . . . . . . . . . . . . . . 

DTC P0724 TCC Brake Switch Circuit
 Low (Stuck Off)

7A1–55

. . . . . . . . . . . . . . . . . . . . . . . . . 

DTC P0730 Transmission Incorrect Gear
 Ratio

7A1–57

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

DTC P0742 Torque Converter Clutch (TCC)
 Circuit Stuck On

7A1–60

. . . . . . . . . . . . . . . . . . . . . . . . 

DTC P0748 Pressure Control Solenoid (PCS)
 (Force Motor) Circuit Electrical

7A1–62

. . . . . . . . . . . 

DTC P0751 Shift Solenoid A Performance
 Without Input Speed

7A1–64

. . . . . . . . . . . . . . . . . . . . 

DTC P0753 Shift Solenoid A Electrical

7A1–66

. . . . . 

DTC P0756 Shift Solenoid B Performance
 Without Input Speed

7A1–69

. . . . . . . . . . . . . . . . . . . . 

DTC P0758 Shift Solenoid B Electrical

7A1–71

. . . . . 

DTC P1790 ROM Transmission Side Bad
 Check Sum

7A1–75

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 

DTC P1792 EEPROM Transmission Side Bad
 Check Sum

7A1–76

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 

DTC P1835 Kickdown Switch Always On

7A1–77

. . . 

DTC P1850 Brake Band Apply Solenoid
 Malfunction

7A1–79

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 

DTC P1860 TCC Solenoid Electrical

7A1–83

. . . . . . . 

DTC P1870 Transmission Component
 Slipping

7A1–86

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

7A1–2

TRANSMISSION CONTROL SYSTEM (4L30–E)

Service Precaution

WARNING: THIS VEHICLE HAS A SUPPLEMENTAL
RESTRAINT SYSTEM (SRS). REFER TO THE SRS
COMPONENT AND WIRING LOCATION VIEW IN
ORDER TO DETERMINE WHETHER YOU ARE
PERFORMING SERVICE ON OR NEAR THE SRS
COMPONENTS OR THE SRS WIRING. WHEN YOU
ARE PERFORMING SERVICE ON OR NEAR THE SRS
COMPONENTS OR THE SRS WIRING, REFER TO
THE SRS SERVICE INFORMATION. FAILURE TO
FOLLOW WARNINGS COULD RESULT IN POSSIBLE
AIR BAG DEPLOYMENT, PERSONAL INJURY, OR
OTHERWISE UNNEEDED SRS SYSTEM REPAIRS.

CAUTION: Always use the correct fastener in the
proper location. When you replace a fastener, use
ONLY the exact part number for that application.
ISUZU will call out those fasteners that require a
replacement after removal. ISUZU will also call out
the fasteners that require thread lockers or thread
sealant. UNLESS OTHERWISE SPECIFIED, do not
use supplemental coatings (Paints, greases, or other
corrosion inhibitors) on threaded fasteners or
fastener joint interfaces. Generally, such coatings
adversely affect the fastener torque and the joint
clamping force, and may damage the fastener. When
you install fasteners, use the correct tightening
sequence and specifications. Following these
instructions can help you avoid damage to parts and
systems.

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:

f

Normal mode –Normal shift pattern.

f

Winter mode –Starts in 3rd gear to reduce slippage on
ice or snow.

f

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 diagnosis
in a short time when the control system fails, thus
improving serviceability.
The major features of 4L30–E are as follows:

f

A compact structure consisting of 2 sets of planetary
gears and flat torque converter.

f

Electronic control selects the optimum shift mode
according to the driving conditions.

f

Electronic control maintains the optimum hydraulic
pressure for clutch, band brake as well as
transmission so that shift feeling is improved.

f

Two sets of planetary gears reduce friction of power
train.

Also, a lockup mechanism in the torque converter
reduces fuel consumption.

f

Wide gear ratio and high torque rate of torque
converter provide excellent starting performance.