Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Manual - part 894

7A–2

AUTOMATIC TRANSMISSION (4L30–E)

Disassembled View

7A–61

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

Disassembly

7A–61

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

Inspection And Repair

7A–62

. . . . . . . . . . . . . . . . . . 

Reassembly

7A–62

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

Adapter Case Valve Body

7A–63

. . . . . . . . . . . . . . . . 

Disassembled View

7A–63

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

Disassembly

7A–63

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

Inspection And Repair

7A–63

. . . . . . . . . . . . . . . . . . 

Reassembly

7A–63

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

Third Clutch And Sprag Unit

7A–65

. . . . . . . . . . . . . . 

Disassembled View

7A–65

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

Disassembly

7A–65

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

Inspection And Repair

7A–65

. . . . . . . . . . . . . . . . . . 

Reassembly

7A–66

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

Third Clutch

7A–67

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

Disassembled View

7A–67

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

Disassemble

7A–67

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

Inspection And Repair

7A–67

. . . . . . . . . . . . . . . . . . 

Reassembly

7A–67

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

Sprag Unit

7A–69

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

Disassembled View

7A–69

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

Disassembly

7A–69

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

Inspection And Repair

7A–69

. . . . . . . . . . . . . . . . . . 

Reassembly

7A–69

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

Second Clutch

7A–70

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

Disassembled View

7A–70

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

Disassembly

7A–70

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

Inspection And Repair

7A–71

. . . . . . . . . . . . . . . . . . 

Reassembly

7A–71

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

3–4 Accumulator Piston

7A–72

. . . . . . . . . . . . . . . . . . 

Disassembled View

7A–72

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

Disassembly

7A–72

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

Inspection And Repair

7A–73

. . . . . . . . . . . . . . . . . . 

Reassembly

7A–73

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

Reverse Clutch Piston And Center Support

7A–74

. 

Disassembled View

7A–74

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

Disassembly

7A–74

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

Inspection And Repair

7A–75

. . . . . . . . . . . . . . . . . . 

Reassembly

7A–75

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

Overrun Clutch And Turbine Shaft

7A–76

. . . . . . . . . 

Disassembled View

7A–76

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

Disassembly

7A–77

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

Inspection And Repair

7A–77

. . . . . . . . . . . . . . . . . . 

Reassembly

7A–77

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

Main Data And Specification

7A–79

. . . . . . . . . . . . . . 

Special Tools

7A–83

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

4L30–E Parts List

7A–86

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

Extension Housing Assembly Oil Seal

7A–94

. . . . . . 

Extension Housing Assembly Rear Oil Seal
 and Associated Parts

7A–94

. . . . . . . . . . . . . . . . . . 

Removal

7A–94

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

Installation

7A–94

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

Extension Housing Assembly

7A–96

. . . . . . . . . . . . . 

Extension Housing Assembly and
 Associated Parts

7A–96

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

Removal

7A–97

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

Installation

7A–97

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

Extension Housing Assembly

7A–99

. . . . . . . . . . . . . 

Extension Housing Assembly and
 Associated Parts

7A–99

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

Removal

7A–100

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

Installation

7A–100

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

Extension Housing Assembly

7A–102

. . . . . . . . . . . 

Disassembly

7A–103

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

Reassembly

7A–103

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

Inspection and Repair

7A–104

. . . . . . . . . . . . . . . . . . 

Main Data and Specifications

7A–105

. . . . . . . . . . . . . 

Special Tools

7A–106

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

7A–3

AUTOMATIC TRANSMISSION (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.

Construction

A07RS001

Legend

(1) Torque Converter Clutch (TCC)
(2) Fourth Clutch (C4)
(3) Overrun Clutch (OC)
(4) Overdrive Unit
(5) Reverse Clutch (RC)
(6) Second Clutch (C2)

(7) Third Clutch (C3)
(8) Ravigneaux Planetary Gear Set
(9) Brake Band (B)

(10) Overdrive Free Wheel (One Way Clutch)

(OFW)

(11) Principle Sprag Assembly (One Way Clutch)

(PFW)

7A–4

AUTOMATIC TRANSMISSION (4L30–E)

Range Reference Chart

C07RY00032

7A–5

AUTOMATIC TRANSMISSION (4L30–E)

Normal Operation Of 2000 4L30–E
Transmission

Torque Converter Clutch (Electronically
Controlled Capacity Clutch : ECCC)
Application Conditions:

The clutch apply is controlled by moving the converter
clutch control valve by commanding Torque Converter
Clutch (TCC) solenoid using the PWM signal.
The TCC is normally applied in 2nd, 3rd and 4th gears
only when all of the following conditions exist:
— The engine coolant temperature is above 70

°

C

(158

°

F) and ATF temperature is above 18

°

C

(64.5

°

F).

— The brake pedal is released.
— The shift pattern requests TCC apply.
Moreover, TCC is always applied in 2nd, 3rd and 4th
gears when the transmission oil temperature is above
135

°

C (275

°

F).

This mode should be canceled at 125

°

C (257

°

F).

ATF Warning Lamp

The ATF warning lamp will be constantly on (not flashing)
if the transmission oil temperature is above 145

°

C

(293

°

F).

The ATF warning lamp goes off again when the
transmission oil temperature is below 125

°

C (257

°

F).

Reverse Lock Out

With the selector lever in reverse position, the PCM will
not close the PWM solenoid until the vehicle is below 11
km/h (6.8 mph), thus preventing reverse engagement
above this speed.

Diagnosis

Introduction

The systematic troubleshooting information covered by
this Section offers a practical and systematic approach to
diagnosing 4L30–E transmission, using information that
can be obtained from road tests, electrical diagnosis, oil
pressure checks or noise evaluation.
The key to correcting a complaint is to make use of all of
the available symptoms and logically letting them direct
you to the cause.
When dealing with automatic transmission complaints, it
is best to gather as many symptoms as possible before
making the decision to remove the transmission from the
vehicle.
Frequently, the correction of the complaint does not
require removal of the transmission from the vehicle.

Driver Information

To analyze the problem fill out a complete description of
the owner’s complaint.
Please draw a circle around the right information and
complete the following form. (The next page is an
example of a completed form). You can draw a circle
around many numbers if you are not sure.