Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Manual - part 94

 

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Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Manual - part 94

 

 

4B1–1

DRIVELINE CONTROL SYSTEM

AXIOM

DRIVELINE/AXLE

DRIVELINE CONTROL SYSTEM

CONTENTS

Service Precaution

4B1–1

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

Shift On The Fly System

4B1–2

. . . . . . . . . . . . . . . . . 

Outline of Shift on The Fly System

4B1–2

. . . . . . . . . 

Functions of Indicator Lamp

4B1–4

. . . . . . . . . . . . . . 

Shift On The Fly Electrical Equipment

4B1–5

. . . . . . 

Axle Shaft Connection and Disconnection

4B1–5

. . 

Shift On The Fly Controller

4B1–7

. . . . . . . . . . . . . . . 

Shift On The Fly Controller and
 Associated Parts

4B1–7

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

Removal

4B1–7

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

Installation

4B1–7

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

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.

SECTION

4B1–2 DRIVELINE CONTROL SYSTEM

Shift On The Fly System

Outline of Shift on The Fly System

The shift on the fly system switches between 2 wheel
drive (2WD) and 4 wheel drive (4WD) electronically by the
driver turning the TOD switch on the instrument panel.
This system will control the following operations. (Shifting
between “4H” and “4L” must be performed by TOD
switch.)

1. Transmitting the torque to the front propeller shaft.
2. Connecting front wheels to, and disconnecting them

from, the front axles by axle motor actuator.

3. Indicating on instrument panel.
4. 4WD out signal to other Electronic Brake Control

Module (EBCM).

System Diagrams

412R200008

4B1–3

DRIVELINE CONTROL SYSTEM

Normal Operation

The axle disconnect controller is driven by the signal from
TOD control unit and the axle motor actuator connects (or
disconnects when the 4WD switch is deactivated) the
front wheels to the front axles.

Time Chart of Shifting Under Normal Condition

F04R200002

4WD out signal to other Electronic Brake Control
Module : 
TOD Control Unit of shift on the fly sends 4WD
out signal to other Electronic Brake Control Module as
below.

4WD out signal

(Period)

Vehicle Condition

Transfer position switch

Front axle switch

120 ms

2WD

2WD (Open)

2WD (Open)

240 ms

4WD

4WD (Close)

4WD (Close)

4B1–4 DRIVELINE CONTROL SYSTEM

Functions of Indicator Lamp

TOD Switch and Indication of Drive Mode

The TOD switch sends signals to the TOD control unit
which selects drive modes and controls the shift on the fly
system (axle disconnect : ADC).

TOD

switch

t t

Drive mode

Transfer shift condition

Transfer posi-

tion detection

Shift on the fly

TOD indicator

state

state

4HSW

4LSW

Axle

SW

ADC circuit

2H

Rear-wheel
drive (RWD)

Permissible during
driving (less than
100 km/h or 62 mph)

OFF

OFF

OFF

Turning on

electricity

TOD

Electronic
torque split
4WD (HIGH)

OFF

OFF

ON

Turning off

electricity

4WD (HIGH)
(TOD)

AT: Neutral
Brake: Applied
Th

t

(l

4L

Low range
mechanical
direct 4WD
(LOW) (4L)

The car stops (less
than 2 km/h or
1.2 mph and less than
1500 rpm)

OFF

ON

ON

Turning off

electricity

ADC: Shift on the fly

SW: Switch

Bulb check :The bulb of indicator lamp is checked for 2
seconds when ignition key is turned on.

Bulb Check
When the starter switch is turned on, the TOD indicator
lamps comes on as shown below.

NOTE: Once the starter switch is turned on, all the TOD
indicator lamps are lit for two seconds even if the transfer
lever is in any position.

C07RW016

 

 

 

 

 

 

 

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