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.
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
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст