Isuzu Amigo / Axiom / Trooper / Rodeo / VehiCross. Manual — part 1118
3F–2
INTELLIGENT SUSPENSION
826R100004
INTELLIGENT SUSPENSION
3F–3
PIN ASSIGNMENT TABLE
NC: NO CONNECTION
System Components
Control Unit, 3 Vertical G-sensors, Lateral G-sensor, 4
Actuators, 4 Adjustable Damping Force Shock
Absorbers, and Warning Lamp.
Control Unit
The Control Unit consists of Adjustable Damping Force
Shock Absorber control circuits, fault detector, and a
fail-safe. It drives the actuator according to the signal
from each sensor.
The Control Unit has a self-diagnosing function which
can indicate faulty circuits during diagnosis.
The Control Unit is mounted in the center of the
instrument panel.
Actuator
Front actuators installed on front shock absorbers and
rear actuator installed inside rear shock absorbers
control damping force of the shock absorber by the
Control Unit signal.
Adjustable Damping Force Shock Absorber
This type of shock absorber is found in vehicles
equipped with Intelligent Suspention Control System.
The damping force is adjusted accordingly by the
Control Unit.
Warning Lamp and Mode Lamp
821R100008
Vehicles equipped with the Intelligent Suspension have
an amber warning lamp in the instrument panel. The
warning lamp will illuminate if a malfunction in the
Intelligent Suspension System is detected by the
Control Unit. In case of an important electronic
malfunction, the Control Unit will turn“ON" the warning
lamp.
The comfort mode or the sports mode can be selected.
If the comfort mode is selected, the mode lamp turns off
and if the sport mode is selected, the mode lamp turns
on.
PIN
No.
NAME
PIN
No.
NAME
PIN
No.
NAME
PIN
No.
NAME
1
GND
17
KI-FR B
33
KI-RR PSW
49
STOP
2
NC
18
KI-FR D
34
KI-RL Vcc
50
T-SW
3
Vdd
19
KI-FL B
35
KI-FR GND
51
M-SW
4
KI-FR A
20
KI-FL D
36
KI-FR Vs
52
NC
5
KI-FR C
21
KI-RR B
37
KI-FL PSW
53
NC
6
KI-FL A
22
KI-RR D
38
KI-FL Vs
54
NC
7
KI-FL C
23
KI-RL B
39
KI-FL GND
55
G3 GND
8
KI-RR A
24
KI-RL D
40
KI-RR GND
56
G3 Vs
9
KI-RR C
25
Vig
41
KI-RL PSW
57
NC
10
KI-RL A
26
GND
42
KI-RL GND
58
NC
11
KI-RL C
27
KI-FR Vcc
43
M.L
59
E/G
12
Vbat
28
KI-FR Vout
44
G3 Vcc
60
W.L
13
GND
29
KI-FR PSW
45
G3 Vout
61
NC
14
GND
30
KI-FL Vout
46
NC
62
GND
15
NC
31
KI-FL Vcc
47
NC
63
NC
16
Vdd
32
KI-RR Vcc
48
VSP
64
NC
3F–4
INTELLIGENT SUSPENSION
Vertical G-Sensor
Front G-sensors installed inside front actuators and the
rear G-sensor installed on the rear left frame side detect
the vehicle vertical gravity and send a signal to the
Control Unit.
Lateral G-Sensor
The G-sensor installed inside the Control Unit detects
the vehicle turning speed and sends a signal to the
Control Unit.
Acronyms and Abbreviations
Several acronyms and abbreviations are commonly
used throughout this section:
BATT
Battery
DLC
Data Link Connector
DTC
Diagnostic Trouble Code
FL
Front Left
FR
Front Right
GND
Ground
HARN
Harness
IG
Ignition
PCM
Powertrain Control Module
RL
Rear Left
RR
Rear Right
SW
Switch
W/L
Warning Lamp
General Diagnosis
General Information
Intelligent Suspension Control troubles can be classified
into two types, those which can be detected by the
warning lamp and those which can be detected as a
vehicle abnormality by the driver.
In either case, locate the fault in accordance with
the“BASIC DIAGNOSTIC FLOWCHART" and repair.
Please refer to Section 3 for the diagnosis of abnormal
noise, vehicle pulls, excessive tire wear, wheel hop and
shimmy, shake or vibration.
Service Precautions
Required Tools and Items:
• Box Wrench
• Special Tool
Some diagnosis procedures in this section require the
installation of a special tool.
J-39200 High Impedance Multimeter
When circuit measurements are requested, use a
circuit tester with high impedance.
Computer System Service Precautions
The Intelligent Suspension Control interfaces directly
with the Control Unit which is similar to the Powertrain
Control Module. These modules are designed to
withstand normal current draws associated with vehicle
operation. However care must be taken to avoid
overloading any of the Control Unit circuits. In testing for
opens or shorts, do not ground or apply voltage to any
of the circuits unless instructed to do so by the
appropriate diagnostic procedure. These circuits should
only be tested with a high impedance multimeter
(J-39200) or special tools as described in this section.
Power should never be removed or applied to any
control module with the ignition in the “ON"
position.Before removing or connecting battery cables,
fuses or connectors, always turn the ignition switch to
the“OFF" position.
General Service Precautions
The following are general precautions which should be
observed when servicing and diagnosing the Intelligent
Suspension Control and/or other vehicle systems.
Failure to observe these precautions may result in
Intelligent Suspension Control damage.
• If welding work is to be performed on the vehicle
using an electric arc welder, the Control Unit
connectors should be disconnected before the
welding operation begins.
• The Control Unit connectors should never be
connected or disconnected with the ignition“ON".
Parts Handling
Be careful when handling the actuator, control unit, or
G-sensor. They should not be dropped or thrown,
because the semi-conductor G-sensor tip damage may
result.
INTELLIGENT SUSPENSION
3F–5
FLASHING CODES
1. ON BOARD DIAGNOSIS (SELF-DIAGNOSIS)
1. The Control Unit conducts a self-test of most of
the wiring and components in the system each
time the key is turned ON. If a fault is detected
the Control Unit will store a Diagnostic Trouble
Code (DTC) in memory.
2. The warning lamp turns on until the fault is
repaired and the Control Unit memory is
cleared.
2. DIAGNOSTIC TROUBLE CODES (DTC)
1 The DTC can be flashed by connecting
terminals 3 and 4 or 3 and 5 of the Data Link
Connector (C-34).
350R100002
Normal
F03RY00001
Abnormal
F03RY00002
EndOFCallout
Legend
(1) Diagnostic Trouble Code 2
(2) Diagnostic Trouble Code 3
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