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