Infiniti F50. Manual — part 749
TROUBLE DIAGNOSIS FOR ACTIVE DAMPER SUSPENSION
SCS-13
C
D
F
G
H
I
J
K
L
M
A
B
SCS
TEWM0026E
SCS-14
TROUBLE DIAGNOSIS FOR ACTIVE DAMPER SUSPENSION
CONTROL UNIT INPUT/OUTPUT SIGNAL STANDARD
Reference Values
SEIA0273E
Terminal number
Inspection location
Reference value
+
-
1,2
Ground
Steering angle sensor
When steering wheel turned slowly
Repeats Approx. 0 - 5V
3
G sensor power supply
Approx. 5V
4,6
G sensor
When stopped
Approx. 5V
7
G sensor ground
—
8,23,24
Ground
—
9,25,26
27,28,29
30,34,35
36,37,38
39,43,44
45
Shock absorber
actuator
—
10,19,31
32
Power supply
Ignition switch is ON
Battery voltage
11
Stop lamp switch
When brake pedal not depressed
Approx. 0V
When brake pedal depressed
Battery voltage
12
ECM
—
13
Select switch
Sport
Approx. 5V
Auto
Approx. 0V
14,15
-
CONSULT-II
—
16
Ground
Indicator lamp (SPORT)
Sport
Approx. 0V
Auto
Battery voltage
20
Steering angle sensor
Neutral position
Approx. 5V
21
EPS solenoid valve
0 km/h (0 MPH) (engine idling)
Approx. 1.05 A
100 km/h (62MPH)
Approx. 0.7 A
22
Vehicle speed sensor
—
42,48
Actuator
Battery voltage
TROUBLE DIAGNOSIS FOR ACTIVE DAMPER SUSPENSION
SCS-15
C
D
F
G
H
I
J
K
L
M
A
B
SCS
CONSULT-II Inspection Procedure
EES000BL
The troubleshooting system provides four functional modes - self diagnosis, data monitor, active test and con-
trol unit part number display modes.
SELF-DIAGNOSIS PROCEDURE
1.
Connect CONSULT-II to data link connector and start the engine.
2.
Touch “START”, “ACT D/SUS” and “SELF-DIAG RESULTS”.
a.
When a malfunction item is displayed, record the item.
b.
Touch “ERASE”.
3.
A self-diagnostic result is displayed again.
If “NO SELF DIAGNOSTIC FAILURE INDICATED” is displayed,
check the item first shown on the display.
Items Shown on Display
Mode type
Description
Mode selection
Display representation
SELF-DIAG RESULTS
Self-diagnosis
The desired functional
mode can easily be
selected by touching key
on CONSULT-II.
The desired functional
mode can easily be
shown on the CONSULT-
II display.
DATA MONITOR
●
Helps locate main trouble cause according to
a self-diagnostic result.
●
Provides active damper suspension control
unit input and output monitoring and print-out
function (observation and recording).
ACTIVE TEST
●
Used to precisely locate the main cause for
trouble according to the self-diagnostic result
obtained in the monitor mode.
●
Provides operational checks of indicator light
and actuator circuits.
ECU PART NUMBER
Active damper control unit part numbers are
shown on the CONSULT-II display.
PBIB0196E
Malfunctioning system or circuit
Detecting conditions
VEHICLE SPEED SEN
●
Input signal does not change for some length of time while driving.
●
Input signal changes abruptly while driving.
VERTI G SENSOR F
●
Voltage is greater than or less than the standard value.
VERTI G SENSOR R/R
VERTI G SENSOR R/L
STEERING ANGLE SEN
[ANG SIGNAL] (.a)
Input signal does not change for some length of time while driving at speeds greater
than 60 km/h (37 MPH).
STEERING ANGLE SEN
[NEUT SIGNAL] (.b)
●
Neutral (“ON”) signal is not entered at all while driving a distance of more than 10 km
(6 miles).
●
Neutral (“ON”) signal is not entered at all when steering wheel is turned at least 360
°
.
●
Neutral (“ON”) signal is entered when steering wheel is turned at least 50
°
.
SCS-16
TROUBLE DIAGNOSIS FOR ACTIVE DAMPER SUSPENSION
DATA MONITOR PROCEDURE
1.
Connect CONSULT-II to data link connector, then start the
engine.
2.
Touch “START”, “ACT D/SUS” and “DATA MONITOR”.
3.
Select the signal to be monitored.
a.
When “ALL SIGNALS” is selected, touch “START”.
b.
When “SELECTION FROM MENU” is to be selected, touch
“SETTING”. “MONITOR ITEM MENU” will then be indicated on
the display. Touch the item to be monitored, then “ENTER” and
“START”.
c.
Print out the data if necessary.
DATA MONITOR MODE
PBIB0196E
Monitored item
Display
Data item selection
Remarks
Main item
Item menu
selection
Vehicle speed sensor
VHCL SPEED SE
[km/h] or [mph]
×
×
—
Vertical G sensor front
VERTI G SE F [G]
×
×
—
Vertical G sensor rear right side
VERTI G SE RR [G]
×
×
—
Vertical G sensor rear left side
VERTI G SE RL [G]
×
×
—
Steering angle sensor (steering
angle signal)
STEERING ANG [
°
]
×
×
When the battery is disconnected
and then reconnected, an abnormal
value is displayed until the straight
ahead position (0
°
) is set during
driving.
Active damper select switch
SELECT SWITCH [AUTO-
SPORT]
×
×
—
Stop lamp switch
STOP LAMP SW [ON-OFF]
×
×
—
Steering angle sensor (steering
neutral signal)
NEUTRAL SIG [ON-OFF]
×
×
—
Damper motor front right
DAMP MTR F/R [Step]
×
×
—
Damper motor front left
DAMP MTR F/L [Step]
×
×
—
Damper motor rear right
DAMP MTR R/R [Step]
×
×
—
Damper motor rear left
DAMP MTR R/L [Step]
×
×
—
Power steering solenoid valve
POWER STR SOL [A]
×
×
EPS solenoid control current flow
from control unit
Active damper indicator lamp
(SPORT)
INDICATOR [ON-OFF]
×
×
—
Voltage
■
VOLTAGE [V]
—
×
Voltage measured by the voltage
probe
Pulse
■
PULSE [msec] or [Hz] or [%]
—
×
Pulse width, frequency or duty cycle
measured by the pulse probe. Only
“#” is displayed if item is unable to
be measured.
Figures with “#” s are temporary
ones. They are the same figures as
an actual piece and data which was
just previously measured.
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