Infiniti Q45. Manual — part 801
TROUBLE DIAGNOSIS
SCS-21
C
D
F
G
H
I
J
K
L
M
A
B
SCS
Specifications Between Active Damper Suspension Control Unit Terminals
ACTIVE DAMPER SUSPENSION CONTROL UNIT CONNECTOR LAYOUT
Data are reference value and are measured between each terminal and ground.
SGIA1399E
Terminal
Wire
color
Item
Condition
Data (Approx.)
1
L/R
Steering angle sensor 1
Steering wheel turned slowly
Repeats 0 - 5 V
Steering wheel stopped
0 V
2
Y/B
Steering angle sensor 2
Steering wheel turned slowly
Repeats 0 - 5 V
Steering wheel stopped
0 V
3
W
Front and rear vertical G sensor
power supply
Ignition switch: ON
5 V
Ignition switch: OFF
0 V
4
R/G
Front vertical G sensor
Vehicle speed: 0 km/h (0 MPH)
(Engine is running)
2.5 V
Vehicle running
Repeats 0 - 5 V
5
W/L
Rear vertical G sensor
Vehicle speed: 0 km/h (0 MPH)
(Engine is running)
2.5 V
Vehicle running
Repeats 0 - 5 V
7
R/Y
Front and rear vertical G sensor
ground
Vehicle speed: 25 km/h (16 MPH) or
more
0 V
8
B
Ground
Always
0 V
9
R
Front shock absorber actuator RH
(A)
Vehicle speed: 25 km/h (16 MPH) or
more
Repeats 0 V - battery voltage
10
GY
Power supply
Ignition switch: ON
Battery voltage
Ignition switch: OFF
0 V
11
L/B
Stop lamp switch
Brake pedal: Depressed
Battery voltage
Brake pedal: Released
0 V
12
W/G
Engine speed
Engine speed: At idle
(Warm-up condition)
Engine speed: Approx. 2,000 rpm
(Warm-up condition)
PBIA3654J
PBIA3655J
SCS-22
TROUBLE DIAGNOSIS
13
P/B
Active damper suspension select
switch
Engine running
Active damper sus-
pension select
switch: AUTO
0 V
Active damper sus-
pension select
switch: SPORT
5 V
14
BR/Y
Data link connector (RX)
—
—
15
P
Data link connector (TX)
—
—
16
G/B
SPORT indicator lamp
SPORT indicator lamp: ON
0 V
SPORT indicator lamp: OFF
Battery voltage
19
Y/G
Power supply
(Memory back-up)
Ignition switch: ON
Battery voltage
Ignition switch: OFF
20
G/R
Steering angle sensor
(neutral)
Engine running
Straight-ahead
5 V
Steering wheel
turned
0 V
22
PU/W
Vehicle speed
Vehicle speed: 40 km/h (25 MPH)
23
B
Ground
Always
0 V
24
B
Ground
Always
0 V
25
BR
Front shock absorber actuator LH
(A)
Vehicle speed: 25 km/h (16 MPH) or
more
Repeats 0 V - battery voltage
26
LG
Front shock absorber actuator LH
(B')
Vehicle speed: 25 km/h (16 MPH) or
more
Repeats 0 V - battery voltage
27
R/B
Rear shock absorber actuator RH
(B)
Vehicle speed: 25 km/h (16 MPH) or
more
Repeats 0 V - battery voltage
28
L/R
Rear shock absorber actuator LH
(A')
Vehicle speed: 25 km/h (16 MPH) or
more
Repeats 0 V - battery voltage
29
PU
Rear shock absorber actuator LH
(B)
Vehicle speed: 25 km/h (16 MPH) or
more
Repeats 0 V - battery voltage
30
Y/B
Rear shock absorber actuator LH
(B')
Vehicle speed: 25 km/h (16 MPH) or
more
Repeats 0 V - battery voltage
31
GY
Power supply
Ignition switch: ON
Battery voltage
Ignition switch: OFF
0 V
32
GY
Power supply
Ignition switch: ON
Battery voltage
Ignition switch: OFF
0 V
34
R/W
Front shock absorber actuator LH
(A')
Vehicle speed: 25 km/h (16 MPH) or
more
Repeats 0 V - battery voltage
35
SB
Rear shock absorber actuator RH
(A)
Vehicle speed: 25 km/h (16 MPH) or
more
Repeats 0 V - battery voltage
36
B/W
Rear shock absorber actuator RH
(B')
Vehicle speed: 25 km/h (16 MPH) or
more
Repeats 0 V - battery voltage
37
B/P
Rear shock absorber actuator LH
(A)
Vehicle speed: 25 km/h (16 MPH) or
more
Repeats 0 V - battery voltage
38
L
Front shock absorber actuator RH
(B)
Vehicle speed: 25 km/h (16 MPH) or
more
Repeats 0 V - battery voltage
Terminal
Wire
color
Item
Condition
Data (Approx.)
SEIA0775E
TROUBLE DIAGNOSIS
SCS-23
C
D
F
G
H
I
J
K
L
M
A
B
SCS
CAUTION:
When using circuit tester or oscilloscope to measure voltage for inspection, be sure not to extend forcibly any connector ter-
minals.
CONSULT-II Function (ACT D/SUS)
NES000AR
FUNCTION
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II SETTING PROCEDURE
Refer to
GI-36, "CONSULT-II Start Procedure"
.
39
OR
Front shock absorber actuator RH
(A')
Vehicle speed: 25 km/h (16 MPH) or
more
Repeats 0 V - battery voltage
42
L/R
Front shock absorber actuator
power supply
Ignition switch: ON
Battery voltage
Ignition switch: OFF
0 V
43
G
Front shock absorber actuator RH
(B')
Vehicle speed: 25 km/h (16 MPH) or
more
Repeats 0 V - battery voltage
44
L/W
Front shock absorber actuator LH
(B)
Vehicle speed: 25 km/h (16 MPH) or
more
Repeats 0 V - battery voltage
45
G/Y
Rear shock absorber actuator RH
(A')
Vehicle speed: 25 km/h (16 MPH) or
more
Repeats 0 V - battery voltage
48
B/R
Rear shock absorber actuator
power supply
Ignition switch: ON
Battery voltage
Ignition switch: OFF
0 V
Terminal
Wire
color
Item
Condition
Data (Approx.)
Diagnostic test mode
Function
Reference
page
Self-diagnostic results
●
Self-diagnostic results can be read and erased quickly.
Data monitor
●
Input/Output data in the active damper suspension control unit can be read.
Active test
●
Diagnostic Test Mode in which CONSULT-II drives some actuators apart from
the active damper suspension control unit and also shifts some parameters in a
specified range.
ECU part number
●
Active damper suspension control unit part number can be read.
SCS-24
TROUBLE DIAGNOSIS
SELF-DIAG RESULT MODE
Operation Procedure
1.
Perform “CONSULT-II Start Procedure”. Refer to
GI-36, "CONSULT-II Start Procedure"
2.
With engine at idle, touch “SELF-DIAG RESULTS”.
Display shows malfunction experienced since the last erasing operation.
NOTE:
The details for “TIME” are as follows:
●
“0”: Error currently detected with active damper suspension control unit.
●
Except for “0”: Error detected in the past and memorized with active damper suspension control unit.
Detects frequency of driving after DTC occurs (frequency of turning ignition switch “ON/OFF”).
Display Item List
How to Erase Self-diagnostic Results
1.
Perform applicable inspection of malfunctioning item and then repair or replace.
2.
Start engine and select “SELF-DIAG RESULTS” mode for “ACT D/SUS” with CONSULT-II.
3.
Touch “ERASE” on CONSULT-II screen to erase DTC memory.
CAUTION:
If memory cannot be erased, perform applicable diagnosis.
Items
(CONSULT-II screen terms)
Diagnostic item is detected when...
Check item
VEHICLE SPEED SEN
●
Input signal does not change for some length of while driving.
●
Input signal change abruptly while driving.
SCS-32, "Vehicle
Speed Sensor
(VEHICLE SPEED
SEN)"
STEERING ANGLE SEN
[ANG SIGNAL]
Input signal does not change for some length of time while driving at 60 km/h (37
MPH) or more.
SCS-34, "Steering
Angle Sensor
(STEERING
ANGLE SEN)"
STEERING ANGLE SEN
[NEUT SIGNAL]
●
When driven straight ahead at least at 10 km/h (6 MPH) with no neutral signal.
●
When the steering wheel is turned by 360
°
or more with no neutral signal.
●
When the steering wheel is turned by 50
°
or more with neutral signal at all
times.
SCS-34, "Steering
Angle Sensor
(STEERING
ANGLE SEN)"
VERTI G SENSOR FL
Front vertical G sensor is malfunctioning, or signal line of front vertical G sensor is
open or shorted.
SCS-37, "Vertical
G Sensor (VERTI
G SENSOR)"
VERTI G SENSOR RR
Rear vertical G sensor is malfunctioning, or signal line of rear vertical G sensor is
open or shorted.
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