Infiniti Q45. Manual — part 877
TROUBLE DIAGNOSIS
STC-11
[WITHOUT REAR ACTIVE STEER]
C
D
E
F
H
I
J
K
L
M
A
B
STC
TGWM0076E
STC-12
[WITHOUT REAR ACTIVE STEER]
TROUBLE DIAGNOSIS
Active Damper Suspension Control Unit Input/Output Signal Reference Values
NGS00064
ACTIVE DAMPER SUSPENSION CONTROL UNIT INSPECTION TABLE
Specifications with CONSULT-II
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.
Monitor item [Unit]
Content
Condition
Display value
VHCL SPEED SE [km/h]
or [mph]
Wheel speed
Vehicle stopped
0 km/h (0 MPH)
Vehicle running
CAUTION:
Check air pressure of tire under standard condition.
Approximately equal
to the indication on
speedometer (Inside
of
±
10%)
POWER STR SOL [A]
Monitored value of cur-
rent at power steering
solenoid valve
Vehicle speed: 0 km/h (0 MPH)
(Engine is running)
Approx. 1.10 A
Vehicle speed: 100 km/h (62 MPH)
Approx. 0.54 A
ENGINE SPEED [rpm]
Engine speed
Engine stopped
0 rpm
Engine running
(Engine speed: 400 rpm or more)
Approximately equal
to the indication on
tachometer
SGIA1399E
Terminal
Wire
color
Item
Condition
Data (Approx.)
8
B
Ground
Always
0 V
10
GY
Power supply
Ignition switch: ON
Battery voltage
Ignition switch: OFF
0 V
12
W/G
Engine speed
Engine speed: At idle
(Warm-up condition)
Engine speed: Approx. 2,000 rpm
(Warm-up condition)
14
BR/Y
Data link connector (RX)
—
—
15
P
Data link connector (TX)
—
—
PBIA3654J
PBIA3655J
TROUBLE DIAGNOSIS
STC-13
[WITHOUT REAR ACTIVE STEER]
C
D
E
F
H
I
J
K
L
M
A
B
STC
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)
NGS00065
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"
.
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”).
19
Y/G
Power supply
(Memory back-up)
Ignition switch: ON
Battery voltage
Ignition switch: OFF
21
OR/L
Power steering solenoid valve
Vehicle speed: 0 km/h (0 MPH)
(Engine is running)
4.4 - 6.6 V
Vehicle speed: 100 km/h (62 MPH)
2.4 - 3.6 V
22
PU/W
Vehicle speed
Vehicle speed: 40 km/h (25 MPH)
CAUTION:
Check air pressure of tire under
standard condition.
23
B
Ground
Always
0 V
24
B
Ground
Always
0 V
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
Terminal
Wire
color
Item
Condition
Data (Approx.)
SEIA0775E
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.
STC-14
[WITHOUT REAR ACTIVE STEER]
TROUBLE DIAGNOSIS
Display Item List
CAUTION:
Active damper suspension system shall be checked when having indications that are not included in the 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.
DATA MONITOR MODE
Operation Procedure
1.
Perform “CONSULT-II Start Procedure”. Refer to
GI-36, "CONSULT-II Start Procedure"
2.
Touch “DATA MONITOR”.
3.
Select from “SELECT MONITOR ITEM”, screen of data monitor mode is displayed.
NOTE:
When malfunction is detected, CONSULT-II performs REAL-TIME DIAGNOSIS.
Also, any malfunction detected while in this mode will be displayed in real time.
Display Item List
Self-Diagnostic Procedure
NGS0006C
SELF-DIAGNOSTIC PROCEDURE (WITH CONSULT-II)
Refer to
STC-13, "SELF-DIAG RESULT MODE"
.
SELF-DIAGNOSTIC PROCEDURE (WITHOUT CONSULT-II)
Description
The SPORT indicator lamp in the combination meter will flicker according to the self-diagnostic results. As for
the details of the SPORT indicator lamp flickering patterns, refer to
STC-15, "Diagnostic Procedure"
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.
STC-19, "Vehicle
Speed Sensor
(VEHICLE SPEED
SEN)"
Monitored item (Unit)
Remarks
VHCL SPEED SE [km/h] or [mph]
Vehicle speed calculated by combination meter.
POWER STR SOL [A]
Power steering solenoid controlling current that active damper suspension control unit outputs
is displayed.
ENGINE SPEED [rpm]
Engine speed calculated by ECM.
Voltage [V]
The value measured by the voltage probe is displayed.
Frequency [Hz]
The value measured by the pulse probe is displayed.
DUTY-HI (high) [%]
DUTY-LOW (low) [%]
PLS WIDTH-HI [msec]
PLS WIDTH-LOW [msec]
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