Infiniti Q45. Manual — part 881
TROUBLE DIAGNOSIS FOR SYSTEM
STC-27
[WITHOUT REAR ACTIVE STEER]
C
D
E
F
H
I
J
K
L
M
A
B
STC
Component Inspection
NGS000CT
POWER STEERING SOLENOID VALVE
1.
Turn ignition switch “OFF”.
2.
Disconnect power steering solenoid valve harness connector.
3.
Check resistance between power steering solenoid valve con-
nector (A) terminals 1 and 2.
4.
Check power steering solenoid valve connector (A) by listening
for its operation sound while applying battery voltage to power
steering solenoid valve connector (A) terminals 1 (positive) and
2 (negative).
5.
If NG, replace power steering solenoid valve.
1 - 2
: Approx. 4 - 6
Ω
SGIA1412E
SGIA1419E
STC-28
[WITHOUT REAR ACTIVE STEER]
TROUBLE DIAGNOSIS FOR SYMPTOMS
TROUBLE DIAGNOSIS FOR SYMPTOMS
PFP:00007
Hard Steering When Fully Turning the Steering Wheel
NGS0006F
DIAGNOSTIC PROCEDURE
1.
CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis. Refer to
STC-13, "SELF-DIAG RESULT MODE"
.
Is any malfunction detected by self-diagnosis?
YES
>> Check the malfunctioning system.
NO
>> GO TO 2.
2.
CHECK SYSTEM FOR VEHICLE SPEED SENSOR
Perform trouble diagnosis for vehicle speed sensor system. Refer to
STC-19, "Vehicle Speed Sensor (VEHI-
.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace damaged parts.
3.
CHECK SYSTEM FOR POWER STEERING SOLENOID VALVE
Perform trouble diagnosis for power steering solenoid valve system. Refer to
.
OK or NG
OK
>> GO TO 4.
NG
>> Repair or replace damaged parts.
4.
CHECK ACTIVE DAMPER SUSPENSION CONTROL UNIT
Check active damper suspension control unit input/output signal. Refer to
STC-12, "Active Damper Suspen-
sion Control Unit Input/Output Signal Reference Values"
OK or NG
OK
>> GO TO 5.
NG
>> Check active damper suspension control unit pin terminals for damage or loose connection with
harness connector. If any items are damaged, repair or replace damaged parts.
5.
CHECK SYMPTOM
Check again.
OK or NG
OK
>> INSPECTION END
NG
>> Replace active damper suspension control unit. Refer to
TROUBLE DIAGNOSIS FOR SYMPTOMS
STC-29
[WITHOUT REAR ACTIVE STEER]
C
D
E
F
H
I
J
K
L
M
A
B
STC
Light Steering When Driving at a High Speed
NGS0006G
DIAGNOSTIC PROCEDURE
1.
CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis. Refer to
STC-13, "SELF-DIAG RESULT MODE"
Is any malfunction detected by self-diagnosis?
YES
>> Check the malfunctioning system.
NO
>> GO TO 2.
2.
CHECK SYSTEM FOR VEHICLE SPEED SENSOR
Perform trouble diagnosis for vehicle speed sensor system. Refer to
STC-19, "Vehicle Speed Sensor (VEHI-
.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace damaged parts.
3.
CHECK SYSTEM FOR POWER STEERING SOLENOID VALVE
Perform trouble diagnosis for power steering solenoid valve system. Refer to
OK or NG
OK
>> GO TO 4.
NG
>> Repair or replace damaged parts.
4.
CHECK ACTIVE DAMPER SUSPENSION CONTROL UNIT
Check active damper suspension control unit input/output signal. Refer to
STC-12, "Active Damper Suspen-
sion Control Unit Input/Output Signal Reference Values"
OK or NG
OK
>> GO TO 5.
NG
>> Check active damper suspension control unit pin terminals for damage or loose connection with
harness connector. If any items are damaged, repair or replace damaged parts.
5.
CHECK SYMPTOM
Check again.
OK or NG
OK
>> INSPECTION END
NG
>> Replace active damper suspension control unit. Refer to
STC-30, "Removal and Installation"
.
STC-30
[WITHOUT REAR ACTIVE STEER]
CONTROL UNIT
CONTROL UNIT
PFP:28400
Removal and Installation
NGS0005R
REMOVAL
1.
Turn the ignition switch OFF and disconnect the battery cable from the negative terminal.
2.
Remove the trunk side finisher. Refer to
EI-60, "Removal and Installation"
3.
Disconnect the two active damper suspension control unit con-
nectors.
4.
Remove the active damper suspension control unit bolts.
5.
Remove the active damper suspension control unit (1).
INSTALLATION
Note the following, and installation is the reverse order of removal.
●
When installing the active damper suspension control unit, tighten bolts to the specified torque.
SGIA1423E
Active damper suspension control unit bolts
: 8.3 N·m (0.85 kg-m, 73 in-lb)
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