Infiniti Q45. Manual - part 896
TROUBLE DIAGNOSIS FOR SYMPTOMS
STC-87
[WITH REAR ACTIVE STEER]
C
D
E
F
H
I
J
K
L
M
A
B
STC
The Steering Force of Steering Wheel Is Not Changed Smoothly According to
the Vehicle Speed
NGS00093
SYMPTOM:
The steering force does not change smoothly according to the vehicle speed (Heavy steering force
with the vehicle stopped/Light handle operation during high-speed driving).
DIAGNOSTIC PROCEDURE
1.
CHECK SYSTEM FOR VEHICLE SPEED SENSOR
Perform trouble diagnosis for vehicle speed sensor system. Refer to
STC-72, "DTC C1919 VEHICLE SPEED
.
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace damaged parts.
2.
CHECK SYSTEM FOR STOP LAMP SWITCH
Perform trouble diagnosis for stop lamp switch. Refer to
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 SYSTEM FOR RAS ACTUATOR ASSEMBLY
Perform trouble diagnosis for RAS actuator assembly system. Refer to
STC-76, "RAS Actuator Assembly"
OK or NG
OK
>> GO TO 4.
NG
>> Repair or replace damaged parts.
5.
CHECK RAS CONTROL UNIT
Check RAS control unit input/output signal. Refer to
STC-47, "RAS Control Unit Input/Output Signal Refer-
.
OK or NG
OK
>> GO TO 6.
NG
>> Check RAS control unit pin terminals for damage or loose connection with harness connector. If
any items are damaged, repair or replace damaged parts.
6.
CHECK SYMPTOM
Check again.
OK or NG
OK
>> INSPECTION END
NG
>> Replace RAS control unit. Refer to
STC-90, "Removal and Installation"
.