Infiniti G35 (V35) Sedan. Manual — part 1278

STC-2

4WAS FRONT ACTUATOR NEUTRAL POSI-
TION ADJUSTMENT : Special Repair Require-
ment (Pattern 2) . . . . . . . . . . . . . ..

4WAS FRONT ACTUATOR NEUTRAL POSI-
TION ADJUSTMENT : Special Repair Require-
ment (Pattern 3) . . . . . . . . . . . . . ..

4WAS FRONT ACTUATOR NEUTRAL POSI-
TION ADJUSTMENT : Special Repair Require-
ment (Pattern 4) . . . . . . . . . . . . . ..

FUNCTION DIAGNOSIS . . . . . . . .

4WAS SYSTEM . . . . . . . . . . . . .

System Diagram . . . . . . . . . . . . . .

System Description . . . . . . . . . . . . .

Component Parts Location . . . . . . . . . .

Component Description . . . . . . . . . . ..

EPS SYSTEM . . . . . . . . . . . . .

System Diagram . . . . . . . . . . . . . .

System Description . . . . . . . . . . . . .

Component Parts Location . . . . . . . . . .

Component Description . . . . . . . . . . ..

DIAGNOSIS SYSTEM (4WAS FRONT CON-
TROL UNIT) . . . . . . . . . . . . . ...

CONSULT-III Function [4WAS(FRONT)] . . . ....

DIAGNOSIS SYSTEM (4WAS MAIN CON-
TROL UNIT) . . . . . . . . . . . . . ...

CONSULT-III Function [4WAS(MAIN)/RAS/HI-
CAS] . . . . . . . . . . . . . . . . . ...

COMPONENT DIAGNOSIS . . . . . .

C1621, C1622 4WAS FRONT ACTUATOR . ..

Description . . . . . . . . . . . . . . . ..

DTC Logic . . . . . . . . . . . . . . . ...

Diagnosis Procedure . . . . . . . . . . . ..

Component Inspection (4WAS Front Motor) . . ..

Special Repair Requirement . . . . . . . . ...

C1627 4WAS FRONT ACTUATOR . . . . ...

Description . . . . . . . . . . . . . . . ..

DTC Logic . . . . . . . . . . . . . . . ...

Diagnosis Procedure . . . . . . . . . . . ..

Special Repair Requirement . . . . . . . . ...

C1628 4WAS FRONT ACTUATOR . . . . ...

Description . . . . . . . . . . . . . . . ..

DTC Logic . . . . . . . . . . . . . . . ...

Diagnosis Procedure . . . . . . . . . . . ..

Component Inspection (Front Wheel Steering An-
gle Sensor) . . . . . . . . . . . . . . . .

Special Repair Requirement . . . . . . . . ...

C1631, C1632 4WAS FRONT CONTROL
UNIT . . . . . . . . . . . . . . . . ...

Description . . . . . . . . . . . . . . . ..

DTC Logic . . . . . . . . . . . . . . . ...

Diagnosis Procedure . . . . . . . . . . . ...

Special Repair Requirement . . . . . . . . ...

C1633 4WAS FRONT CONTROL UNIT . . .

Description . . . . . . . . . . . . . . . ..

DTC Logic . . . . . . . . . . . . . . . ...

Diagnosis Procedure . . . . . . . . . . . ...

Special Repair Requirement . . . . . . . . ...

C1651 IGNITION POWER SUPPLY . . . . ..

Description . . . . . . . . . . . . . . . ..

DTC Logic . . . . . . . . . . . . . . . ...

Diagnosis Procedure . . . . . . . . . . . ...

Special Repair Requirement . . . . . . . . ...

C1652 4WAS FRONT MOTOR POWER SUP-
PLY . . . . . . . . . . . . . . . . .

Description . . . . . . . . . . . . . . . ..

DTC Logic . . . . . . . . . . . . . . . ...

Diagnosis Procedure . . . . . . . . . . . ...

Special Repair Requirement . . . . . . . . ...

C1654 4WAS FRONT ACTUATOR RELAY . .

Description . . . . . . . . . . . . . . . ..

DTC Logic . . . . . . . . . . . . . . . ...

Diagnosis Procedure . . . . . . . . . . . ...

Special Repair Requirement . . . . . . . . ...

C1655 4WAS FRONT DRIVER . . . . . . .

Description . . . . . . . . . . . . . . . ..

DTC Logic . . . . . . . . . . . . . . . ...

Diagnosis Procedure . . . . . . . . . . . ...

Special Repair Requirement . . . . . . . . ...

C1661 4WAS FRONT LOCK SOLENOID
VALVE . . . . . . . . . . . . . . . ...

Description . . . . . . . . . . . . . . . ..

DTC Logic . . . . . . . . . . . . . . . ...

Diagnosis Procedure . . . . . . . . . . . ...

Component Inspection (4WAS Front Lock Sole-
noid Valve) . . . . . . . . . . . . . . . ..

Special Repair Requirement . . . . . . . . ...

C1667 LOCK INSERTION . . . . . . . . .

Description . . . . . . . . . . . . . . . ..

DTC Logic . . . . . . . . . . . . . . . ...

Diagnosis Procedure . . . . . . . . . . . ...

Special Repair Requirement . . . . . . . . ...

C1668 LOCK HOLDER GAP DETECT . . . .

Description . . . . . . . . . . . . . . . ..

DTC Logic . . . . . . . . . . . . . . . ...

Diagnosis Procedure . . . . . . . . . . . ...

Special Repair Requirement . . . . . . . . ...

C1669 INCOMPLETE LOCK RELEASE . . ...

Description . . . . . . . . . . . . . . . ..

DTC Logic . . . . . . . . . . . . . . . ...

Diagnosis Procedure . . . . . . . . . . . ...

Special Repair Requirement . . . . . . . . ...

STC-3

C

D

E

F

H

I

J

K

L

M

A

B

STC

N

O

P

C1671 ACTUATOR ADJUSTMENT NOT
PERFORMED . . . . . . . . . . . . . .

Description . . . . . . . . . . . . . . . ..

DTC Logic . . . . . . . . . . . . . . . ...

Diagnosis Procedure . . . . . . . . . . . ...

Special Repair Requirement . . . . . . . . ...

C1672 INCOMPLETE ACTUATOR ADJUST-
MENT . . . . . . . . . . . . . . . . ..

Description . . . . . . . . . . . . . . . ..

DTC Logic . . . . . . . . . . . . . . . ...

Diagnosis Procedure . . . . . . . . . . . ...

Special Repair Requirement . . . . . . . . ...

C1684, C1685 4WAS MAIN CONTROL UNIT
COMMUNICATION . . . . . . . . . . . .

Description . . . . . . . . . . . . . . . ..

DTC Logic . . . . . . . . . . . . . . . ...

Diagnosis Procedure . . . . . . . . . . . ...

Component Inspection [ABS Actuator and Electric
Unit (Control Unit)] . . . . . . . . . . . . ..

Component Inspection (Yaw Rate/Side G Sensor)

.

Special Repair Requirement . . . . . . . . ...

C1686 4WAS MAIN CONTROL UNIT . . . .

Description . . . . . . . . . . . . . . . ..

DTC Logic . . . . . . . . . . . . . . . ...

Diagnosis Procedure . . . . . . . . . . . ...

U1000, U1002 4WAS COMMUNICATION
CIRCUIT . . . . . . . . . . . . . . . .

Description . . . . . . . . . . . . . . . ..

DTC Logic . . . . . . . . . . . . . . . ...

Diagnosis Procedure . . . . . . . . . . . ...

Component Inspection [ABS Actuator and Electric
Unit (Control Unit)] . . . . . . . . . . . . ..

Component Inspection (Yaw Rate/Side G Sensor)

.

Special Repair Requirement . . . . . . . . ...

U1010 4WAS COMMUNICATION CIRCUIT . ..

Description . . . . . . . . . . . . . . . ..

DTC Logic . . . . . . . . . . . . . . . ...

Diagnosis Procedure . . . . . . . . . . . ...

Special Repair Requirement . . . . . . . . ...

C1900, C1901, C1906, C1907, C1927, C1933
4WAS MAIN CONTROL UNIT . . . . . . ...

Description . . . . . . . . . . . . . . . ..

DTC Logic . . . . . . . . . . . . . . . ...

Diagnosis Procedure . . . . . . . . . . . ...

Special Repair Requirement . . . . . . . . ...

C1902, C1903, C1904, C1910, C1913 4WAS
REAR MOTOR OUTPUT . . . . . . . . .

Description . . . . . . . . . . . . . . . ..

DTC Logic . . . . . . . . . . . . . . . ...

Diagnosis Procedure . . . . . . . . . . . ...

Component Inspection (4WAS Rear Motor) . . .

Special Repair Requirement . . . . . . . . .

C1905, C1908, C1922, C1925, C1928 4WAS
MAIN CONTROL UNIT . . . . . . . . . .

Description . . . . . . . . . . . . . . . ...

DTC Logic . . . . . . . . . . . . . . . .

Diagnosis Procedure . . . . . . . . . . . ...

Special Repair Requirement . . . . . . . . .

C1909 4WAS MAIN CONTROL UNIT . . . ..

Description . . . . . . . . . . . . . . . ...

DTC Logic . . . . . . . . . . . . . . . .

Diagnosis Procedure . . . . . . . . . . . ...

Special Repair Requirement . . . . . . . . .

C1911, C1912 4WAS REAR MOTOR POWER
SUPPLY . . . . . . . . . . . . . . .

Description . . . . . . . . . . . . . . . ...

DTC Logic . . . . . . . . . . . . . . . .

Diagnosis Procedure . . . . . . . . . . . ...

Component Inspection (4WAS Rear Motor Relay) .

Component Inspection (Noise Suppressor) . . ...

Special Repair Requirement . . . . . . . . ..

C1914 REAR WHEEL STEERING ANGLE
SENSOR . . . . . . . . . . . . . . ..

Description . . . . . . . . . . . . . . . .

DTC Logic . . . . . . . . . . . . . . . ..

Diagnosis Procedure . . . . . . . . . . . .

Component Inspection . . . . . . . . . . ...

Special Repair Requirement . . . . . . . . ..

C1915, C1916 REAR WHEEL STEERING AN-
GLE SENSOR . . . . . . . . . . . . .

Description . . . . . . . . . . . . . . . .

DTC Logic . . . . . . . . . . . . . . . ..

Diagnosis Procedure . . . . . . . . . . . .

Component Inspection . . . . . . . . . . ...

Special Repair Requirement . . . . . . . . ..

C1917, C1918 REAR WHEEL STEERING AN-
GLE SENSOR . . . . . . . . . . . . .

Description . . . . . . . . . . . . . . . .

DTC Logic . . . . . . . . . . . . . . . ..

Diagnosis Procedure . . . . . . . . . . . .

Component Inspection . . . . . . . . . . ...

Special Repair Requirement . . . . . . . . ..

C1919 VEHICLE SPEED SIGNAL . . . . ..

Description . . . . . . . . . . . . . . . .

DTC Logic . . . . . . . . . . . . . . . ..

Diagnosis Procedure . . . . . . . . . . . .

Special Repair Requirement . . . . . . . . ..

C1920 STEERING ANGLE SEN . . . . . .

Description . . . . . . . . . . . . . . . .

DTC Logic . . . . . . . . . . . . . . . ..

Diagnosis Procedure . . . . . . . . . . . .

Special Repair Requirement . . . . . . . . ..

C1921 ENGINE SPEED SIGNAL . . . . .

STC-4

Description . . . . . . . . . . . . . . . .

DTC Logic . . . . . . . . . . . . . . . ..

Diagnosis Procedure . . . . . . . . . . . .

Special Repair Requirement . . . . . . . . ..

C1923 STEERING ANGLE SEN . . . . . .

Description . . . . . . . . . . . . . . . .

DTC Logic . . . . . . . . . . . . . . . ..

Diagnosis Procedure . . . . . . . . . . . .

Special Repair Requirement . . . . . . . . ..

C1924 STEERING ANGLE SEN . . . . . .

Description . . . . . . . . . . . . . . . .

DTC Logic . . . . . . . . . . . . . . . ..

Diagnosis Procedure . . . . . . . . . . . .

Special Repair Requirement . . . . . . . . ..

C1926, C1932 STEERING ANGLE SENSOR .

Description . . . . . . . . . . . . . . . .

DTC Logic . . . . . . . . . . . . . . . ..

Diagnosis Procedure . . . . . . . . . . . .

Special Repair Requirement . . . . . . . . ..

C1930 4WAS FRONT CONTROL UNIT . . ..

Description . . . . . . . . . . . . . . . .

DTC Logic . . . . . . . . . . . . . . . ..

Diagnosis Procedure . . . . . . . . . . . .

C1931 4WAS FRONT CONTROL UNIT COM-
MUNICATION . . . . . . . . . . . . ..

Description . . . . . . . . . . . . . . . .

DTC Logic . . . . . . . . . . . . . . . ..

Diagnosis Procedure . . . . . . . . . . . .

Component Inspection [ABS Actuator and Electric
Unit (Control Unit)] . . . . . . . . . . . . .

Component Inspection (Yaw Rate/Side G Sensor)

..

Special Repair Requirement . . . . . . . . ..

U1000 CAN COMM CIRCUIT . . . . . . ..

Description . . . . . . . . . . . . . . . .

DTC Logic . . . . . . . . . . . . . . . ..

Diagnosis Procedure . . . . . . . . . . . .

Special Repair Requirement . . . . . . . . ..

U1010 CONTROL UNIT (CAN) . . . . . ...

Description . . . . . . . . . . . . . . . .

DTC Logic . . . . . . . . . . . . . . . ..

Diagnosis Procedure . . . . . . . . . . . .

Special Repair Requirement . . . . . . . . ..

POWER SUPPLY AND GROUND CIRCUIT ...

Description . . . . . . . . . . . . . . . .

Diagnosis Procedure (4WAS Front Control Unit) ..

Diagnosis Procedure (4WAS Main Control Unit) ...

Component Inspection (4WAS Rear Motor Relay) ..

Component Inspection (Noise Suppressor) . . ...

POWER STEERING SOLENOID VALVE . .

Description . . . . . . . . . . . . . . . .

Diagnosis Procedure . . . . . . . . . . . .

Component Inspection . . . . . . . . . . ..

4WAS WARNING LAMP . . . . . . . . ..

Description . . . . . . . . . . . . . . .

Diagnosis Procedure . . . . . . . . . . . .

Special Repair Requirement . . . . . . . . .

ECU DIAGNOSIS . . . . . . . . . ..

4WAS FRONT CONTROL UNIT . . . . . ..

Reference Value . . . . . . . . . . . . ...

Wiring Diagram — 4WAS SYSTEM — . . . . .

Fail Safe . . . . . . . . . . . . . . . .

DTC Inspection Priority Chart . . . . . . . ...

DTC Index . . . . . . . . . . . . . . . .

4WAS MAIN CONTROL UNIT . . . . . . .

Reference Value . . . . . . . . . . . . ...

Wiring Diagram — 4WAS SYSTEM — . . . . .

Fail Safe . . . . . . . . . . . . . . . .

DTC Inspection Priority Chart . . . . . . . ...

DTC Index . . . . . . . . . . . . . . . .

SYMPTOM DIAGNOSIS . . . . . . ...

4WAS SYMPTOMS . . . . . . . . . . ..

Symptom Table . . . . . . . . . . . . . .

4WAS WARNING LAMP DOES NOT TURN
ON . . . . . . . . . . . . . . . . . .

Description . . . . . . . . . . . . . . .

Diagnosis Procedure . . . . . . . . . . . .

4WAS WARNING LAMP DOES NOT TURN
OFF . . . . . . . . . . . . . . . . ...

Description . . . . . . . . . . . . . . .

Diagnosis Procedure . . . . . . . . . . . .

STEERING WHEEL MISS ALIGNMENT . . ..

Description . . . . . . . . . . . . . . .

Diagnosis Procedure . . . . . . . . . . . .

STEERING SYSTEM VIBRATION AND
NOISE . . . . . . . . . . . . . . . ...

Description . . . . . . . . . . . . . . .

Diagnosis Procedure . . . . . . . . . . . .

UNBALANCE STEERING WHEEL TURNING
FORCE (TORQUE VARIATION) . . . . . ..

Description . . . . . . . . . . . . . . .

Diagnosis Procedure . . . . . . . . . . . .

PRECAUTION . . . . . . . . . . ...

PRECAUTIONS . . . . . . . . . . . .

Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" . . . . . . . . . . . . . . . ...

Precaution Necessary for Steering Wheel Rota-
tion after Battery Disconnect . . . . . . . . .

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