Infiniti G35 (V35) Sedan. Manual - part 1319

STC-166

< ECU DIAGNOSIS >

[WITH 4WAS]

4WAS MAIN CONTROL UNIT

DTC Index

INFOID:0000000000958925

DTC

Items 

(CONSULT-III screen terms)

Reference

C1900

CONTROL UNIT
[ABNORMAL1]

STC-87, "Description"

C1901

CONTROL UNIT
[ABNORMAL2]

STC-87, "Description"

C1902

MOTOR OUTPUT
[REV CURRENT]

STC-89, "Description"

C1903

MOTOR OUTPUT
[NO CURRENT]

STC-89, "Description"

C1904

MOTOR OUTPUT
[OVERCURRENT]

STC-89, "Description"

C1905

CONTROL UNIT
[ABNORMAL3]

STC-92, "Description"

C1906

CONTROL UNIT
[ABNORMAL5]

STC-87, "Description"

C1907

CONTROL UNIT
[ABNORMAL4]

STC-87, "Description"

C1908

CONTROL UNIT
[ABNORMAL7]

STC-92, "Description"

C1909

CONTROL UNIT
[ABNORMAL6]

STC-94, "Description"

C1910

MOTOR OUTPUT
[MOTOR LOCK]

STC-89, "Description"

C1911

MOTOR VOLTAGE
[LOW VOLTEGE]

STC-96, "Description"

C1912

MOTOR VOLTAGE
[BAD OBSTRCT]

STC-96, "Description"

C1913

MOTOR OUTPUT
[ABNORML SIG]

STC-89, "Description"

C1914

RR ST ANGLE SENSOR
[ABNORML VOL]

STC-101, "Description"

C1915

RR ST ANGLE SENSOR
[MAIN SIGNAL]

STC-104, "Description"

C1916

RR ST ANGLE SENSOR
[SUB SIGNAL]

STC-104, "Description"

C1917

RR ST ANGLE SENSOR
[OFFSET SIG1]

STC-107, "Description"

C1918

RR ST ANGLE SENSOR
[OFFSET SIG2]

STC-107, "Description"

C1919

VEHICLE SPEED SEN
[NO SIGNAL]

STC-110, "Description"

C1920

STEERING ANGLE SEN
[NO SIGNAL]

STC-112, "Description"

C1921

ENG REV SIGNAL

STC-115, "Description"

C1922

CONTROL UNIT
[ABNORMAL8]

STC-92, "Description"

C1923

STEERING ANGLE SEN
[NO CHANGE]

STC-117, "Description"

C1924

STEERING ANGLE SEN
[NO NEUT STATE]

STC-120, "Description"

4WAS MAIN CONTROL UNIT

STC-167

< ECU DIAGNOSIS >

[WITH 4WAS]

C

D

E

F

H

I

J

K

L

M

A

B

STC

N

O

P

C1925

AD CONVERTER

STC-92, "Description"

C1926

STEERING ANGLE SEN

STC-123, "Description"

C1927

CONTROL UNIT
[ABNORMAL5]

STC-87, "Description"

C1928

CONTROL UNIT
[ABNORMAL9]

STC-92, "Description"

C1930

4WAS FRONT ECU

STC-126, "Description"

C1931

4WAS FRONT ECU COMM

STC-127, "Description"

C1932

STEERING ANGLE SEN

STC-123, "Description"

C1933

CONTROL UNIT

STC-87, "Description"

U1000

CAN COMM

STC-131, "Description"

U1010

CONTROL UNIT (CAN)

STC-132, "Description"

DTC

Items 

(CONSULT-III screen terms)

Reference

STC-168

< SYMPTOM DIAGNOSIS >

[WITH 4WAS]

4WAS SYMPTOMS

SYMPTOM DIAGNOSIS

4WAS SYMPTOMS

Symptom Table

INFOID:0000000000958926

If 4WAS warning lamp turns ON, perform self-diagnosis

Symptom

Condition

Check item

Reference

4WAS warning lamp does not turn on.
(4WAS warning lamp does not turn ON 
when turning ignition switch ON from OFF)

Ignition switch: ON

4WAS system power supply and ground

STC-169, "De-

scription"

Unified meter and A/C amp.

CAN communication line

Combination meter

4WAS main control unit

4WAS warning lamp does not turn off.

Engine running

4WAS main control unit self-diagnosis

STC-170, "De-

scription"

4WAS front control unit self-diagnosis

Steering wheel miss alignment
(The steering wheel position (center) is in 
the wrong position at driving)

Driving

Return to 4WAS front actuator initial po-
sition

STC-171, "De-

scription"

4WAS system condition

steering system

wheel alignment

4WAS front actuator adjustment

4WAS system ignition power supply

4WAS system 4WAS front motor power 
supply

4WAS system incomplete lock release

4WAS system history inspection

Steering system vibration and noise
(Vibration or noise occurs in the steering 
wheel while driving the vehicle.)

Driving

4WAS system protection function mode

STC-173, "De-

scription"

4WAS front actuator control stopped

Unbalance steering wheel turning force
(torque variation)

Driving

Vehicle speed signal

STC-174, "De-

scription"

Steering system

Power steering solenoid valve

4WAS WARNING LAMP DOES NOT TURN ON

STC-169

< SYMPTOM DIAGNOSIS >

[WITH 4WAS]

C

D

E

F

H

I

J

K

L

M

A

B

STC

N

O

P

4WAS WARNING LAMP DOES NOT TURN ON

Description

INFOID:0000000000958927

• 4WAS warning lamp does not turn ON when turning ignition switch ON from OFF.

Diagnosis Procedure

INFOID:0000000000958928

1.

CHECK 4WAS SYSTEM POWER SUPPLY AND GROUND CIRCUIT

 With CONSULT-III

Perform the trouble diagnosis of the power supply and ground circuit.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace the specific malfunctioning part.

2.

CHECK 4WAS WARNING LAMP

 With CONSULT-III

Perform the trouble diagnosis of 4WAS warning lamp. Refer to 

STC-140, "Diagnosis Procedure"

.

Is the inspection result normal?

YES

>> Check that there is no malfunction in each harness connector pin terminal or disconnection.

NO

>> Repair or replace the specific malfunctioning part.