Infiniti G35 (V35). Manual - part 245

TROUBLE DIAGNOSIS FOR SYSTEM

BRC-41

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

4. 

CHECK DATA MONITOR 

1.

Connect VDC/TCS/ABS control unit connector and steering angle sensor connector.

2.

Check “DATA MONITOR” for “STR ANGLE SIG”. Check if results are normal.

OK or NG

OK

>> Perform VDC/TCS/ABS  control unit self-diagnosis again.

NG

>> Replace steering angle sensor and adjust neutral position of steering angle sensor. Refer to 

BRC-

6, "Adjustment of Steering Angle Sensor Neutral Position"

 .

Yaw Rate/Side G Sensor System

NFS00076

CAUTION:

Sudden turns (such as spin turns, acceleration turns), drifting, etc.; When VDC function is OFF (VDC
OFF indicator lamp is turned on) may cause yaw rate/side G sensor circuit to indicate a malfunction.
However, this is not a malfunction, if normal operation can be resumed after restarting engine. Then
erase memory of self-diagnosis.

INSPECTION PROCEDURE

1. 

CHECK SELF-DIAGNOSTIC RESULTS

Check the self-diagnostic results.

CAUTION:

If vehicle is on turn-table at entrance to parking garage, or on other moving surface, VDC OFF indica-
tor lamp may illuminate and CONSULT-II self-diagnosis may indicate yaw rate sensor system malfunc-
tion. However, in this case there is no malfunction in yaw rate sensor system. Take vehicle off of turn-
table or other moving surface, and start engine. Results will return to normal. And after doing spin
turns or acceleration turns with VDC “OFF” (VDC OFF switch “ON”), too, the results will return to a
normal state by re-starting vehicle. 

Do “YAW RATE SENSOR ” and “SIDE G-SEN CIRCUIT” appear on self-diagnosis display?

YES

>> GO TO 2.

NO

>> INSPECTION END

2. 

CHECK CONNECTOR

1.

Turn ignition switch OFF and disconnect yaw rate/side G sensor connector and VDC/TCS/ABS control
unit connector. Then reconnect them securely.

2.

Perform VDC/TCS/ABS control unit self-diagnosis again.

OK or NG

OK

>> Poor connection of connectors. Repair or replace suspect connector. Perform self-diagnosis

again.

NO

>> GO TO 3.

Steering condition

DATA MONITOR

Driving straight

-5 to +5

°

 

Turned 90

°

to right

Approx. +90

°

Turned 90

°

to left

Approx. -90

°

Self-diagnostic results

YAW RATE SENSOR

SIDE G-SEN CIRCUIT

BRC-42

[VDC/TCS/ABS]

TROUBLE DIAGNOSIS FOR SYSTEM

3. 

CHECK YAW RATE/SIDE G SENSOR CIRCUIT

1.

Turn ignition switch OFF and disconnect yaw rate/side G sensor
connector and VDC/TCS/ABS control unit connector.

2.

Check continuity between VDC/TCS/ABS control unit harness
connector M93 and yaw rate/side G sensor harness connector
M51.

OK or NG

OK

>> GO TO 4.

NG

>> Open or short in harness. Repair or replace the suspect harness.

4. 

CHECK DATA MONITOR

1.

Connect VDC/TCS/ABS control unit connector and yaw rate/side G sensor connector.

2.

Check “DATA MONITOR” for yaw rate /side G sensor. Make sure results are normal.

OK or NG

OK

>> Perform VDC/TCS/ABS control unit self-diagnosis again.

NG

>> Malfunction of yaw rate/side G sensor. Replace yaw rate/side G sensor and perform VDC/TCS/

ABS control unit self-diagnosis again.

SFIA2446E

VDC/TCS/ABS control unit

Yaw rate/ Side G sensor

Continuity

78

1

Yes

77

2

34

3

79

4

18

5

80

6

Vehicle condition

Yaw rate sensor

(Data monitor standard)

Side G sensor

(Data monitor standard)

Stopped

-4 to +4 deg/s

-1.1 to +1.1 m/s

2

Turning right

Negative value

Negative value

Turning left

Positive value

Positive value

TROUBLE DIAGNOSIS FOR SYSTEM

BRC-43

[VDC/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

Solenoid and VDC Change-Over Valve System

NFS00077

INSPECTION PROCEDURE

1. 

CHECK SELF-DIAGNOSTIC RESULTS (1)

Check the self-diagnostic results.

Is above displayed on self-diagnosis display?

YES

>> GO TO 2.

NO

>> INSPECTION END

2. 

CHECK CONNECTOR

1.

Turn ignition switch OFF and disconnect VDC/TCS/ABS control unit connector and VDC actuator con-
nectors. Then reconnect them securely.

2.

Reconnect connectors securely and perform self-diagnosis again.

Do any self-diagnosis items appear?

YES

>> GO TO 3.

NO

>> Poor connection. Repair or replace connector.

3. 

CHECK ACTUATOR SOLENOID

1.

Turn ignition switch OFF and disconnect VDC relay box connec-
tor E222 and VDC actuator connectors.

2.

Check resistance of VDC actuator solenoid.

OK or NG

OK

>> GO TO 4.

NG

>> Check harness open or short between VDC relay box and VDC actuator. If harness is OK, replace

VDC actuator.

Self-diagnostic results

IN ABS SOL

OUT ABS SOL

USV LINE [FL-RR]

USV LINE [FR-RL]

HSV LINE [FL-RR]

HSV LINE [FR-RL]

SFIA2447E

VDC actuator connector

VDC relay box 

Resistance value

7, 3, 5, 1, 25, 26

16

6.0 - 11 

Ω

17, 15, 16, 14, 27, 28

3.0 - 5.0 

Ω

BRC-44

[VDC/TCS/ABS]

TROUBLE DIAGNOSIS FOR SYSTEM

4. 

CHECK SOLENOID CIRCUIT

1.

Disconnect VDC/TCS/ABS control unit and VDC actuator con-
nectors.

2.

Check continuity between VDC/TCS/ABS control unit harness
connector M93 and VDC actuator harness connector E49 and
E50.

OK or NG

OK

>> Replace VDC actuator.

NG

>> If the open or short in harness, repair or replace harness.

Actuator Motor and Motor Relay System

NFS00078

INSPECTION PROCEDURE

1. 

CHECK SELF-DIAGNOSTIC RESULTS

Check self-diagnostic results.

Is the above displayed in the self-diagnosis display items?

YES

>> GO TO 2.

NO

>> INSPECTION END

2. 

CHECK CONNECTOR

1.

Turn ignition switch OFF and disconnect VDC/TCS/ABS control unit connector and VDC relay box con-
nectors. 

2.

Reconnect connectors securely and perform self-diagnosis again.

Do any self-diagnosis items appear?

YES

>> GO TO 3.

NO

>> Poor connection. Repair or replace connector.

SFIA1371E

VDC/TCS/ABS control unit

VDC actuator

Continuity

5

1

Yes

3

14

6

7

4

17

26

3

55

15

53

5

25

16

49

26

50

25

54

28

52

27

Self-diagnostic results

PUMP MOTOR