Infiniti M35/M45 Y50. Manual - part 901

ACTIVE AFS

LT-149

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LT

Terminals and Reference Values for AFS Control Unit

NKS003QJ

Ter-

minal 

No.

Wire 

color

Item

Measuring condition

Reference value

Ignition 

switch

Operation or condition

1

B/R

IGN power supply

ON

—

Battery voltage

2

W/R

Swivel position sensor ground 
(right)

ON

—

Approx. 0 V

3

GR

AFS switch signal

ON

AFS switch

ON

Approx. 0 V

OFF

Battery voltage

4

Y

Swivel position sensor power 
supply (right)

ON

—

Approx. 5 V

6

V/W

Height sensor power supply

ON

—

Approx. 5 V

7

P

CAN-L

—

—

—

8

B/R

Height sensor ground

ON

—

Approx. 0 V

9

W/B

Swivel position sensor signal 
(right)

ON

Low beam headlamp 
(right) swivel angle

0

°

Approx. 1.5 V

Maximum 
angle

Approx. 2.5 V

11

R

Swivel motor 1 phase

−

 (right)

ON

Low beam headlamp 
(right) swivel

ON

Reference waveform

Approx. 8 - 12 V

13

B

Swivel motor 2 phase

−

 (right)

ON

OFF

Approx. 9.5 - 11.5 V

15

BR/L

Swivel motor 1 phase+ (left)

ON

Low beam headlamp 
(left) swivel

ON

Reference waveform

Approx. 8 - 12 V

17

Y/G

Swivel motor 2 phase+ (left)

ON

OFF

Approx. 9.5 - 11.5 V

19

V

Aiming motor drive signal (right)

ON

Low beam headlamp 
(right) auto aiming

Unloaded 
vehicle posi-
tion

Approx. 9 V

Maximum 
laden condi-
tion 

Approx. 4.8 V

(With 18- inch wheel)

Approx. 5.2 V

(With 19 -inch wheel)

24

V/R

Swivel position sensor power 
supply (left)

ON

—

Approx. 5 V

25

B

Ground

ON

—

Approx. 0 V

27

R/W

Swivel position sensor ground 
(left)

ON

—

Approx. 0 V

SKIB2408J

SKIB2408J

LT-150

ACTIVE AFS

28

BR

Height sensor signal

ON

Vehicle height

Unloaded 
vehicle posi-
tion

Approx. 2.5 V

Maximum 
laden condi-
tion 

Approx. 1.0 V

(With 18- inch wheel)

Approx. 1.3 V

(With 19- inch wheel)

29

L/Y

Swivel position sensor signal 
(left)

ON

Low beam headlamp 
(left) swivel angle

0

°

Approx. 1.5 V

Maximum 
angle

Approx. 3.5 V

30

L

CAN-H

—

—

—

32

W

Swivel motor 2 phase+ (right)

ON

Low beam headlamp 
(right) swivel

ON

Reference waveform

Approx. 8 - 12 V

34

G

Swivel motor 1phase+ (right)

ON

OFF

Approx. 9.5 - 11.5V

36

Y/L

Swivel motor 2 phase

−

 (left)

ON

Low beam headlamp 
(left) swivel

ON

Reference waveform

Approx. 8 - 12 V

38

W/L

Swivel motor 1 phase

−

 (left)

ON

OFF

Approx. 9.5 - 11.5 V

40

O

Aiming motor drive signal (left)

ON

Low beam headlamp 
(left) auto aiming

Unloaded 
vehicle posi-
tion

Approx. 9 V

Maximum 
laden condi-
tion 

Approx. 4.8 V

(With 18 -inch wheel)

Approx. 5.2 V

(With 19 -inch wheel)

Ter-

minal 

No.

Wire 

color

Item

Measuring condition

Reference value

Ignition 

switch

Operation or condition

SKIB2408J

SKIB2408J

ACTIVE AFS

LT-151

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LT

How to Proceed with Trouble Diagnosis

NKS003QK

1.

Confirm the symptom or customer complaint.

2.

Understand operation description and function description. Refer to 

LT-134, "System Description"

 .

3.

Perform the preliminary check. Refer to 

LT-151, "Preliminary Check"

 . 

4.

Perform self-diagnosis by CONSULT-II. Refer to 

LT-153, "SELF-DIAG RESULTS"

 .

5.

Check symptom and repair or replace the cause of malfunction.

6.

Does the AFS operate normally? If YES: GO TO 7. If NO: GO TO 4.

7.

INSPECTION END

Preliminary Check

NKS003QL

1. 

CHECK FUSES AND FUSIBLE LINK

Check for blown fuses and fusible link.

Refer to 

LT-143, "Wiring Diagram — AFS —"

 .

OK or NG

OK

>> GO TO 2.

NG

>> If the fuse is brown be sure to eliminate cause of malfunction before installing new fuse. Refer to

PG-3, "POWER SUPPLY ROUTING CIRCUIT"

 .

2. 

CHECK AFS CONTROL UNIT VOLTAGE

1.

Turn ignition switch ON.

2.

Check voltage between AFS control unit harness connector and
ground.

OK or NG

OK

>> GO TO 3.

NG

>> Repair harness or connector.

3. 

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Check continuity between AFS control unit harness connector
and ground.

OK or NG

OK

>> INSPECTION END

NG

>> Repair harness or connector.

Unit

Power source

Fuse No.

AFS control unit

Ignition switch ON or START

12

Terminals

Voltage 

(Approx.)

(+)

(-)

AFS control unit 

connector

Terminal

F110

1

Ground

Battery voltage

SKIB4776E

AFS control unit 

connector

Terminal 

Ground

Continuity

F110

25

Yes

SKIB4775E

LT-152

ACTIVE AFS

CONSULT-II Function (ADAPTIVE LIGHT)

NKS003QM

CONSULT-II can display each diagnostic item using diagnostic test modes shown following.

CONSULT-II BASIC OPERATION

Refer to 

GI-38, "CONSULT-II Start Procedure"

 .

WORK SUPPORT (STEERING ANGLE SENSOR ADJUSTMENT)
Work Support Item List

CAUTION:

Never use this function but on VDC side.

Notes on Steering Angle Sensor (Neutral Point) Adjustment

●

Be sure to adjust steering angle sensor neutral point before driving if any of the following has been
removed/installed or replaced: Steering angle sensor; Steering system part, Suspension system part.

●

On vehicle with VDC, perform steering angle sensor neutral point adjustment only on VDC side. Never
perform the adjustment on ADAPTIVE LIGHT side as this may lead to VDC malfunctions. If the adjust-
ment has been performed on AFS side, readjust on VDC side. For steering angle sensor neutral point
adjustment procedures on VDC side, refer to 

BRC-6, "Adjustment of Steering Angle Sensor Neutral Posi-

tion"

  in “ON-VEHICLE SERVICE”.

●

When replaced steering angle sensor, AFS control unit detects “DTC B2515 ST ANG SEN SIG”. Delete
the malfunction history after adjust steering angle sensor on VDC side.

●

Steering angle sensor neutral point adjustment should be performed using CONSULT-II. (The adjustment
will not be possible without CONSULT-II.)

Operation Procedure

Refer to 

BRC-6, "Adjustment of Steering Angle Sensor Neutral Position"

 .

WORK SUPPORT (LEVELIZER ADJUSTMENT)
Work Support Item List

Operation Procedure

1.

Set the vehicle in unload condition. (Removal all loads in driver, passenger and trunk rooms.)

2.

Touch “ADAPTIVE LIGHT” on “SELECT SYSTEM” screen.

3.

Touch “WORK SUPPORT” on “SELECT DIAG MODE” screen.

4.

Touch “LEVELIZER ADJUSTMENT”.

5.

Touch “START”.

6.

“ADJUSTMENT COMPLETE” will be displayed.

CAUTION:

When “CAN NOT BE TESTED” is displayed, AFS control unit stops levelizer adjustment as it
detected the change of height sensor signal. AFS control unit detects “DTC B2519 LEVELIZER
CALIB”.

System part

Check item, diagnosis mode

Description

ADAPTIVE LIGHT

WORK SUPPORT

Adjusts steering angle sensor (Never use this function but on VDC side) and 
adjusts levelizer.

SELF-DIAG RESULTS

Displays self-diagnosis

DATA MONITOR

Displays AFS control unit inputs and outputs in real time.

CAN DIAG SUPPORT MNTR

The result of transmit/receive diagnosis of CAN communication can be read.

ACTIVE TEST

AFS control unit sends a drive signal to electronic components to check their 
operation.

ECU PART NUMBER

AFS control unit part number can be read.

Item

Description

ST ANG SEN ADJUSTMENT

Adjust steering angle sensor neutral point (straight-ahead position).

Item

Description

LEVELIZER ADJUSTMENT

Adjust the height sensor signal value at unloaded vehicle position recognized by AFS control unit.