Infiniti M35/M45 Y50. Manual - part 904

ACTIVE AFS

LT-161

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LT

DTC B2503 SWIVEL ACTUATOR RH

NKS003QO

1. 

CHECK SWIVEL POSITION SENSOR SIGNAL

1.

Turn ignition switch ON.

2.

Check voltage between AFS control unit harness connector and
ground.

OK or NG

OK

>> GO TO 2.

NG

>>

●

If voltage is less than approx. 0.25V, GO TO 3.

●

If voltage is more than approx. 4.75V, GO TO 6.

2. 

CHECK SWIVEL POSITION SENSOR POWER SUPPLY

Check voltage between AFS control unit harness connector and
ground.

OK or NG

OK

>> GO TO 12.

NG

>> Replace AFS control unit. Refer to 

LT-192, "Removal

and Installation of AFS Control Unit"

 .

3. 

CHECK SWIVEL POSITION SENSOR POWER SUPPLY

Check voltage between AFS control unit harness connector and
ground.

OK or NG

OK

>> GO TO 4.

NG

>> GO TO 8.

Terminals

Voltage 

(Approx.)

(+)

(-)

AFS control unit 

connector

Terminal

F110

9

Ground

0.25 - 4.75 V

PKIC0646E

Terminals

Voltage 

(Approx.)

(+)

(-)

AFS control unit 

connector

Terminal

F110

4

Ground

4.0 - 6.0 V

PKIC0645E

Terminals

Voltage 

(Approx.)

(+)

(-)

AFS control unit 

connector

Terminal

F110

4

Ground

4.0 - 6.0 V

PKIC0645E

LT-162

ACTIVE AFS

4. 

CHECK SWIVEL POSITION SENSOR POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect front combination lamp RH connector.

3.

Turn ignition switch ON.

4.

Check voltage between front combination lamp RH harness
connector and ground.

OK or NG

OK

>> GO TO 5.

NG

>> Repair harness or connector.

5. 

CHECK SWIVEL POSITION SENSOR SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect AFS control unit connector.

3.

Check continuity between AFS control unit harness connector
(A) and front combination lamp RH harness connector (B).

OK or NG

OK

>> Replace front combination lamp RH (swivel position

sensor malfunction). Refer to 

LT-191, "Removal and

Installation of Front Combination Lamp"

 .

NG

>> Repair harness or connector.

6. 

CHECK SWIVEL POSITION SENSOR GROUND

Check voltage between AFS control unit harness connector and
ground.

OK or NG

OK

>> GO TO 7.

NG

>> Check connector for connection, bend and loose fit. If it

is normal, replace AFS control unit. Refer to 

LT-192, "Removal and Installation of AFS Control

Unit"

 .

Terminals

Voltage 

(Approx.)

(+)

(-)

Front combination 

lamp RH connector

Terminal

E48

15

Ground

4.0 - 6.0 V

PKIC0647E

A

B

Continuity

Connector

Terminal Connector

Terminal 

F110

9

E48

14

Yes

PKIC0648E

Terminals

Voltage 

(Approx.)

(+)

(-)

AFS control unit 

connector

Terminal

F110

2

Ground

0 V

PKIC0649E

ACTIVE AFS

LT-163

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LT

7. 

CHECK SWIVEL POSITION SENSOR GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect AFS control unit connector and front combination lamp RH connector.

3.

Check continuity between AFS control unit harness connector
(A) and front combination lamp RH harness connector (B).

OK or NG

OK

>> Replace front combination lamp RH (swivel position

sensor malfunction). Refer to 

LT-191, "Removal and

Installation of Front Combination Lamp"

 .

NG

>> Repair harness or connector.

8. 

CHECK DIAGNOSIS RESULT

Select “ADAPTIVE LIGHT” on CONSULT-II. Select “SELF-DIAG
RESULTS” on “SELECT DIAG MODE” screen.

Is DTC B2521 ECU CIRC detected?

YES

>> Refer to 

LT-179, "DTC B2521 ECU CIRC"

 .

NO

>> GO TO 9.

9. 

CHECK SWIVEL POSITION SENSOR POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect front combination lamp RH connector.

3.

Turn ignition switch ON.

4.

Check voltage between AFS control unit harness connector and
ground.

OK or NG

OK

>> GO TO 10.

NG

>> GO TO 11.

A

B

Continuity

Connector

Terminal Connector

Terminal 

F110

2

E48

19

Yes

PKIC0650E

SKIB4975E

Terminals

Voltage 

(Approx.)

(+)

(-)

AFS control unit 

connector

Terminal

F110

4

Ground

4.0 - 6.0 V

PKIC0651E

LT-164

ACTIVE AFS

10. 

CHECK SWIVEL POSITION SENSOR SIGNAL CIRCUIT (SHORT CIRCUIT)

1.

Turn ignition switch OFF.

2.

Disconnect AFS control unit connector.

3.

Check continuity between AFS control unit harness connector
and ground.

OK or NG

OK

>> Replace front combination lamp RH (swivel position

sensor malfunction). Refer to 

LT-191, "Removal and

Installation of Front Combination Lamp"

 .

NG

>> Repair harness or connector.

11. 

CHECK SWIVEL POSITION SENSOR POWER SUPPLY CIRCUIT (SHORT CIRCUIT)

1.

Turn ignition switch OFF.

2.

Disconnect AFS control unit connector.

3.

Check continuity between AFS control unit harness connector
and ground.

OK or NG

OK

>> Replace AFS control unit. Refer to 

LT-192, "Removal

and Installation of AFS Control Unit"

 .

NG

>> Repair harness or connector.

AFS control unit 

connector

Terminal 

Ground

Continuity

F110

9

No

SKIB4968E

AFS control unit 

connector

Terminal 

Ground

Continuity

F110

4

No

PKIC0652E