AFS Switch Does Not Operate

WARNING: This page is about a different car, the 2008 Infiniti M45 and 2008 Infiniti M35. However, it is still accessible from the selected car via links, so may be relevant.

CHECK AFS SWITCH SIGNAL 1
CONSULT-III DATA MONITOR
1. Turn ignition switch ON.
2. Select "AFS SW" of ADAPTIVE LIGHT data monitor item.
3. With operating the AFS switch, check the monitor status.
OK or NG

OK: Replace AFS control unit. Refer to "REMOVAL AND INSTALLATION OF AFS CONTROL UNIT ".

NG: GO TO 2.

CHECK AFS SWITCH

Turn ignition switch OFF.
Disconnect AFS switch connector.

Check continuity AFS switch.

TERMINALS CONTINUITY REFERENCE CHART

AFS switch		Condition	Continuity
Terminal		Condition	Continuity
1	4	AFS switch is ON.	No
1	4	AFS switch is OFF.	Yes

OK or NG

OK: GO TO 3.

NG: Replace AFS switch. Refer to "REMOVAL AND INSTALLATION OF AFS SWITCH ".

Fig 1: Checking Continuity AFS Switch

Courtesy of NISSAN MOTOR CO., U.S.A.

CHECK AFS SWITCH SIGNAL 2

Connect AFS switch connector.
Turn ignition switch ON.

Check voltage between AFS control unit harness connector and ground according to AFS switch operation.

TERMINALS VOLTAGE REFERENCE CHART

(+)		(-)	Condition	Voltage (Approx.)
AFS control unit connector	Terminal	(-)	Condition	Voltage (Approx.)
F110	3	Ground	AFS switch is ON.	0 V
F110	3	Ground	AFS switch is OFF.	Battery voltage

OK or NG

OK: Replace AFS control unit. Refer to "REMOVAL AND INSTALLATION OF AFS CONTROL UNIT ".

NG:

If voltage is approx. 0 V and stays unchanged, GO TO 4.
If voltage is battery voltage and stays unchanged, GO TO 6.

Fig 2: Checking Voltage Between AFS Control Unit Harness Connector And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

CHECK AFS SWITCH POWER SUPPLY CIRCUIT

Turn ignition switch OFF.
Disconnect AFS switch connector.
Turn ignition switch ON.

Check voltage between AFS switch harness connector and ground.

TERMINALS VOLTAGE REFERENCE CHART

Terminals			Voltage (Approx.)
(+)		(-)
AFS switch connector	Terminal	(-)
M96	1	Ground	Battery voltage

Fig 3: Checking Voltage Between AFS Switch Harness Connector Terminal 1 And Ground

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: GO TO 5.

NG: Repair harness or connector.

CHECK AFS SWITCH CIRCUIT

Turn ignition switch OFF.
Disconnect AFS control unit connector.

Check continuity between AFS switch harness connector (A) and AFS control unit harness connector (B).

TERMINALS CONTINUITY REFERENCE CHART

A		B		Continuity
Connector	Terminal	Connector	Terminal	Continuity
M96	4	F110	3	Yes

OK or NG

OK: Check connector for connection, bend and loose fit.

NG: Repair harness or connector.

Fig 4: Checking Continuity Between AFS Switch Terminal 4 And AFS Control Unit Terminal 3

Courtesy of NISSAN MOTOR CO., U.S.A.

CHECK AFS SWITCH CIRCUIT (IGN POWER SUPPLY SHORT CIRCUIT)

Turn ignition switch OFF.
Disconnect AFS control unit connector and AFS switch connector.
Turn ignition switch ON.

Check voltage between AFS control unit harness connector and ground.

TERMINALS VOLTAGE REFERENCE CHART

Terminals			Voltage (Approx.)
(+)		(-)
AFS control unit connector	Terminal	(-)
F110	3	Ground	Battery voltage

OK or NG

OK: Replace AFS control unit. Refer to "REMOVAL AND INSTALLATION OF AFS CONTROL UNIT ".

NG: Repair harness or connector.

Fig 5: Checking Voltage Between AFS Control Unit Harness Connector Terminal 3 And Ground

Courtesy of NISSAN MOTOR CO., U.S.A.