Nissan Teana J32. Manual - part 522

EXL-58

< COMPONENT DIAGNOSIS >

[XENON TYPE]

XENON HEADLAMP

XENON HEADLAMP

Description

INFOID:0000000003773562

OUTLINE

• The lamp light source is by the arch discharge by applying high voltage into the xenon gas-filled bulb instead

of the halogen bulb filament. 

• Sight becomes more natural and brighter because the amount of light are gained adequately and the color of

light is sunshine-like white. 

• The xenon bulb drops the amount of light, repeats blinking, and illuminates in red if the bulb reaches the ser-

vice life.

ILLUMINATION PRINCIPLE

1.

 Discharging starts in high voltage pulse between bulb elec-
trodes.

2.

Xenon gas is activated by current between electrodes. Pale light
is emitted.

3.

The luminous tube (bulb) temperature elevates. Evaporated
halide is activated by discharge. The color of light changes into
white.

NOTE:
• Brightness and the color of light may change slightly immediately

after the headlamp turned ON until the xenon bulb becomes sta-
ble. This is not malfunction.

• Illumination time lag may occur between right and left. This is not

malfunction.

PRECAUTIONS FOR TROUBLE DIAGNOSIS

Representative malfunction examples are; "Light does not turn ON", "Light blinks", and "Brightness is inade-
quate." The cause often be the xenon bulb. Such malfunctions, however, are occurred occasionally by HID
control unit malfunction or lamp case malfunction. Specify the malfunctioning part with diagnosis procedure. 

WARNING:

• Never touch the harness, HID control unit, the inside and metal part of lamp when turning the head-

lamp ON or operating the lighting switch. 

• Never work with wet hands.

CAUTION:

• Never perform HID control unit circuit diagnosis with a circuit tester or an equivalent.
• Temporarily install the headlamps on the vehicle. Connect the battery to the connector (vehicle side)

when checking ON/OFF status.

• Disconnect the battery negative terminal before disconnecting the lamp socket connector or the har-

ness connector.

• Check for fusing of the fusible link(s), open around connector, short, disconnection if the symptom

is caused by electric error.

NOTE:
• Turn the switch OFF once before turning ON, if the ON/OFF is inoperative.
• The xenon bulb drops the amount of light, repeats blinking, and illuminates in red if the bulb reaches the ser-

vice life.

Diagnosis Procedure

INFOID:0000000003773563

1.

CHECK XENON BULB

Install the normal bulb to the applicable headlamp. Check that the lighting switch is turned ON.

Is the headlamp turned ON?

YES

>> Replace the xenon bulb.

NO

>> GO TO 2.

2.

CHECK HID CONTROL UNIT

Install the normal HID control unit to the applicable headlamp. Check that the lighting switch is turned ON.

Is the headlamp turned ON?

JPLIA0421GB

XENON HEADLAMP

EXL-59

< COMPONENT DIAGNOSIS >

[XENON TYPE]

C

D

E

F

G

H

I

J

K

M

A

B

EXL

N

O

P

YES

>> Replace HID control unit. 

NO

>> Xenon headlamp is normal. Check the headlamp control system.

EXL-60

< COMPONENT DIAGNOSIS >

[XENON TYPE]

HEADLAMP LEVELIZER CIRCUIT

HEADLAMP LEVELIZER CIRCUIT

Description

INFOID:0000000003774349

The headlamp levelizer adjusts the headlamp light axis upward and downward with the aiming motor inte-
grated in the front combination lamp.

Component Function Check

INFOID:0000000003774350

1.

CHECK HEADLAMP LEVELIZER OPERATION

CONSULT-III ACTIVE TEST

1.

Start the engine.

2.

Turn the lighting switch 2ND.

3.

Select “LAMP TEST” of HEADLAMP LEVELIZER active test item.

4.

With operating the test item, check the light axis operation.

Is the operation normal?

YES

>> Headlamp levelizer circuit is normal.

NO

>> Refer to 

EXL-60, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000003774351

1.

CHECK AIMING MOTOR DRIVE SIGNAL OUTPUT

CONSULT-III ACTIVE TEST

1.

Start the engine. 

2.

Turn the light switch 2ND.

3.

Select “LAMP TEST” of HEADLAMP LEVELIZER active test item.

4.

With operating the test items, check the voltage between the auto levelizer control unit harness connector
and the ground.

Is the measurement value normal?

YES

>> GO TO 2.

Fixed at 0 V>>GO TO 3.
Fixed at battery voltage>>GO TO 4.

2.

CHECK AIMING MOTOR DRIVE OPEN CIRCUIT

1.

Turn the ignition switch OFF.

2.

Disconnect auto levelizer control unit connector and headlamp aiming motor connector.

3.

Check continuity between auto levelizer control unit harness connector and the headlamp aiming motor
harness connector.

Test item 

 Light axis operation

LAMP TEST

MIN

Moves the light axis to the highest position.

MID

Moves the light axis to the initial position.

MAX

Moves the light axis to the lowest position.

Terminals

Test item

Voltage

(Approx.)

(+)

(

−

)

Auto levelizer control 

unit

Ground

LAMP TEST

Connector

Terminal

C8

7

MIN

1.4 V

MID

6.3 V

MAX

9.3 V

HEADLAMP LEVELIZER CIRCUIT

EXL-61

< COMPONENT DIAGNOSIS >

[XENON TYPE]

C

D

E

F

G

H

I

J

K

M

A

B

EXL

N

O

P

Does continuity exist?

YES

>> Replace the front combination lamp.

NO

>> Repair the harnesses and connectors.

3.

CHECK AIMING MOTOR DRIVE SHORT CIRCUIT (SHORT TO GROUND)

1.

Turn the ignition switch OFF.

2.

Disconnect auto levelizer control unit connector and headlamp aiming motor connector.

3.

Check continuity between auto levelizer control unit harness connector and ground.

Does continuity exist?

YES

>> Repair the harness and connectors.

NO

>> Replace auto levelizer control unit.

4.

CHECK AIMING MOTOR DRIVE SHORT CIRCUIT (SHORT TO BATTERY)

1.

Turn the ignition switch OFF.

2.

Disconnect auto levelizer control unit connector and headlamp aiming motor connector.

3.

Check voltage between auto levelizer control unit harness connector and ground.

Is the measurement value normal?

YES

>> Replace auto levelizer control unit.

NO

>> Repair the harness and connectors.

Auto levelizer control unit

headlamp aiming mo-

tor

Continuity

Connector

Terminal

Connector

Terminal

RH

C8

7

E336

2

Existed

LH

E335

2

Terminals

Continuity

(+)

(

−

)

Auto levelizer control unit

Ground

Connector

Terminal

C8

7

Not existed

Terminals

Voltage

(Approx.)

(+)

(

−

)

Auto levelizer control unit

Ground

Connector

Terminal

C8

7

0 V