light NISSAN TEANA 2008 Service Manual

EXL-38
< COMPONENT DIAGNOSIS >[XENON TYPE]
B2080 ECU TROUBLE
COMPONENT DIAGNOSIS
B2080 ECU TROUBLE
DescriptionINFOID:0000000003805599
 Auto levelizer control unit is installed in rear suspension arm.
 Auto levelizer control unit detects vehicle rear height.
 Auto levelizer control unit controls headlamp light axis appropriately depending on the vehicle height.
DTC LogicINFOID:0000000003805600
DTC DETECTION LOGIC
[B2080] ECU TROUBLE
Diagnosis ProcedureINFOID:0000000003805601
1.ERASE DTC
Erase DTC memory of HEADLAMP LEVELIZER with self-diagnosis of CONSULT-III.
Is the memory erased?
YES >> INSPECTION END
NO >> Replace the auto levelizer control unit.
DTC detection condition DTC erase conditions Possible causes
Auto levelizer control unit internal malfunction. Ignition switch OFF Auto levelizer control unit

EXL-40
< COMPONENT DIAGNOSIS >[XENON TYPE]
B2082 SENSOR OUT OF RANGE
B2082 SENSOR OUT OF RANGE
DTC LogicINFOID:0000000003805604
DTC DETECTION LOGIC
[B2082] SENSOR OUT OF RANGE
DTC CONFIRMATION PROCEDURE
1.ERASE DTC
Erase DTC memory of headlamp levelizer with self-diagnosis of CONSULT-III.
>> GO TO 2.
2.DTC CONFIRMATION
1. Turn the ignition switch ON.
2. Perform self-diagnosis of CONSULT-III.
Is B2082 detected?
YES >> Refer to EXL-40, "Diagnosis Procedure".
NO >> Refer to GI-35, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000003805605
1.CHECK SENSOR INITIALIZATION VALUE
1. Turn ignition switch ON.
2. Turn the lighting switch 1ST.
3. Select "INT SEN VALUE" of HEADLAMP LEVELIZER data monitor item.
4. Check the monitor status under unladen conditions.
*: Sensor initialize position (reference)
Is the measurement value normal?
YES >> Replace the auto levelizer control unit.
NO >> GO TO 2.
2.SENSOR INITIALIZATION
Perform the sensor initialize. Refer to EXL-10, "
SENSOR INITIALIZE : Special Repair Requirement (HEAD-
LAMP AIMING CONTROL SYSTEM)".
Is sensor initialize completed?
YES >> GO TO 3.
No >> Replace the auto levelizer control unit.
3.ERASE DTC
Erase DTC memory of headlamp levelizer with self-diagnosis of CONSULT-III.
Is the memory erased?
YES >> INSPECTION END
NO >> Replace the auto levelizer control unit.
DTC detection condition DTC erase conditions Possible cause
Auto levelizer control unit detected that the sensor lever an-
gle is out of range, continually for 20 ms or more.When sensor lever returns to
normal range Auto levelizer control unit in-
stallation condition
 Sensor initialize is not appro-
priate
 Auto levelizer control unit
Monitor itemStandard value
(Approx.)
INT SEN VALUE
54 %
*

EXL-42
< COMPONENT DIAGNOSIS >[XENON TYPE]
B2084 VOLTAGE UNDER LIMIT
B2084 VOLTAGE UNDER LIMIT
DTC LogicINFOID:0000000003805608
DTC DETECTION LOGIC
[B2084] VOLTAGE UNDER LIMIT
DTC CONFIRMATION PROCEDURE
1.ERASE DTC
Erase DTC memory of headlamp levelizer with self-diagnosis of CONSULT-III.
>> GO TO 2.
2.DTC CONFIRMATION
1. Turn the ignition switch ON.
2. Perform self-diagnosis of CONSULT-III.
Is B2084 detected?
YES >> Refer to EXL-42, "Diagnosis Procedure".
NO >> Refer to GI-35, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000003805609
1.CHECK POWER SUPPLY WITH CONSULT-III
1. Turn ignition switch ON.
2. Turn the lighting switch 1ST.
3. Select "INT SEN VOLT" of HEADLAMP LEVELIZER data monitor item.
4. Check the monitor status.
Is the measurement value normal?
YES >> Replace the auto levelizer control unit.
NO >> GO TO 2.
2.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check power supply and ground circuit of auto levelizer control unit. Refer to EXL-51, "
AUTO LEVELIZER
CONTROL UNIT : Diagnosis Procedure".
Is power supply and ground circuit normal?
YES >> Replace the auto levelizer control unit.
NO >> Repair or replace the malfunctioning part.
DTC detection condition DTC erase conditions Possible causes
Ignition power supply to auto levelizer control unit is 9 V or less for
1.5 seconds or more.Ignition switch OFF Harness or connector
 Auto levelizer control unit
Monitor itemStandard value
(Approx.)
INT SEN VOLT Battery voltage

B2085 LOWBEAM SIG OPEN LINE
EXL-43
< COMPONENT DIAGNOSIS >[XENON TYPE]
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B2085 LOWBEAM SIG OPEN LINE
DescriptionINFOID:0000000003805610
 Auto levelizer control unit inputs tail lamp signal from IPDM E/R.
 Auto levelizer control unit always outputs the voltage to detect the DTC.
DTC LogicINFOID:0000000003805611
DTC DETECTION LOGIC
[B2085] LOWBEAM SIG OPEN LINE
DTC CONFIRMATION PROCEDURE
1.ERASE DTC
Erase DTC memory of headlamp levelizer with self-diagnosis of CONSULT-III.
>> GO TO 2.
2.DTC CONFIRMATION
1. Turn the ignition switch ON.
2. Turn the lighting switch 1ST.
3. Perform self-diagnosis of CONSULT-III.
Is B2085 detected?
YES >> Refer to EXL-43, "Diagnosis Procedure".
NO >> Refer to GI-35, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000003805612
1.CHECK TAIL LAMP SIGNAL INPUT WITH CONSULT-III
1. Turn ignition switch ON.
2. Select "LIGHT SIGNAL" of HEADLAMP LEVELIZER data monitor item.
3. With operating the lighting switch, check the monitor status.
Is the measurement value normal?
YES >> Replace the auto levelizer control unit.
NO >> GO TO 2.
2.CHECK TAIL LAMP SIGNAL INPUT
1. Turn ignition switch OFF.
2. Disconnect the auto levelizer control unit connector.
3. Turn ignition switch ON.
4. With operating the lighting switch, check the voltage between the auto levelizer control unit harness con-
nector and the ground.
DTC detection condition DTC erase conditions Possible causes
Auto levelizer control unit detected that the tail lamp signal is the fol-
lowing condition:
2 V < tail lamp signal < 6 V Ignition switch OFF Harness or connector
 IPDM E/R
 Auto levelizer control unit
Monitor itemCondition
Standard value
(Approx.)
Lighting switch
LIGHT SIGNALOFF 2 V or less
1ST 6 V or more

EXL-44
< COMPONENT DIAGNOSIS >[XENON TYPE]
B2085 LOWBEAM SIG OPEN LINE
Is the measurement value normal?
YES >> Replace the auto levelizer control unit.
NO >> Repair the harnesses between auto levelizer control unit and IPDM E/R.
Te r m i n a l s
Condition
Vol tag e
(Approx.) (+) (−)
Auto levelizer control unit
Ground Connector Terminal Lighting switch
C8 6OFF 0 V
1ST Battery voltage

B2087 SHORT TO GROUND
EXL-47
< COMPONENT DIAGNOSIS >[XENON TYPE]
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B2087 SHORT TO GROUND
DTC LogicINFOID:0000000003805616
DTC DETECTION LOGIC
[B2087] SHORT TO GROUND
DTC CONFIRMATION PROCEDURE
1.ERASE DTC
Erase DTC memory of HEADLAMP LEVELIZER with self-diagnosis of CONSULT-III.
>> GO TO 2.
2.DTC CONFIRMATION
1. Turn the ignition switch ON.
2. Perform self-diagnosis of CONSULT-III.
YES >> Refer to EXL-47, "
Diagnosis Procedure".
NO >> Refer to GI-35, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000003805617
1.CHECK HEADLAMP LEVELIZER CIRCUIT OF CONSULT-III
1. Turn ignition switch ON.
2. Turn the lighting switch 1ST.
3. Select "ACT MEASURED" and "ACT OUTPUT" of HEADLAMP LEVELIZER data monitor item.
4. Check that “ACT MEASURED” value is within approximately ± 3% to “ACT OUTPUT” value.
NOTE:
“ACT MEASURED” value is approximately 0% when shorted to the ground.
Is the measurement value normal?
YES >> Replace the auto levelizer control unit.
NO >> GO TO 2.
2.HEADLAMP LEVELIZER CIRCUIT INSPECTION
Check the headlamp levelizer circuit for short to ground. Refer to EXL-60, "
Description".
Is the headlamp levelizer circuit normal?
YES >> Replace the auto levelizer control unit.
NO >> Repair or replace the malfunctioning part.
DTC detection condition DTC erase conditions Possible causes
Headlamp levelizer circuit is shorted to the ground for 1.5 seconds
or more.Ignition switch OFF Harness or connector
 Auto levelizer control unit

EXL-48
< COMPONENT DIAGNOSIS >[XENON TYPE]
B2088 SHORT TO BATTERY
B2088 SHORT TO BATTERY
DTC LogicINFOID:0000000003805618
DTC DETECTION LOGIC
[B2088] SHORT TO BATTERY
DTC CONFIRMATION PROCEDURE
1.ERASE DTC
Erase DTC memory of HEADLAMP LEVELIZER with self-diagnosis of CONSULT-III.
>> GO TO 2.
2.DTC CONFIRMATION
1. Turn the ignition switch ON.
2. Perform self-diagnosis of CONSULT-III.
Is B2088 detected?
YES >> Refer to EXL-48, "Diagnosis Procedure".
NO >> Refer to GI-35, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000003805619
1.CHECK HEADLAMP LEVELIZER CIRCUIT OF CONSULT-III
1. Turn ignition switch ON.
2. Turn the lighting switch 1ST.
3. Select "ACT MEASURED" and "ACT OUTPUT" of HEADLAMP LEVELIZER data monitor item.
4. Check that “ACT MEASURED” value is within approximately ± 3% to “ACT OUTPUT” value.
NOTE:
“ACT MEASURED” value is approximately 100% when shorted to the battery.
Is the measurement value normal?
YES >> Replace the auto levelizer control unit.
NO >> GO TO 2.
2.HEADLAMP LEVELIZER CIRCUIT INSPECTION
Check the headlamp levelizer circuit for short to battery. Refer to EXL-60, "
Description".
Is the headlamp levelizer circuit normal?
YES >> Replace the auto levelizer control unit.
NO >> Repair or replace the malfunctioning part.
DTC detection condition DTC erase conditions Possible causes
Headlamp levelizer circuit is shorted to the battery for 1.5 seconds
or more.Ignition switch OFF Harness or connector
 Auto levelizer control unit

EXL-58
< COMPONENT DIAGNOSIS >[XENON TYPE]
XENON HEADLAMP
XENON HEADLAMP
DescriptionINFOID: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 ProcedureINFOID: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

EXL-60
< COMPONENT DIAGNOSIS >[XENON TYPE]
HEADLAMP LEVELIZER CIRCUIT
HEADLAMP LEVELIZER CIRCUIT
DescriptionINFOID: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 CheckINFOID: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 ProcedureINFOID: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.
Te s t i t e m
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.
Te r m i n a l s
Te s t i t e m
Voltag e
(Approx.) (+) (−)
Auto levelizer control
unit
GroundLAMP TEST
Connector Terminal
C8 7MIN 1.4 V
MID 6.3 V
MAX 9.3 V

OPTICAL SENSOR
EXL-69
< COMPONENT DIAGNOSIS >[XENON TYPE]
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OPTICAL SENSOR
DescriptionINFOID:0000000003773573
Optical sensor converts the outside brightness (lux) to voltage and transmits the optical sensor signal to BCM.
Component Function CheckINFOID:0000000003773574
1.CHECK OPTICAL SENSOR SIGNAL BY CONSULT-III
CONSULT-III DATA MONITOR
1. Turn the ignition switch ON.
2. Select "OPTICAL SENSOR" of BCM (HEADLAMP) data monitor item.
3. Turn the lighting switch AUTO.
4. With the optical sensor illuminating, check the monitor status.
*: Illuminates the optical sensor. The value may be less than the standard value if brightness is weak.
Is the item status normal?
YES >> Optical sensor is normal.
NO >> Refer to EXL-69, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003773575
1.CHECK OPTICAL SENSOR POWER SUPPLY INPUT
1. Turn the ignition switch ON.
2. Turn the lighting switch AUTO.
3. Check the voltage between the optical sensor harness connector and the ground.
Is the measurement value normal?
YES >> GO TO 2.
NO >> GO TO 4.
2.CHECK OPTICAL SENSOR GROUND INPUT
Check the voltage between the optical sensor harness connector and the ground.
Is the measurement value normal?
YES >> GO TO 3.
NO >> GO TO 6.
3.CHECK OPTICAL SENSOR SIGNAL OUTPUT
Monitor item Condition Voltage (Approx.)
OPTICAL SENSOR Optical sensorWhen illuminating 3.1 V or more *
When shutting off light 0.6 V or less
Te r m i n a l s
Vo l ta g e
(Approx.) (+) (−)
Optical sensor
Ground Connector Terminal
M17 1 5 V
Te r m i n a l s
Vo l ta g e
(Approx.) (+) (−)
Optical sensor
Ground Connector Terminal
M17 3 0 V