2008 NISSAN TEANA headlamp

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

B2081 INITIAL NOT DONE
EXL-39
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B2081 INITIAL NOT DONE
DTC LogicINFOID:0000000003805602
DTC DETECTION LOGIC
[B2081] INITIAL NOT DONE
Diagnosis ProcedureINFOID:0000000003805603
1.SENSOR INITIALIZE
CONSULT-III WORK SUPPORT
Perform the sensor initialize.
>> Refer to EXL-10, "
SENSOR INITIALIZE : Special Repair Requirement (HEADLAMP AIMING
CONTROL SYSTEM)".
DTC detection condition DTC erase conditions Possible causes
Sensor initialization is not completed. Sensor initialization is completed Sensor initialization is not com-
pleted.
 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 %
*

B2083 SEN SIG NOT PLAUSIBLE
EXL-41
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B2083 SEN SIG NOT PLAUSIBLE
DTC LogicINFOID:0000000003805606
DTC DETECTION LOGIC
[B2083] SEN SIG NOT PLAUSIBLE
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. Start the engine.
2. Drive the vehicle for 5 minutes or more.
3. Perform self-diagnosis of CONSULT-III.
Is B2083 detected?
YES >> Refer to EXL-41, "Diagnosis Procedure".
NO >> Refer to GI-35, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000003805607
1.CHECK AUTO LEVELIZER CONTROL UNIT INSTALLATION CONDITION
Check the mounting part of auto levelizer control unit and its link for looseness and deformation.
Is it properly installed?
YES >> Replace the auto levelizer control unit.
NO >> Install auto levelizer control unit properly.
DTC detection condition DTC erase conditions Possible causes
When vehicle speed is 5 km/h (3.1 MPH) or more, the auto levelizer
control unit cannot detect any changes of the sensor lever angle for
5 minutes or more.Ignition switch OFF Auto levelizer control unit

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
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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

B2086 FRQ. OVER LIMIT
EXL-45
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B2086 FRQ. OVER LIMIT
DescriptionINFOID:0000000003805613
Auto levelizer control unit inputs vehicle speed signal (8-pules) from combination meter.
DTC LogicINFOID:0000000003805614
DTC DETECTION LOGIC
[B2086] FRQ. OVER 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. Start the engine.
2. Drive the vehicle at 40 km/h (25 MPH).
3. Perform self-diagnosis of CONSULT-III.
Is B2086 detected?
YES >> Refer to EXL-45, "Diagnosis Procedure".
NO >> Refer to GI-35, "
Intermittent Incident".
Diagnosis ProcedureINFOID:0000000003805615
1.CHECK VEHICLE SPEED SIGNAL INPUT WITH CONSULT-III
1. Turn ignition switch ON.
2. Select "SPEED SIG" of HEADLAMP LEVELIZER data monitor item.
3. While driving at 40 km/h (25 MPH), check the monitor status.
Is the measurement value normal?
YES >> Replace the auto levelizer control unit.
NO >> GO TO 2.
2.CHECK VEHICLE SPEED SIGNAL INPUT
1. Turn ignition switch OFF.
2. Disconnect the auto levelizer control unit connector.
3. Turn ignition switch ON.
4. While driving at 40 km/h (25 MPH), 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 vehicle speed signal is ab-
normal. [The vehicle speed is 340 km/h (211 MPH) or more for 1.5
seconds or more.]Ignition switch OFF Harness or connector
 Auto levelizer control unit
Monitor item ConditionStandard value
(Approx.)
SPEED SIGWhile driving at 40 km/h
(25 MPH)40 km/h (25
MPH)

B2087 SHORT TO GROUND
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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