check engine NISSAN TEANA 2008 Service Manual

B2086 FRQ. OVER LIMIT
EXL-45
< COMPONENT DIAGNOSIS >[XENON TYPE]
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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)

EXL-50
< COMPONENT DIAGNOSIS >[XENON TYPE]
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
BCM (BODY CONTROL MODULE)
BCM (BODY CONTROL MODULE) : Diagnosis ProcedureINFOID:0000000003894263
1.CHECK FUSE AND FUSIBLE LINK
Check that the following fuse and fusible link are not blown.
Is the fuse fusing?
YES >> Replace the blown fuse or fusible link after repairing the affected circuit if a fuse or fusible link is
blown.
NO >> GO TO 2.
2.CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connectors.
3. Check voltage between BCM harness connector and ground.
Is the measurement value normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
Does continuity exist?
YES >> INSPECTION END
NO >> Repair harness or connector.
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM) : Di-
agnosis Procedure
INFOID:0000000003894265
1.CHECK FUSES AND FUSIBLE LINK
Check that the following IPDM E/R fuses or fusible links are not blown.
Signal name Fuse and fusible link No.
Battery power supplyI
10
Te r m i n a l s
Voltag e
(Approx.) (+) (−)
BCM
Ground Connector Terminal
M118 1
Battery voltage
M119 11
BCM
GroundContinuity
Connector Terminal
M119 13 Existed

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

HEADLAMP AIMING ADJUSTMENT
EXL-173
< ON-VEHICLE MAINTENANCE >[XENON TYPE]
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ON-VEHICLE MAINTENANCE
HEADLAMP AIMING ADJUSTMENT
DescriptionINFOID:0000000003774534
PREPARATION BEFORE ADJUSTING
NOTE:
 For details, refer to the regulations in your own country.
 Perform aiming if the vehicle front body has been repaired and/or the headlamp assembly has been
replaced.
Before performing aiming adjustment, check the following.  Adjust the tire pressure to the specification.
 Fill with fuel, engine coolant and each oil.
 Maintain the unloaded vehicle condition. (Remove luggage from the passenger compartment and the trunk
room.)
NOTE:
Do not remove the temporary tire, jack and on-vehicle tool.
 Wipe out dirt on the headlamp.
CAUTION:
Never use organic solvent (thinner, gasoline etc.)
 Ride alone on the driver seat.
AIMING ADJUSTMENT SCREW
JPLIA1085ZZ

EXL-178
< ON-VEHICLE MAINTENANCE >[XENON TYPE]
FRONT FOG LAMP AIMING ADJUSTMENT
FRONT FOG LAMP AIMING ADJUSTMENT
DescriptionINFOID:0000000003773617
PREPARATION BEFORE ADJUSTING
NOTE:
 For details, refer to the regulations in your own country.
Before performing aiming adjustment, check the following.
 Adjust the tire pressure to the specification.
 Fill with fuel, engine coolant and each oil.
 Maintain the unloaded vehicle condition. (Remove luggage from the passenger compartment and the lug-
gage room.)
NOTE:
Do not remove the temporary tire, jack and on-vehicle tool.
 Wipe out dirt on the headlamp.
CAUTION:
Never use organic solvent (thinner, gasoline etc.)
 Ride alone on the driver seat.
AIMING ADJUSTMENT SCREW
 Turn the aiming adjusting screw for adjustment.
 For the position and direction of the adjusting screw, refer to the
figure.
NOTE:
A screwdriver or hexagonal wrench [6 mm (0.24 in)] can be used
for adjustment.
Aiming Adjustment ProcedureINFOID:0000000003773618
1. Place the screen.
NOTE:
 Stop the vehicle facing the wall.
 Place the board on a plain road vertically.
2. Face the vehicle with the screen. Maintain 10 m (32.8 ft) between the front fog lamp center and the
screen.
3. Start the engine. Illuminate the front fog lamp.
CAUTION:
Never cover the lens surface with a tape etc. The lens is made of resin.
NOTE:
Shut off the headlamp light with the board to prevent from illuminating the adjustment screen.
4. Adjust the cutoff line height (A) with the aiming adjustment screw so that the distance (X) between the hor-
izontal center line of front fog lamp (H) and (A) becomes 200 mm (7.87 in).
Front fog lamp light distribution on the screen
A: UP
B: DOWN
JPLIA1086ZZ
JPLIA0008ZZ

DIAGNOSIS SYSTEM (IPDM E/R)
EXL-219
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DIAGNOSIS SYSTEM (IPDM E/R)
Diagnosis DescriptionINFOID:0000000003894312
AUTO ACTIVE TEST
Description
In auto active test mode, the IPDM E/R sends a drive signal to the following systems to check their operation.
 Oil pressure warning lamp
 Front wiper (LO, HI)
 Parking lamps
 License plate lamps
 Tail lamps
 Front fog lamps
 Headlamps (LO, HI)
 A/C compressor (magnet clutch)
 Cooling fan
Operation Procedure
1. Close the hood and lift the wiper arms from the windshield. (Prevent windshield damage due to wiper
operation)
NOTE:
When auto active test is performed with hood opened, sprinkle water on windshield beforehand.
2. Turn ignition switch OFF.
3. Turn the ignition switch ON, and within 20 seconds, press the driver door switch 10 times. Then turn the
ignition switch OFF.
CAUTION:
Close passenger door.
4. Turn the ignition switch ON within 10 seconds. After that the horn sounds once and the auto active test
starts.
5. The oil pressure warning lamp starts blinking when the auto active test starts.
6. After a series of the following operations is repeated 3 times, auto active test is completed.
NOTE:
When auto active test mode has to be cancelled halfway through test, turn ignition switch OFF.
CAUTION:
 If auto active test mode cannot be actuated, check door switch system. Refer to DLK-57,
"ComponentFunctionCheck".
 Do not start the engine.
Inspection in Auto Active Test Mode
When auto active test mode is actuated, the following 5 steps are repeated 3 times.
Operation
sequenceInspection location Operation
A Oil pressure warning lamp Blinks continuously during operation of auto active test
1 Front wiper LO for 5 seconds → HI for 5 seconds
2Parking lamps
 License plate lamps
Tail lamps
 Front fog lamps10 seconds
3 Headlamps LO ⇔ HI 5 times
4 A/C compressor (magnet clutch) ON ⇔ OFF 5 times
5 Cooling fan LO for 5 seconds → MID for 3 seconds → HI for 2 seconds

EXL-224
< COMPONENT DIAGNOSIS >[HALOGEN TYPE]
POWER SUPPLY AND GROUND CIRCUIT
COMPONENT DIAGNOSIS
POWER SUPPLY AND GROUND CIRCUIT
BCM (BODY CONTROL MODULE)
BCM (BODY CONTROL MODULE) : Diagnosis ProcedureINFOID:0000000003894317
1.CHECK FUSE AND FUSIBLE LINK
Check that the following fuse and fusible link are not blown.
Is the fuse fusing?
YES >> Replace the blown fuse or fusible link after repairing the affected circuit if a fuse or fusible link is
blown.
NO >> GO TO 2.
2.CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect BCM connectors.
3. Check voltage between BCM harness connector and ground.
Is the measurement value normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK GROUND CIRCUIT
Check continuity between BCM harness connector and ground.
Does continuity exist?
YES >> INSPECTION END
NO >> Repair harness or connector.
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM) : Di-
agnosis Procedure
INFOID:0000000003894318
1.CHECK FUSES AND FUSIBLE LINK
Check that the following IPDM E/R fuses or fusible links are not blown.
Signal name Fuse and fusible link No.
Battery power supplyI
10
Te r m i n a l s
Voltag e
(Approx.) (+) (−)
BCM
Ground Connector Terminal
M118 1
Battery voltage
M119 11
BCM
GroundContinuity
Connector Terminal
M119 13 Existed

EXL-336
< ON-VEHICLE MAINTENANCE >[HALOGEN TYPE]
HEADLAMP AIMING ADJUSTMENT
ON-VEHICLE MAINTENANCE
HEADLAMP AIMING ADJUSTMENT
DescriptionINFOID:0000000003829238
PREPARATION BEFORE ADJUSTING
NOTE:
 For details, refer to the regulations in your own country.
 Perform aiming if the vehicle front body has been repaired and/or the headlamp assembly has been
replaced.
Before performing aiming adjustment, check the following.  Adjust the tire pressure to the specification.
 Fill with fuel, engine coolant and each oil.
 Maintain the unloaded vehicle condition. (Remove luggage from the passenger compartment and the trunk
room.)
NOTE:
Do not remove the temporary tire, jack and on-vehicle tool.
 Wipe out dirt on the headlamp.
CAUTION:
Never use organic solvent (thinner, gasoline etc.)
 Ride alone on the driver seat.
 Headlamp aiming switch sets to “0”.
AIMING ADJUSTMENT SCREW
JPLIA1104ZZ

FRONT FOG LAMP AIMING ADJUSTMENT
EXL-341
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FRONT FOG LAMP AIMING ADJUSTMENT
DescriptionINFOID:0000000003894358
PREPARATION BEFORE ADJUSTING
NOTE:
 For details, refer to the regulations in your own country.
Before performing aiming adjustment, check the following.
 Adjust the tire pressure to the specification.
 Fill with fuel, engine coolant and each oil.
 Maintain the unloaded vehicle condition. (Remove luggage from the passenger compartment and the lug-
gage room.)
NOTE:
Do not remove the temporary tire, jack and on-vehicle tool.
 Wipe out dirt on the headlamp.
CAUTION:
Never use organic solvent (thinner, gasoline etc.)
 Ride alone on the driver seat.
AIMING ADJUSTMENT SCREW
 Turn the aiming adjusting screw for adjustment.
 For the position and direction of the adjusting screw, refer to the
figure.
NOTE:
A screwdriver or hexagonal wrench [6 mm (0.24 in)] can be used
for adjustment.
Aiming Adjustment ProcedureINFOID:0000000003894359
1. Place the screen.
NOTE:
 Stop the vehicle facing the wall.
 Place the board on a plain road vertically.
2. Face the vehicle with the screen. Maintain 10 m (32.8 ft) between the front fog lamp center and the
screen.
3. Start the engine. Illuminate the front fog lamp.
CAUTION:
Never cover the lens surface with a tape etc. The lens is made of resin.
NOTE:
Shut off the headlamp light with the board to prevent from illuminating the adjustment screen.
4. Adjust the cutoff line height (A) with the aiming adjustment screw so that the distance (X) between the hor-
izontal center line of front fog lamp (H) and (A) becomes 200 mm (7.87 in).
Front fog lamp light distribution on the screen
A: UP
B: DOWN
JPLIA1086ZZ
JPLIA0008ZZ

FL-2
< PRECAUTION >
PRECAUTIONS
PRECAUTION
PRECAUTIONS
General PrecautionsINFOID:0000000003793245
WARNING:
When replacing fuel line parts, be sure to observe the following.
• Put a “CAUTION: FLAMMABLE” sign in the workshop.
 Be sure to work in a well ventilated area and furnish workshop with a CO
2 fire extinguisher.
 Never smoke while servicing fuel system. Keep open flames and sparks away from the work area.
CAUTION:
 Use gasoline required by the regulations for octane number. Refer to GI-29, "
Fuel".
 Before removing fuel line parts, perform out the following procedures:
- Put drained fuel in an explosion-proof container and put the lid on securely. Keep the container in
safe area.
- Release fuel pressure from the fuel lines. Refer to EC-411, "
Inspection".
- Disconnect the battery cable from the negative terminal.
 Always replace O-ring and clamps with new ones.
 Never kink or twist tubes when they are being installed.
 Never tighten hose clamps excessively to avoid damaging hoses.
 After installing tubes, check there is no fuel leakage at connections in the following steps.
- Apply fuel pressure to fuel lines with turning ignition switch “ON” (with engine stopped). Then check
for fuel leakage at connections.
- Start engine and rev it up and check for fuel leakage at connections.
 Use only a genuine NISSAN fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the
“MI” may come on.
 For servicing “Evaporative Emission System” parts, refer to EC-76, "
System Diagram".