ignition NISSAN TEANA 2008 Service Manual

COOLING FAN
EC-325
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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2.DETECT MALFUNCTIONING PART
Check the following.
 40A fusible link (letter K)
 10A fuse (No.42)
 IPDM E/R harness connector E10
 Harness for open or short between cooling fan relay-2 and battery
 Harness for open or short between cooling fan relay-3 and battery
 Harness for open or short between cooling fan relay-2 and IPDM E/R
 Harness for open or short between cooling fan relay-3 and IPDM E/R
>> Repair open circuit, short to ground or short to power in harness or connectors.
3.CHECK COOLING FAN RELAY OUTPUT SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connectors.
3. Check the continuity between cooling fan relay-2, -3 harness connectors and IPDM E/R harness connec-
tor.
4. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair open circuit, short to ground or short to power in harness or connectors.
4.CHECK COOLING FAN MOTOR POWER SUPPLY CIRCUIT
1. Disconnect cooling fan motor-1 harness connector.
2. Check the voltage between cooling fan motor-1 harness connector and ground.
Is the inspection result normal?
YES >> GO TO 6.
NO >> GO TO 5.
5.DETECT MALFUNCTIONING PART
Check the following.
 Harness connector E70, E305
 40A fusible link (letter M)
 Harness for open or short between cooling fan motor-1 and battery
>> Repair open circuit, short to ground or short to power in harness or connectors.
6.CHECK COOLING FAN MOTOR CIRCUIT-I
1. Disconnect cooling fan motor-2 harness connector.
2. Check the continuity between cooling fan relay-2, -3 harness connectors and cooling fan motor-1, -2 har-
ness connectors.
Cooling fan relay IPDM E/R
Continuity
Connector Terminal Connector Terminal
E57
(cooling fan relay-2)1E1142
Existed
E59
(cooling fan relay-3)1E1034
Cooling fan motor-1
Ground Voltage
Connector Terminal
E3011
Ground Battery voltage
2

COOLING FAN
EC-327
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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2. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 11.
NO >> Repair open circuit, short to ground or short to power in harness or connectors.
11 .CHECK COOLING FAN MOTOR CIRCUIT-IV
1. Check the continuity between cooling fan motor-2 harness connector and ground.
2. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 12.
NO >> Repair open circuit, short to ground or short to power in harness or connectors.
12.CHECK COOLING FAN RELAYS-2 AND -3
Refer to EC-328, "
Component Inspection (Cooling Fan Relay)".
Is the inspection result normal?
YES >> GO TO 13.
NO >> Replace malfunctioning cooling fan relay.
13.CHECK COOLING FAN MOTORS-1 AND -2
Refer to EC-327, "
Component Inspection (Cooling Fan Motor)".
Is the inspection result normal?
YES >> GO TO 14.
NO >> Replace malfunctioning cooling fan motor.
14.CHECK INTERMITTENT INCIDENT
Perform GI-35, "
Intermittent Incident".
Is the inspection result normal?
YES >> Replace IPDM E/R.
NO >> Repair or replace harness connectors.
Component Inspection (Cooling Fan Motor)INFOID:0000000003856830
1.CHECK COOLING FAN MOTOR
1. Turn ignition switch OFF.
2. Disconnect cooling fan motor harness connector.
3. Supply cooling fan motor terminals with battery voltage and check operation.
Cooling fan motor
Ground Continuity
Connector Terminal
E57
(cooling fan relay-2)6
Ground Existed
E59
(cooling fan relay-3)6
Cooling fan motor-2
Ground Continuity
Connector Terminal
E3023
Ground Existed
4

ELECTRICAL LOAD SIGNAL
EC-329
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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ELECTRICAL LOAD SIGNAL
DescriptionINFOID:0000000003856832
The electrical load signal (Headlamp switch signal, rear window defogger switch signal, etc.) is transferred
through the CAN communication line from BCM to ECM via IPDM E/R.
Component Function CheckINFOID:0000000003856833
1.CHECK REAR WINDOW DEFOGGER SWITCH FUNCTION
1. Turn ignition switch ON.
2. Connect CONSULT-III and select “DATA MONITOR” mode.
3. Select “LOAD SIGNAL” and check indication under the following conditions.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Go to EC-329, "
Diagnosis Procedure".
2.CHECK LIGHTING SWITCH FUNCTION
Check “LOAD SIGNAL” indication under the following conditions.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Go to EC-329, "
Diagnosis Procedure".
3.CHECK HEATER FAN CONTROL SWITCH FUNCTION
Select “HEATER FAN SW” and check indication under the following conditions.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-329, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003856834
1.INSPECTION START
Confirm the malfunctioning circuit (rear window defogger, headlamp or heater fan). Refer to EC-329, "
Compo-
nent Function Check".
Which circuit is related to the incident?
Rear window defogger>>GO TO 2.
Headlamp>>GO TO 3.
Heater fan>>GO TO 4.
2.CHECK REAR WINDOW DEFOGGER SYSTEM
Refer to DEF-3, "
Work Flow".
Monitor item Condition Indication
LOAD SIGNAL Rear window defogger switchON ON
OFF OFF
Monitor item Condition Indication
LOAD SIGNAL Lighting switchON at 2nd position ON
OFF OFF
Monitor item Condition Indication
HEATER FAN SW Heater fan control switchON ON
OFF OFF

ELECTRONIC CONTROLLED ENGINE MOUNT
EC-331
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ELECTRONIC CONTROLLED ENGINE MOUNT
DescriptionINFOID:0000000003856835
The electronic controlled engine mount control solenoid valve controls the intake manifold vacuum signal for
electronic controlled engine mount. The electronic controlled engine mount control solenoid valve is moved by
ON/OFF signal from the ECM. When the solenoid is OFF, the vacuum signal from the intake manifold is cut.
When the solenoid is ON, the intake manifold vacuum signal is sent to the electronic controlled engine mount.
Component Function CheckINFOID:0000000003856836
1.CHECK OVERALL FUNCTION
1. Start engine and warm it up to normal operating temperature.
2. Selector level position is D while depressing the brake pedal and parking brake pedal.
3. Disconnect electronic controlled engine mount control solenoid valve harness connector.
4. Check that body vibration increases compared to the condition of step 2 above (with vehicle stopped).
Is the inspection result normal?
YES >> INSPECTION END
NO >>EC-331, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003856837
1.CHECK VACUUM SOURCE
1. Turn ignition switch OFF.
2. Reconnect electronic controlled engine mount control solenoid valve harness connector.
3. Disconnect vacuum hose connected to electronic controlled engine mount.
4. Start engine and let it idle.
5. Check vacuum hose for vacuum existence.
Is the inspection result normal?
YES >> GO TO 7.
NO >> GO TO 2.
2.CHECK VACUUM HOSES AND VACUUM GALLERY
1. Turn ignition switch OFF.
2. Check vacuum hoses and vacuum gallery for clogging, cracks or improper connection. Refer to EC-68,
"System Diagram".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair or replace vacuum hoses and vacuum gallery.
3.CHECK ELECTRONIC CONTROLLED ENGINE MOUNT CONTROL SOLENOID VALVE POWER SUPPLY
CIRCUIT
1. Disconnect electronic controlled engine mount control solenoid valve harness connector.
2. Turn ignition switch ON.
3. Check the voltage between front electronic controlled engine mount harness connector and ground.
Is the inspection result normal?
YES >> GO TO 5.
NO >> GO TO 4.
4.DETECT MALFUNCTIONING PARTVacuum should exist.
Electronic controlled engine mount
control solenoid valve
Ground Voltage
Connector Terminal
F11 1 Ground Battery voltage

EC-332
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
ELECTRONIC CONTROLLED ENGINE MOUNT
Check the following.
 Harness connectors E6, F123
 10A fuse (No. 3)
 Fuse block (J/B) E103
 Harness for open or short between electronic controlled engine mount control solenoid valve and fuse
>> Repair open circuit, short to ground or short to power in harness or connectors.
5.CHECK ELECTRONIC CONTROLLED ENGINE MOUNT CONTROL SOLENOID VALVE OUTPUT SIG-
NAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check the continuity between ECM harness connector and electronic controlled engine mount control
solenoid valve harness connector.
3. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 6.
NO >> Repair open circuit or short to ground or short to power in harness connectors.
6.CHECK ELECTRONIC CONTROLLED ENGINE MOUNT CONTROL SOLENOID VALVE
Refer to EC-332, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 7.
NO >> Replace electronic controlled engine mount control solenoid valve.
7.CHECK ELECTRONIC CONTROLLED ENGINE MOUNT
1. Turn ignition switch OFF.
2. Install vacuum pump (A) to electronic controlled engine mount
(1).
3. Check that a vacuum is maintained when applying the vacuum
of -40 kPa (-400 mbar, -300 mmHg, -11.81 inHg) to electronic
controlled engine mount.
4. Also visually check electronic controlled engine mount.
Is the inspection result normal?
YES >> GO TO 8.
NO >> Replace electronic controlled engine mount.
8.CHECK INTERMITTENT INCIDENT
Refer to GI-35, "
Intermittent Incident".
Is the inspection result normal?
YES >> Replace intake manifold collector.
NO >> Repair or replace malfunctioning part.
Component InspectionINFOID:0000000003856838
1.CHECK ELECTRONIC CONTROLLED ENGINE MOUNT CONTROL SOLENOID VALVE
With CONSULT-III
1. Turn ignition switch OFF.
2. Reconnect electronic controlled engine mount control solenoid valve harness connector.
3. Disconnect vacuum hoses connected to electronic controlled engine mount control solenoid valve.
4. Turn ignition switch ON.
ECMElectronic controlled engine
mount control solenoid valve
Continuity
Connector Terminal Connector Terminal
F7 28 F11 2 Existed
MBIB1237E

ELECTRONIC CONTROLLED ENGINE MOUNT
EC-333
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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5. Select “ENGINE MOUNTING” in “ACTIVE TEST” mode with CONSULT-III.
6. Check air passage continuity and operation delay time under the
following conditions.
Without CONSULT-III
1. Turn ignition switch OFF.
2. Disconnect electronic controlled engine mount control solenoid
valve harness connector.
3. Disconnect vacuum hoses connected to electronic controlled engine mount control solenoid valve.
4. Check air passage continuity and operation delay time under the
following conditions.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace electronic controlled engine mount control sole-
noid valve.
Condition
(ENGINE MOUNTING)Air passage continuity
between (A) and (B)Air passage continuity
between (A) and (C)
TRVL Existed Not existed
IDLE Not existed Existed
ConditionAir passage continuity
between (A) and (B)Air passage continuity
between (A) and (C)
12 V direct current supply be-
tween terminals 1 and 2Existed Not existed
No supply Not existed Existed
JMBIA0180ZZ
PBIB2532E

EC-334
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
FUEL INJECTOR
FUEL INJECTOR
DescriptionINFOID:0000000003856839
The fuel injector is a small, precise solenoid valve. When the ECM
supplies a ground to the fuel injector circuit, the coil in the fuel injec-
tor is energized. The energized coil pulls the ball valve back and
allows fuel to flow through the fuel injector into the intake manifold.
The amount of fuel injected depends upon the injection pulse dura-
tion. Pulse duration is the length of time the fuel injector remains
open. The ECM controls the injection pulse duration based on
engine fuel needs.
Component Function CheckINFOID:0000000003856840
1.INSPECTION START
Turn ignition switch to START.
Are any cylinders ignited?
YES >> GO TO 2.
NO >> Go to EC-334, "
Diagnosis Procedure".
2.CHECK FUEL INJECTOR FUNCTION
With CONSULT-III
1. Start engine.
2. Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT-III.
3. Check that each circuit produces a momentary engine speed drop.
Without CONSULT-III
1. Start engine.
2. Listen to each fuel injector operating sound.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-334, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003856841
1.CHECK FUEL INJECTOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect fuel injector harness connector.
3. Turn ignition switch ON.
4. Check the voltage between fuel injector harness connector and ground.
PBIA9664J
Clicking sound should be heard.
PBIB3332E

FUEL INJECTOR
EC-335
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Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.DETECT MALFUNCTIONING PART
Check the following.
 10A fuse (No.44)
 IPDM E/R harness connector E11
 Harness for open or short between fuel injector and fuse
>> Repair open circuit, short to ground or short to power in harness or connectors.
3.CHECK FUEL INJECTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between fuel injector harness connector and ECM harness connector.
4. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair open circuit, short to ground or short to power in harness or connectors.
4.CHECK FUEL INJECTOR
Refer to EC-336, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Replace malfunctioning fuel injector.
5.CHECK INTERMITTENT INCIDENT
Refer to GI-35, "
Intermittent Incident".
Is the inspection result normal?
YES >> Replace IPDM E/R.
NO >> INSPECTION END
Fuel injector
Ground Voltage
Cylinder Connector Terminal
1F371
Ground Battery voltage 2F381
3F391
4F401
5F411
6F421
Fuel injector ECM
Continuity
Cylinder Connector Terminal Connector Terminal
1F372
F732
Existed 2F382 31
3F392 30
4F402 29
5F412 3
6F422 1

EC-336
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
FUEL INJECTOR
Component Inspection
INFOID:0000000003856842
1.CHECK FUEL INJECTOR
1. Turn ignition switch OFF.
2. Disconnect fuel injector harness connector.
3. Check resistance between fuel injector terminals as per the fol-
lowing.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace malfunctioning fuel injector.
Terminals Resistance
1 and 2 11.1 - 14.5 Ω [at 10 - 60°C (50 - 140°F)]
PBIB1727E

FUEL PUMP
EC-337
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FUEL PUMP
DescriptionINFOID:0000000003856843
*: ECM determines the start signal status by the signals of engine speed and battery voltage.
The ECM activates the fuel pump for several seconds after the ignition switch is turned ON to improve engine
start ability. If the ECM receives a engine speed signal from the camshaft position sensor (PHASE), it knows
that the engine is rotating, and causes the pump to operate. If the engine speed signal is not received when
the ignition switch is ON, the engine stalls. The ECM stops pump operation and prevents battery discharging,
thereby improving safety. The ECM does not directly drive the fuel pump. It controls the ON/OFF fuel pump
relay, which in turn controls the fuel pump.
Component Function CheckINFOID:0000000003856844
1.CHECK FUEL PUMP FUNCTION
1. Turn ignition switch ON.
2. Pinch fuel feed hose with two fingers.
Is the inspection result normal?
YES >> INSPECTION END
NO >>EC-337, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000003856845
1.CHECK FUEL PUMP POWER SUPPLY CIRCUIT-I
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Turn ignition switch ON.
4. Check the voltage between ECM harness connector and ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> GO TO 2.
Sensor Input signal to ECM ECM Function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)Engine speed*
Fuel pump controlFuel pump relay
↓
Fuel pump
Battery Battery voltage*
Condition Fuel pump operation
Ignition switch is turned to ON. Operates for 1 second.
Engine running and crankingOperates.
When engine is stopped Stops in 1.5 seconds.
Except as shown aboveSto ps .
: Vehicle front (Illustration shows
the view with intake air duct re-
moved)
Fuel pressure pulsation should be felt on the fuel feed
hose for 1 second after ignition switch is turned ON.
JMBIA1391ZZ
ECM
Ground Voltage
Connector Terminal
F7 14 Ground Battery voltage