2008 NISSAN TEANA Service Manual

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Page 1793 of 5121

NISSAN TEANA 2008 Service Manual 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 sh

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

Page 1794 of 5121

NISSAN TEANA 2008 Service Manual 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 a

Page 1795 of 5121

NISSAN TEANA 2008 Service Manual 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 th

Page 1796 of 5121

NISSAN TEANA 2008 Service Manual FUEL INJECTOR
EC-335
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.DETECT MALFUNCTIONING PART
Check the foll

Page 1797 of 5121

NISSAN TEANA 2008 Service Manual 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 connect

Page 1798 of 5121

NISSAN TEANA 2008 Service Manual FUEL PUMP
EC-337
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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FUEL PUMP
DescriptionINFOID:0000000003856843
*: ECM determines the start signal status by the signals of engine

FUEL PUMP
EC-337
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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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

Page 1799 of 5121

NISSAN TEANA 2008 Service Manual EC-338
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
FUEL PUMP
2.CHECK FUEL PUMP POWER SUPPLY CIRCUIT-II
Check the voltage between IPDM E/R harness connector and ground.
Is the inspection result normal?
YES

Page 1800 of 5121

NISSAN TEANA 2008 Service Manual FUEL PUMP
EC-339
< COMPONENT DIAGNOSIS >[VQ25DE, VQ35DE]
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Check the following.
Harness connectors E104, B4
IPDM E/R connector E10
Harness for open or short between

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