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![INFINITI FX35 2008 Service Manual
FUEL INJECTOREC-1153
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Provide battery voltage between the following terminals, and then
interrupt it. Listen to each fuel injector oper INFINITI FX35 2008 Service Manual
FUEL INJECTOREC-1153
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Provide battery voltage between the following terminals, and then
interrupt it. Listen to each fuel injector oper](/manual-img/42/57017/w960_57017-2392.png)
FUEL INJECTOREC-1153
< SERVICE INFORMATION > [VK45DE]
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Provide battery voltage between the following terminals, and then
interrupt it. Listen to each fuel injector operating sound.
OK or NG
OK >>
INSPECTION END
NG >> GO TO 6.
6.CHECK SUB-HARNESS CIRCUIT FOR OPEN AND SHORT
1. Disconnect fuel injector harness connectors.
2. Check harness continuity between the following terminals. Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
Cylinder Harness connector terminal
(+) (–)
1
F201 5 3
32
51
76
2
F221 5 3
42
61
86
Operating sound should exist.
PBIB2449E
: Vehicle front 1. Fuel injector (Bank 2) 2. Fuel injector (Bank 1)
Harness connector terminal Fuel injector terminal F201 terminal 1
2
F201 terminal 2
F201 terminal 3
F201 terminal 6
F201 terminal 5 1
F221 terminal 1
2
F221 terminal 2
F221 terminal 3
F221 terminal 6
F221 terminal 5 1
Continuity should exist.
PBIB3235E
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EC-1154
< SERVICE INFORMATION >[VK45DE]
FUEL INJECTOR
OK or NG
OK >> GO TO 7.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
7.CHECK FUEL INJECTOR
Refer to EC-1154, "
Component Inspection".
OK or NG
OK >> GO TO 8.
NG >> Replace fuel injector.
8.CHECK INTERMITTENT INCIDENT
Refer to EC-717
.
>> INSPECTION END
Component InspectionINFOID:0000000001327055
FUEL INJECTOR
1. Disconnect fuel injector harness connector.
2. Check resistance between terminals as shown in the figure.
Removal and InstallationINFOID:0000000001327056
FUEL INJECTOR
Refer to EM-190.
Resistance: 13.5 - 17.5
Ω [at 10 - 60 °C (50 - 140 °F)]
PBIB1727E
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Page 2395 of 3924
![INFINITI FX35 2008 Service Manual
FUEL PUMPEC-1155
< SERVICE INFORMATION > [VK45DE]
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FUEL PUMP
DescriptionINFOID:0000000001327057
SYSTEM DESCRIPTION
*: ECM determines the start signal status by the sign INFINITI FX35 2008 Service Manual
FUEL PUMPEC-1155
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FUEL PUMP
DescriptionINFOID:0000000001327057
SYSTEM DESCRIPTION
*: ECM determines the start signal status by the sign](/manual-img/42/57017/w960_57017-2394.png)
FUEL PUMPEC-1155
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FUEL PUMP
DescriptionINFOID:0000000001327057
SYSTEM DESCRIPTION
*: 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
startability. 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 EC M stops pump operation and prevents battery discharging,
thereby improving safety. The ECM does not directly dr ive the fuel pump. It controls the ON/OFF fuel pump
relay, which in turn controls the fuel pump.
COMPONENT DESCRIPTION
A turbine type design fuel pump is used in the fuel tank.
CONSULT-III Reference Val ue in Data Monitor ModeINFOID:0000000001327058
Specification data are reference values.
Sensor Input signal to ECM ECM Function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed*
Fuel pump control Fuel pump relay
Battery Battery voltage*
Condition Fuel pump operation
Ignition switch is turned to ON. Operates for 1 second.
Engine running and cranking Operates.
When engine is stopped Stops in 1.5 seconds.
Except as shown above Sto ps .
PBIB1508E
MONITOR ITEM CONDITION SPECIFICATION
FUEL PUMP RLY For 1 seconds after turning ignition switch: ON
Engine running or cranking
ON
Except above OFF
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EC-1156
< SERVICE INFORMATION >[VK45DE]
FUEL PUMP
Wiring Diagram
INFOID:0000000001327059
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring in put/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground ot her than ECM terminals, such as the ground.
TBWM1363E
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![INFINITI FX35 2008 Service Manual
FUEL PUMPEC-1157
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Diagnosis ProcedureINFOID:0000000001327060
1.CHECK OVERALL FUNCTION
1. Turn ignition switch ON.
2. Pinch fuel feed ho INFINITI FX35 2008 Service Manual
FUEL PUMPEC-1157
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Diagnosis ProcedureINFOID:0000000001327060
1.CHECK OVERALL FUNCTION
1. Turn ignition switch ON.
2. Pinch fuel feed ho](/manual-img/42/57017/w960_57017-2396.png)
FUEL PUMPEC-1157
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Diagnosis ProcedureINFOID:0000000001327060
1.CHECK OVERALL FUNCTION
1. Turn ignition switch ON.
2. Pinch fuel feed hose (1) with two fingers.
OK or NG
OK >> INSPECTION END
NG >> GO TO 2.
2.CHECK FUEL PUMP POWER SUPPLY CIRCUIT-I
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Turn ignition switch ON.
4. Check voltage between ECM terminal 113 and ground with CONSULT-III or tester.
OK or NG
OK >> GO TO 5.
NG >> GO TO 3.
3.CHECK FUEL PUMP POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connector E8.
3. Turn ignition switch ON.
4. Check voltage between IPDM E/R terminal 40 and ground with CONSULT-III or tester.
OK or NG
OK >> GO TO 4.
NG >> GO TO 11.
TER- MI-
NAL
NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
11 3 G Y / R F u e l p u m p r e l a y [Ignition switch: ON]
For 1 second after turning ignition switch ON
[Engine is running]
0 - 1.5V
[Ignition switch: ON]
More than 1 second after turning ignition switch ON BATTERY VOLTAGE
(11 - 14V)
Fuel pressure pulsation should
be felt on the fuel feed
hose for 1 second after ignition switch is turned ON.
PBIB3245E
Voltage: Battery voltage
PBIB1187E
Voltage: Battery voltage
PBIB1926E
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![INFINITI FX35 2008 Service Manual
EC-1158
< SERVICE INFORMATION >[VK45DE]
FUEL PUMP
4.DETECT MALFUNCTIONING PART
Check the following.
Harness connectors E211, M41
Harness for open or short between IPDM E/R and ECM
>> Repair open INFINITI FX35 2008 Service Manual
EC-1158
< SERVICE INFORMATION >[VK45DE]
FUEL PUMP
4.DETECT MALFUNCTIONING PART
Check the following.
Harness connectors E211, M41
Harness for open or short between IPDM E/R and ECM
>> Repair open](/manual-img/42/57017/w960_57017-2397.png)
EC-1158
< SERVICE INFORMATION >[VK45DE]
FUEL PUMP
4.DETECT MALFUNCTIONING PART
Check the following.
Harness connectors E211, M41
Harness for open or short between IPDM E/R and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
5.CHECK FUEL PUMP POWER SUPPLY CIRCUIT-III
1. Turn ignition switch OFF.
2. Reconnect all harness connectors disconnected.
3. Disconnect “fuel level sensor unit and fuel pump” harness con- nector.
4. Turn ignition switch ON.
5. Check voltage between “fuel level sensor unit and fuel pump”
terminal 1 and ground with CONSULT-III or tester.
OK or NG
OK >> GO TO 9.
NG >> GO TO 6.
6.CHECK 15A FUSE
1. Turn ignition switch OFF.
2. Disconnect 15A fuse.
3. Check 15A fuse.
OK or NG
OK >> GO TO 7.
NG >> Replace fuse.
7.CHECK FUEL PUMP POWER SUPPLY CIRCUIT-IV
1. Disconnect IPDM E/R harness connector E8.
2. Check harness continuity between IPDM E/R terminal 39 and “fuel level sensor unit and fuel pump” termi-
nal 1.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 11.
NG >> GO TO 8.
8.DETECT MALFUNCTIONING PART
Check the following.
Harness connectors E206, B6
PBIB1507E
Voltage: Battery voltage should exist for 1 sec- ond after ignition switch is turned ON.
PBIB0795E
Continuity should exist.
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![INFINITI FX35 2008 Service Manual
FUEL PUMPEC-1159
< SERVICE INFORMATION > [VK45DE]
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Harness for open or short between IPDM E/R
and “fuel level sensor unit and fuel pump”
>> Repair harness or con INFINITI FX35 2008 Service Manual
FUEL PUMPEC-1159
< SERVICE INFORMATION > [VK45DE]
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Harness for open or short between IPDM E/R
and “fuel level sensor unit and fuel pump”
>> Repair harness or con](/manual-img/42/57017/w960_57017-2398.png)
FUEL PUMPEC-1159
< SERVICE INFORMATION > [VK45DE]
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Harness for open or short between IPDM E/R
and “fuel level sensor unit and fuel pump”
>> Repair harness or connectors.
9.CHECK FUEL PUMP GROUND CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between “fuel level sensor unit and fuel pump” terminal 3 and ground.
Refer to Wiring Diagram.
2. Also check harness for short to power.
OK or NG
OK >> GO TO 10.
NG >> Repair open circuit or short to power in harness or connectors.
10.CHECK FUEL PUMP
Refer to EC-1159, "
Component Inspection".
OK or NG
OK >> GO TO 11.
NG >> Replace fuel pump.
11 .CHECK INTERMITTENT INCIDENT
Refer to EC-717
.
OK or NG
OK >> Replace IPDM E/R. Refer to PG-17.
NG >> Repair or replace harness or connectors.
Component InspectionINFOID:0000000001327061
FUEL PUMP
1. Disconnect “fuel level sensor unit and fuel pump” harness connector.
2. Check resistance between “fuel level sensor unit and fuel pump”
terminals 1 and 3.
Removal and InstallationINFOID:0000000001327062
FUEL PUMP
Refer to FL-4.
Continuity should exist.
Resistance: 0.2 - 5.0
Ω [at 25 °C (77 °F)]
SEC918C
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EC-1160
< SERVICE INFORMATION >[VK45DE]
ICC BRAKE SWITCH
ICC BRAKE SWITCH
Component DescriptionINFOID:0000000001327063
When depress on the brake pedal, ICC brake switch is turned OFF
and stop lamp switch is turned ON. ECM detects the state of the
brake pedal by this input of two kinds (ON/OFF signal)
Refer to
ACS-7
for the ICC function.
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000001327064
Specification data are reference values.
PBIB2558E
MONITOR ITEM CONDITION SPECIFICATION
BRAKE SW1
(ICC brake switch) Ignition switch: ON Brake pedal: Fully released ON
Brake pedal: Slightly depressed OFF
BRAKE SW2
(Stop lamp switch) Ignition switch: ON Brake pedal: Fully released OFF
Brake pedal: Slightly depressed ON
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