Infiniti G35 (V35). Manual — part 444
FUEL INJECTOR
EC-657
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EC
7.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors M72, F102
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Harness connectors F33, F221
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Fuse block (J/B) connector M4
●
10A fuse
●
Harness for open or short between fuel injector and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors.
8.
CHECK FUEL INJECTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check harness continuity between fuel injector terminal 2 and ECM terminals 21, 22, 23, 40, 41, 42.
Refer to Wiring Diagram.
4.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 10.
NG
>> GO TO 9.
9.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors F221, F33
●
Harness for open or short between fuel injector and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
10.
CHECK FUEL INJECTOR
Refer to
EC-658, "Component Inspection"
OK or NG
OK
>> GO TO 11.
NG
>> Replace malfunctioning fuel injector.
11.
CHECK INTERMITTENT INCIDENT
Refer to
EC-151, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
>> INSPECTION END
Continuity should exist.
EC-658
FUEL INJECTOR
Component Inspection
NBS0011R
FUEL INJECTOR
1.
Disconnect fuel injector harness connector.
2.
Check resistance between terminals as shown in the figure.
Removal and Installation
NBS0011S
FUEL INJECTOR
Refer to
EM-38, "FUEL INJECTOR AND FUEL TUBE"
Resistance: 11.1 - 14.5
Ω
[at 10 - 60
°
C (50 - 140
°
F)]
PBIB1727E
FUEL PUMP
EC-659
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EC
FUEL PUMP
PFP:17042
Description
NBS0011T
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 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 DESCRIPTION
A turbine type design fuel pump is used in the fuel tank.
CONSULT-II Reference Value in Data Monitor Mode
NBS0011U
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: ON.
Operates for 1 second.
Engine running or cranking
Operates.
Engine: Stopped
Stops in 1.5 seconds.
Except as shown above
Stops.
PBIB1100E
MONITOR ITEM
CONDITION
SPECIFICATION
FUEL PUMP RLY
●
For 1 second after turning ignition switch ON
●
Engine running or cranking
ON
●
Except above conditions
OFF
EC-660
FUEL PUMP
Wiring Diagram
NBS0011V
TBWM0830E
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