Nissan Almera Tino V10. Manual — part 521
EC-910
[QG (WITHOUT EURO-OBD)]
INJECTOR CIRCUIT
2.
CHECK OVERALL FUNCTION
With CONSULT-II
1.
Start engine.
2.
Perform “POWER BALANCE” in “ACTIVE TEST” mode with
CONSULT-II.
3.
Make sure that each circuit produces a momentary engine
speed drop.
Without CONSULT-II
1.
Start engine.
2.
Listen to each injector operating sound.
Clicking noise should be heard.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 3.
PBIB0133E
MEC703B
INJECTOR CIRCUIT
EC-911
[QG (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
3.
CHECK INJECTOR POWER SUPPLY CIRCUIT
1.
Turn ignition switch “OFF”.
2.
Disconnect injector harness connector.
3.
Turn ignition switch “ON”.
4.
Check voltage between injector terminal 1 and ground with
CONSULT-II or tester.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 4.
4.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors M71, F45
●
Fuse block (J/B) connector M1
●
10A fuse
●
Harness for open or short between injector and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors.
5.
CHECK INJECTOR OUTPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch “OFF”.
2.
Disconnect ECM harness connector.
3.
Check harness continuity between injector terminal 2 and ECM terminals 22, 23, 41, 42.
Refer to Wiring Diagram.
4.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 6.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
6.
CHECK INJECTOR
Refer to
EC-912, "Component Inspection"
.
OK or NG
OK
>> GO TO 7.
NG
>> Replace injector.
MBIB0101E
Voltage: Battery voltage
PBIB0582E
Continuity should exist.
EC-912
[QG (WITHOUT EURO-OBD)]
INJECTOR CIRCUIT
7.
CHECK INTERMITTENT INCIDENT
Refer to
EC-644, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
>> INSPECTION END
Component Inspection
EBS00R3Q
INJECTOR
1.
Disconnect injector harness connector.
2.
Check resistance between terminals as shown in the figure.
Removal and Installation
EBS00R3R
INJECTOR
Refer to
EM-29, "FUEL INJECTOR AND FUEL TUBE"
.
Resistance: 13.5 - 17.5
Ω
[at 20
°
C (68
°
F)]
PBIB0181E
FUEL PUMP CIRCUIT
EC-913
[QG (WITHOUT EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
FUEL PUMP CIRCUIT
PFP:17042
Description
EBS00R3S
SYSTEM DESCRIPTION
*: The 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 crankshaft position sensor (POS) and cam-
shaft 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
EBS00R3T
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
Stops.
MBIB0046E
MONITOR ITEM
CONDITION
SPECIFICATION
FUEL PUMP RLY
●
For 1 seconds after turning ignition switch ON
●
Engine running or cranking
ON
●
Except above conditions
OFF
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст