Nissan X-Trail 32. Manual — part 817
HIGH PRESSURE FUEL PUMP
EC-397
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
10.
CHECK HIGH PRESSURE FUEL PUMP INSTALLATION
1.
Turn ignition switch OFF.
2.
Check high pressure fuel pump for improper attachment or looseness.
Is the inspection result normal?
YES
>> GO TO 11.
NO
>> Repair or replace malfunctioning part.
11.
CHECK CAMSHAFT
1.
Remove camshaft. Refer to
EM-81, "Removal and Installation"
2.
Check camshaft. Refer to
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-44, "Intermittent Incident"
.
NO
>> Replace camshaft. Refer to
EM-81, "Removal and Installation"
.
Component Inspection (High Pressure Fuel Pump)
INFOID:0000000010775287
1.
CHECK HIGH PRESSURE FUEL PUMP-1
1.
Turn ignition switch OFF.
2.
Disconnect high pressure fuel pump harness connector.
3.
check the resistance between high pressure fuel pump terminals as per the following conditions.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace high pressure fuel pump. Refer to
.
2.
CHECK HIGH PRESSURE FUEL PUMP-2
With CONSULT
1.
Reconnect high pressure fuel pump harness connector.
2.
Start engine.
3.
Select “FUEL PRES SEN V” in “DATA MONITOR” mode of “ENGINE” using CONSULT and check the
indication as per the following conditions.
Without CONSULT
1.
Start engine.
2.
Check fuel rail pressure sensor signal voltage.
High pressure fuel pump
Condition
Resistance
+
−
Terminal
1
2
Temperature [
°
C (
°
F)]
20 - 30 (68 - 86)
0.46 - 0.51
Ω
Monitor item
Condition
Indication
FUEL PRES SEN V
At idle
820 - 1,140 mV
Revving engine up to 4,000 rpm quickly.
820 - 2,900 mV
ECM
Condition
Voltage
(Approx.)
Connector
+
−
Terminal
F7
33
39
[Engine is running]
• Warm-up condition
• Idle speed
0.82 – 1.14 V
[Engine is running]
• Warm-up condition
• Engine speed: Revving engine from idle to 4,000 rpm
0.82 – 2.9 V
EC-398
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
HIGH PRESSURE FUEL PUMP
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace high pressure fuel pump. Refer to
.
Component Inspection (High Pressure Fuel Pump Relay)
INFOID:0000000010775288
1.
CHECK HIGH PRESSURE FUEL PUMP RELAY
1.
Turn ignition switch OFF.
2.
Remove high pressure fuel pump relay. Refer to
EC-28, "ENGINE CONTROL SYSTEM : Component
3.
Check the continuity between high pressure fuel pump relay ter-
minals.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace high pressure fuel pump relay. Refer to
EC-28, "ENGINE CONTROL SYSTEM : Compo-
+
−
Condition
Continuity
High pressure fuel
pump relay
Terminal
3
5
12 V direct current supply between
terminals 1 and 2
Existed
No current supply
Not existed
PBIB0098E
IGNITION SIGNAL
EC-399
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
C
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EC
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IGNITION SIGNAL
Component Function Check
INFOID:0000000010775289
1.
INSPECTION START
Turn ignition switch OFF, and restart engine.
Does the engine start?
YES-1 >> With CONSULT: GO TO 2.
YES-2 >> Without CONSULT: GO TO 3.
NO
>> Proceed to
.
2.
CHECK IGNITION SIGNAL FUNCTION-1
With CONSULT
1.
Perform “POWER BALANCE” in “ACTIVE TEST” mode of “ENGINE” with CONSULT.
2.
Check that each circuit produces a momentary engine speed drop.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Proceed to
.
3.
CHECK IGNITION SIGNAL FUNCTION-2
Without CONSULT
1.
Let engine idle.
2.
Read the voltage signal between ECM harness connector terminals with an oscilloscope.
NOTE:
The pulse cycle changes depending on rpm at idle.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Proceed to
.
Diagnosis Procedure
INFOID:0000000010775290
1.
CHECK CONDENSER POWER SUPPLY
1.
Turn ignition switch OFF.
2.
Disconnect condenser harness connector.
3.
Turn ignition switch ON.
4.
Check the voltage between condenser harness connector and ground.
Is the inspection result normal?
ECM
Voltage signal
+
−
Connector
Terminal
Connector
Terminal
F8
78
E16
128
82
86
90
JPBIA4733ZZ
+
−
Voltage
Condenser
Connector
Terminal
F213
1
Ground
Battery voltage
EC-400
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
IGNITION SIGNAL
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
CHECK CONDENSER POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect IPDM E/R harness connector.
3.
Check the continuity between IPDM E/R harness connector and condenser harness connector.
4.
Also check harness for short to ground and to power.
Is the inspection result normal?
YES
>> Perform trouble diagnosis for power supply circuit.
NO
>> Repair or replace malfunctioning part.
3.
CHECK CONDENSER GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Check the continuity between condenser harness connector and ground.
3.
Also check harness for short to power.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace malfunctioning part.
4.
CHECK CONDENSER
Check condenser. Refer to
EC-207, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace condenser.
5.
CHECK IGNITION COIL POWER SUPPLY
1.
Reconnect all harness connectors disconnected.
2.
Disconnect ignition coil harness connector.
3.
Turn ignition switch ON.
4.
Check the voltage between ignition coil harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace malfunctioning part.
+
−
Continuity
IPDM E/R
Condenser
Connector
Terminal
Connector
Terminal
F72
66
F213
1
Existed
+
−
Continuity
Condenser
Connector
Terminal
F213
2
Ground
Existed
+
−
Voltage
Ignition coil
Cylinder
Connector
Terminal
1
F33
3
Ground
Battery voltage
2
F34
3
3
F35
3
4
F36
3
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