Nissan X-Trail 32. Manual — part 814
P2138 APP SENSOR
EC-385
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
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Component Inspection
INFOID:0000000010775277
1.
CHECK ACCELERATOR PEDAL POSITION SENSOR
1.
Turn ignition switch OFF.
2.
Reconnect all harness connectors disconnected.
3.
Turn ignition switch ON.
4.
Check the voltage between ECM harness connector terminals as per the following condition.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace accelerator pedal assembly. Refer to
ACC-4, "Removal and Installation"
ECM
Condition
Voltage
Connector
+
–
Terminal
E16
126
127
Accelerator pedal
Fully released
0.6 - 0.9 V
Fully depressed
3.9 - 4.7 V
119
120
Fully released
0.3 - 0.6 V
Fully depressed
1.95 - 2.4 V
EC-386
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
FUEL INJECTOR
FUEL INJECTOR
Component Function Check
INFOID:0000000010775278
1.
INSPECTION START
Turn ignition switch to START.
Are any cylinders ignited?
YES
>> GO TO 2.
NO
>> Proceed to
.
2.
CHECK FUEL INJECTOR FUNCTION
With CONSULT
1.
Start engine.
2.
Perform “POWER BALANCE” in “ACTIVE TEST” mode with CONSULT.
3.
Check that each circuit produces a momentary engine speed drop.
Without CONSULT
1.
Start engine and let it idle.
2.
Listen to each fuel injector operating sound.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Proceed to
.
Diagnosis Procedure
INFOID:0000000010775279
1.
CHECK FUEL INJECTOR POWER SUPPLY
1.
Turn ignition switch OFF.
2.
Disconnect fuel injector harness connector.
3.
Turn ignition switch ON.
4.
Check the voltage between fuel injector harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> GO TO 2.
2.
CHECK FUEL INJECTOR POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between fuel injector harness connector and ECM harness connector.
Clicking sound should be heard.
PBIB3332E
+
−
Voltage
Fuel injector
Cylinder
Connector
Terminal
1
F37
1
Ground
Battery voltage
2
F38
1
3
F39
1
4
F40
1
FUEL INJECTOR
EC-387
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
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4.
Also check harness for short to power.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace malfunctioning part.
3.
CHECK FUEL INJECTOR DRIVER POWER SUPPLY
1.
Disconnect ECM harness connector.
2.
Turn ignition switch ON.
3.
Check the continuity between ECM harness connector and ground.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-44, "Intermittent Incident"
.
NO
>> GO TO 4.
4.
CHECK FUEL INJECTOR DRIVER POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Disconnect fuel injector relay harness connector.
4.
Check the continuity between ECM harness connector and fuel injector relay harness connector.
5.
Also check harness for short to power.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace malfunctioning part.
5.
CHECK FUEL INJECTOR RELAY POWER SUPPLY (CONTACT SIDE)
Check the voltage between fuel injector relay harness connector and ground.
+
−
Continuity
Fuel injector
ECM
Cylinder
Connector
Terminal
Connector
Terminal
1
F37
1
F7
1
Existed
2
F38
1
2
3
F39
1
3
4
F40
1
4
+
−
Voltage
ECM
Connector
Terminal
F8
49
Ground
Battery voltage
53
+
−
Continuity
ECM
Fuel injector relay
Connector
Terminal
Connector
Terminal
F8
49
F26
5
Existed
53
7
+
−
Voltage
Fuel injector relay
Connector
Terminal
F26
3
Ground
Battery voltage
6
EC-388
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
FUEL INJECTOR
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Perform trouble diagnosis for power supply circuit.
6.
CHECK FUEL INJECTOR RELAY POWER SUPPLY (EXCITATION COIL SIDE)
1.
Install all removed parts.
2.
Turn ignition switch ON.
3.
Check the voltage between fuel injector relay harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> GO TO 7.
7.
CHECK FUEL INJECTOR RELAY POWER SUPPLY (EXCITATION COIL SIDE)
1.
Turn ignition switch OFF.
2.
Disconnect fuel injector relayharness connector.
3.
Disconnect IPDM E/R harness connector.
4.
Check the continuity between IPDM E/R harness connector and fuel injector relay harness connector.
5.
Also check harness for short to power.
Is the inspection result normal?
YES
>> Perform trouble diagnosis for power supply circuit.
NO
>> Repair or replace malfunctioning part.
8.
CHECK FUEL INJECTOR RELAY GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect fuel injector relay harness connector.
3.
Check the continuity between fuel injector relay harness connector and ground.
4.
Also check harness for short to ground.
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> Repair or replace malfunctioning part.
9.
CHECK FUEL INJECTOR GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check the continuity between fuel injector harness connector and ECM harness connector.
+
−
Voltage
Fuel injector relay
Connector
Terminal
F26
1
Ground
Battery voltage
+
−
Continuity
IPDM E/R
Fuel injector relay
Connector
Terminal
Connector
Terminal
F72
66
F26
1
Existed
+
−
Continuity
Fuel injector relay
Connector
Terminal
F26
2
Ground
Existed
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