Nissan Pathfinder (2010 year). Instruction — part 324
EC-684
< COMPONENT DIAGNOSIS >
[VK56DE]
P0222, P0223 TP SENSOR
OK or NG
OK
>> GO TO 5.
NG
>> Repair short to ground or short to power in harness or connectors.
5.
CHECK ACCELERATOR PEDAL POSITION SENSOR
EC-860, "Component Inspection"
OK or NG
OK
>> GO TO 11.
NG
>> GO TO 6.
6.
REPLACE ACCELERATOR PEDAL ASSEMBLY
1. Replace the accelerator pedal assembly.
2. Perform
EC-511, "Accelerator Pedal Released Position Learning"
.
3. Perform
EC-511, "Throttle Valve Closed Position Learning"
4. Perform
EC-511, "Idle Air Volume Learning"
.
>>
INSPECTION END
7.
CHECK THROTTLE POSITION SENSOR 1 GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between electric throttle control actuator terminal 4 and ECM terminal 66.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 8.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
8.
CHECK THROTTLE POSITION SENSOR 1 INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 50 and electric throttle control actuator terminal 1.
Refer to Wiring Diagram.
2. Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 9.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
9.
CHECK THROTTLE POSITION SENSOR
EC-685, "Component Inspection"
OK or NG
OK
>> GO TO 11.
NG
>> GO TO 10.
10.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace the electric throttle control actuator.
2. Perform
EC-511, "Throttle Valve Closed Position Learning"
3. Perform
EC-511, "Idle Air Volume Learning"
.
>>
INSPECTION END
11.
CHECK INTERMITTENT INCIDENT
GI-37, "Intermittent Incident"
Continuity should exist.
Continuity should exist.
2010 Pathfinder
P0222, P0223 TP SENSOR
EC-685
< COMPONENT DIAGNOSIS >
[VK56DE]
C
D
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EC
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>>
INSPECTION END
Component Inspection
INFOID:0000000005257649
THROTTLE POSITION SENSOR
1. Reconnect all harness connectors disconnected.
2. Perform
EC-511, "Throttle Valve Closed Position Learning"
3. Turn ignition switch ON.
4. Shift selector lever to the D position.
5. Check voltage between ECM terminals 50 (TP sensor 1 signal)
and ground, 69 (TP sensor 2 signal) and ground under the fol-
lowing conditions.
6. If NG, replace electric throttle control actuator and go to the next
step.
7. Perform
EC-511, "Throttle Valve Closed Position Learning"
8. Perform
EC-511, "Idle Air Volume Learning"
.
Terminal
Accelerator pedal
Voltage
50
(Throttle position sensor 1)
Fully released
More than 0.36V
Fully depressed
Less than 4.75V
69
(Throttle position sensor 2)
Fully released
Less than 4.75V
Fully depressed
More than 0.36V
PBIB1530E
2010 Pathfinder
EC-686
< COMPONENT DIAGNOSIS >
[VK56DE]
P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 MISFIRE
P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 MIS-
FIRE
On Board Diagnosis Logic
INFOID:0000000005257650
When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the crank-
shaft position (CKP) sensor (POS) signal to vary, ECM can determine that a misfire is occurring.
The misfire detection logic consists of the following two conditions.
1. One Trip Detection Logic (Three Way Catalyst Damage)
On the 1st trip, when a misfire condition occurs that can damage the three way catalyst (TWC) due to
overheating, the MIL will blink.
When a misfire condition occurs, the ECM monitors the CKP sensor signal every 200 engine revolutions
for a change.
When the misfire condition decreases to a level that will not damage the TWC, the MIL will turn off.
If another misfire condition occurs that can damage the TWC on a second trip, the MIL will blink.
When the misfire condition decreases to a level that will not damage the TWC, the MIL will remain on.
If another misfire condition occurs that can damage the TWC, the MIL will begin to blink again.
2. Two Trip Detection Logic (Exhaust quality deterioration)
For misfire conditions that will not damage the TWC (but will affect vehicle emissions), the MIL will only
illuminate when the misfire is detected on a second trip. During this condition, the ECM monitors the CKP
sensor signal every 1,000 engine revolutions.
A misfire malfunction can be detected in any one cylinder or in multiple cylinders.
DTC Confirmation Procedure
INFOID:0000000005257651
CAUTION:
Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws when driv-
ing.
1. If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next step.
a. Turn ignition switch OFF and wait at least 10 seconds.
b. Turn ignition switch ON.
Sensor
Input signal to ECM
ECM function
Crankshaft position sensor (POS)
Engine speed
On board diagnosis of misfire
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0300
0300
Multiple cylinder misfires detected
Multiple cylinder misfire.
• Improper spark plug
• Insufficient compression
• Incorrect fuel pressure
• The fuel injector circuit is open or shorted
• Fuel injector
• Intake air leakage
• The ignition signal circuit is open or shorted
• Lack of fuel
• Signal plate
• Air fuel ratio (A/F) sensor 1
• Incorrect PCV hose connection
P0301
0301
No.1 cylinder misfire detected
No. 1 cylinder misfires.
P0302
0302
No. 2 cylinder misfire detected
No. 2 cylinder misfires.
P0303
0303
No. 3 cylinder misfire detected
No. 3 cylinder misfires.
P0304
0304
No. 4 cylinder misfire detected
No. 4 cylinder misfires.
P0305
0305
No. 5 cylinder misfire detected
No. 5 cylinder misfires.
P0306
0306
No. 6 cylinder misfire detected
No. 6 cylinder misfires.
P0307
0307
No. 7 cylinder misfire detected
No. 7 cylinder misfires.
P0308
0308
No. 8 cylinder misfire detected
No. 8 cylinder misfires.
2010 Pathfinder
P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 MISFIRE
EC-687
< COMPONENT DIAGNOSIS >
[VK56DE]
C
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EC
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c. Turn ignition switch OFF and wait at least 10 seconds.
2. Start engine and warm it up to normal operating temperature.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON.
5. Turn ignition switch OFF and wait at least 10 seconds.
6. Restart engine and let it idle for approximately 15 minutes.
7. Check 1st trip DTC.
8. If 1st trip DTC is detected, go to
NOTE:
If 1st trip DTC is not detected during above procedure, performing the following procedure is advised.
a. Turn ignition switch OFF and wait at least 10 seconds.
b. Turn ignition switch ON.
c. Turn ignition switch OFF and wait at least 10 seconds.
d. Start engine and drive the vehicle under similar conditions to (1st trip) Freeze Frame Data for a certain
time. Refer to the table below.
Hold the accelerator pedal as steady as possible.
Similar conditions to (1st trip) Freeze Frame Data mean that the following conditions should be satisfied at
the same time.
Driving time varies according to the engine speed in the freeze frame data.
Diagnosis Procedure
INFOID:0000000005257652
1.
CHECK FOR INTAKE AIR LEAKAGE AND PCV HOSE
1. Start engine and run it at idle speed.
2. Listen for the sound of the intake air leakage.
3. Check PCV hose connection.
OK or NG
OK
>> GO TO 2.
NG
>> Discover air leakage location and repair.
2.
CHECK FOR EXHAUST SYSTEM CLOGGING
Stop engine and visually check exhaust tube, three way catalyst and muffler for dents.
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace malfunctioning part.
3.
PERFORM POWER BALANCE TEST
With CONSULT-III
1. Perform “POWER BALANCE” in “ACTIVE TEST” mode.
Engine speed
Engine speed in the freeze frame data
±
400 rpm
Vehicle speed
Vehicle speed in the freeze frame data
±
10 km/h (6 MPH)
Engine coolant temperature (T)
condition
When the freeze frame data shows lower than 70
°
C (158
°
F),
T should be lower than 70
°
C (158
°
F).
When the freeze frame data shows higher than or equal to 70
°
C (158
°
F),
T should be higher than or equal to 70
°
C (158
°
F).
Engine speed
Time
Around 1,000 rpm
Approximately 10 minutes
Around 2,000 rpm
Approximately 5 minutes
More than 3,000 rpm
Approximately 3.5 minutes
2010 Pathfinder
EC-688
< COMPONENT DIAGNOSIS >
[VK56DE]
P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 MISFIRE
2. Is there any cylinder which does not produce a momentary engine speed drop?
Without CONSULT-III
When disconnecting each fuel injector harness connector one at a time, is there any cylinder which does not
produce a momentary engine speed drop?
Yes or No
Yes
>> GO TO 4.
No
>> GO TO 7.
4.
CHECK FUEL INJECTOR
Does each fuel injector make an operating sound at idle?
Yes or No
Yes
>> GO TO 5.
No
>> Check fuel injector(s) and circuit(s). Refer to
.
5.
CHECK FUNCTION OF IGNITION COIL-I
CAUTION:
Perform the following procedure in a place with no combustible objects and good ventilation.
1. Turn ignition switch OFF.
2. Remove fuel pump fuse (1) in IPDM E/R (2) to release fuel pres-
sure.
NOTE:
Do not use CONSULT-III to release fuel pressure, or fuel pres-
sure applies again during the following procedure.
3. Start engine.
4. After engine stalls, crank it 2 or 3 times to release all fuel pres-
sure.
5. Turn ignition switch OFF.
6. Remove all ignition coil harness connectors to avoid the electri-
cal discharge from the ignition coils.
7. Remove ignition coil and spark plug of the cylinder to be
checked.
8. Crank engine for 5 seconds or more to remove combustion gas in the cylinder.
9. Connect spark plug and harness connector to ignition coil.
BBIA0374E
PBIB1986E
ALBIA0351ZZ
2010 Pathfinder
P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 MISFIRE
EC-689
< COMPONENT DIAGNOSIS >
[VK56DE]
C
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EC
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10. Fix ignition coil using a rope etc. with gap of 13 - 17 mm
between the edge of the spark plug and grounded metal portion
as shown in the figure.
11. Crank engine for approximately 3 seconds, and check whether
spark is generated between the spark plug and the grounded
metal portion.
CAUTION:
• Never place the spark plug and the ignition coil within 50
cm each other. Be careful not to get an electrical shock
while checking, because the electrical discharge voltage
becomes 20 kV or more.
• It might damage the ignition coil if the gap of more than 17 mm is made.
NOTE:
When the gap is less than 13 mm, spark might be generated even if the coil is malfunctioning.
OK or NG
OK
>> GO TO 9.
NG
>> GO TO 6.
6.
CHECK FUNCTION OF IGNITION COIL-II
1. Turn ignition switch OFF.
2. Disconnect spark plug and connect a non-malfunctioning spark plug.
3. Crank engine for approximately 3 seconds, and recheck whether spark is generated between the spark
plug and the grounded metal portion.
OK or NG
OK
>> GO TO 7.
NG
>> Check ignition coil, power transistor and their circuits. Refer to
.
7.
CHECK SPARK PLUG
Check the initial spark plug for fouling, etc.
OK or NG
OK
>> Replace malfunctioning spark plug(s) with standard type
one(s). For spark plug type, refer to
.
NG
>> 1. Repair or clean spark plug.
2. GO TO 8.
8.
CHECK FUNCTION OF IGNITION COIL-III
1. Reconnect the initial spark plugs.
2. Crank engine for approximately 3 seconds, and recheck whether spark is generated between the spark
plug and the grounded portion.
OK or NG
OK
>>
INSPECTION END
NG
>> Replace malfunctioning spark plug(s) with standard type one(s). For spark plug type, refer to
.
9.
CHECK COMPRESSION PRESSURE
Check compression pressure. Refer to
EM-159, "Compression Pressure"
OK or NG
Spark should be generated.
PBIB2325E
Spark should be generated.
SEF156I
Spark should be generated.
2010 Pathfinder
EC-690
< COMPONENT DIAGNOSIS >
[VK56DE]
P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 MISFIRE
OK
>> GO TO 10.
NG
>> Check pistons, piston rings, valves, valve seats and cylinder head gaskets.
10.
CHECK FUEL PRESSURE
1. Install all removed parts.
2. Release fuel pressure to zero. Refer to
3. Install fuel pressure gauge and check fuel pressure. Refer to
OK or NG
OK
>> GO TO 12.
NG
>> GO TO 11.
11.
DETECT MALFUNCTIONING PART
Check the following.
• Fuel pump and circuit (Refer to
• Fuel pressure regulator (Refer to
• Fuel lines
• Fuel filter for clogging
>> Repair or replace malfunctioning part.
12.
CHECK IGNITION TIMING
Check the following items. Refer to
OK or NG
OK
>> GO TO 13.
NG
>> Follow the
13.
CHECK AIR FUEL RATIO SENSOR 1 INPUT SIGNAL FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect air fuel ratio (A/F) sensor 1 harness connector.
3. Disconnect ECM harness connector.
4. Check harness continuity between A/F sensor 1 terminals and ECM terminals as per the following.
Refer to Wiring Diagram.
At idling: Approximately 350 kPa (3.57 kg/cm
2
, 51 psi)
Items
Specifications
Target idle speed
650
±
50 rpm (in P or N position)
Ignition timing
15
±
5
°
BTDC (in P or N position)
ALBIA0360ZZ
1.
A/F sensor 1 (bank 2) harness connector 2.
A/F sensor 1 (bank 2)
3.
A/F sensor 1 (bank 1)
4.
A/F sensor 1 (bank 1) harness connector
: Vehicle front
2010 Pathfinder
P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 MISFIRE
EC-691
< COMPONENT DIAGNOSIS >
[VK56DE]
C
D
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F
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EC
N
P
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5. Check harness continuity between the following terminals and ground.
Refer to Wiring Diagram.
6. Also check harness for short to power.
OK or NG
OK
>> GO TO 14.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
14.
CHECK A/F SENSOR 1 HEATER
EC-589, "Component Inspection"
OK or NG
OK
>> GO TO 16.
NG
>> GO TO 15.
15.
REPLACE A/F SENSOR 1
Replace malfunctioning A/F sensor 1.
CAUTION:
• Discard any A/F sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a
hard surface such as a concrete floor; use a new one.
• Before installing new A/F sensor, clean exhaust system threads using Oxygen Sensor Thread
Cleaner [Commercial service tool (J-43897-18 or J-43897-12)] and approved Anti-seize Lubricant
(Commercial service tool).
>>
INSPECTION END
16.
CHECK MASS AIR FLOW SENSOR
With CONSULT-III
Check mass air flow sensor signal in “DATA MONITOR” mode with CONSULT-III.
With GST
Check mass air flow sensor signal in Service $01 with GST.
OK or NG
OK
>> GO TO 17.
A/F sensor 1 terminal
ECM terminal
Bank 1
1
35
2
56
Bank 2
1
16
2
75
Continuity should exist.
Bank 1
Bank 2
A/F sensor 1 terminal
ECM terminal
A/F sensor 1 terminal
ECM terminal
1
35
1
16
2
56
2
75
Continuity should not exist.
3.0 - 9.0 g·m/sec:
At idling
9.0 - 28.0 g·m/sec:
At 2,500 rpm
3.0 - 9.0 g·m/sec:
At idling
9.0 - 28.0 g·m/sec:
At 2,500 rpm
2010 Pathfinder
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