Nissan Pathfinder (2007 year). Manual — part 184
DTC P0222, P0223 TP SENSOR
EC-339
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2007 Pathfinder
2.
CHECK THROTTLE POSITION SENSOR 1 POWER SUPPLY CIRCUIT-I
1.
Disconnect electric throttle control actuator harness connector.
2.
Turn ignition switch ON.
3.
Check voltage between electric throttle control actuator terminal
2 and ground with CONSULT-II or tester.
OK or NG
OK
>> GO TO 7.
NG
>> GO TO 3.
3.
CHECK THROTTLE POSITION SENSOR 1 POWER SUPPLY CIRCUIT-II
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check harness continuity between electric throttle control actuator terminal 2 and ECM terminal 47.
Refer to Wiring Diagram.
OK or NG
OK
>> GO TO 4.
NG
>> Repair open circuit.
4.
CHECK THROTTLE POSITION SENSOR 1 POWER SUPPLY CIRCUIT-III
Check harness for short to power and short to ground, between the following terminals.
OK or NG
OK
>> GO TO 5.
NG
>> Repair short to ground or short to power in harness or connectors.
5.
CHECK APP SENSOR
Refer to
EC-591, "Component Inspection"
OK or NG
OK
>> GO TO 11.
NG
>> GO TO 6.
BBIA0543E
Voltage: Approximately 5V
PBIB2604E
Continuity should exist.
ECM terminal
Sensor terminal
Reference Wiring Diagram
47
Electric throttle control actuator terminal 2
91
APP sensor terminal 1
EC-340
DTC P0222, P0223 TP SENSOR
2007 Pathfinder
6.
REPLACE ACCELERATOR PEDAL ASSEMBLY
1.
Replace accelerator pedal assembly.
2.
Perform
EC-77, "Accelerator Pedal Released Position Learning"
3.
Perform
EC-77, "Throttle Valve Closed Position Learning"
.
4.
Perform
EC-77, "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
Refer to
EC-341, "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-77, "Throttle Valve Closed Position Learning"
.
3.
Perform
EC-77, "Idle Air Volume Learning"
>> INSPECTION END
11.
CHECK INTERMITTENT INCIDENT
Refer to
EC-145, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
>> INSPECTION END
Continuity should exist.
Continuity should exist.
DTC P0222, P0223 TP SENSOR
EC-341
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2007 Pathfinder
Component Inspection
UBS00K82
THROTTLE POSITION SENSOR
1.
Reconnect all harness connectors disconnected.
2.
Perform
EC-77, "Throttle Valve Closed Position Learning"
.
3.
Turn ignition switch ON.
4.
Set selector lever to D position.
5.
Check voltage between ECM terminals 50 (TP sensor 1 signal),
69 (TP sensor 2 signal) and ground under the following condi-
tions.
6.
If NG, replace electric throttle control actuator and go to the next
step.
7.
Perform
EC-77, "Throttle Valve Closed Position Learning"
.
8.
Perform
EC-77, "Idle Air Volume Learning"
.
Removal and Installation
UBS00K83
ELECTRIC THROTTLE CONTROL ACTUATOR
Refer to
EM-17, "INTAKE MANIFOLD COLLECTOR"
.
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
PBIB1608E
EC-342
DTC P0300 - P0306 MULTIPLE CYLINDER MISFIRE, NO. 1 - 6 CYLINDER MIS-
FIRE
2007 Pathfinder
DTC P0300 - P0306 MULTIPLE CYLINDER MISFIRE, NO. 1 - 6 CYLINDER MIS-
FIRE
PFP:00000
On Board Diagnosis Logic
UBS00K84
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 first trip that a misfire condition occurs that can damage the three way catalyst (TWC) due to over-
heating, 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
light when the misfire is detected on a second trip. During this condition, the ECM monitors the CKP sen-
sor signal every 1,000 engine revolutions.
A misfire malfunction can be detected on any one cylinder or on multiple cylinders.
DTC Confirmation Procedure
UBS00K85
CAUTION:
Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws when driv-
ing.
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
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 misfire
detected
Multiple cylinder misfire.
●
Improper spark plug
●
Insufficient compression
●
Incorrect fuel pressure
●
The fuel injector is open or shorted
●
Fuel injector
●
Intake air leak
●
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.
DTC P0300 - P0306 MULTIPLE CYLINDER MISFIRE, NO. 1 - 6 CYLINDER MIS-
FIRE
EC-343
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2007 Pathfinder
WITH CONSULT-II
1.
Turn ignition switch ON, and select “DATA MONITOR” mode
with CONSULT-II.
2.
Start engine and warm it up to normal operating temperature.
3.
Turn ignition switch OFF and wait at least 10 seconds.
4.
Restart engine and let it idle for about 15 minutes.
5.
If 1st trip DTC is detected, go to
EC-343, "Diagnostic Procedure"
.
NOTE:
If 1st trip DTC is not detected during above procedure, perform-
ing the following procedure is advised.
a.
Turn ignition switch OFF and wait at least 10 seconds.
b.
Start engine and drive the vehicle under the 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.
The similar conditions to (1st trip) Freeze Frame Data means the vehicle operation that the following con-
ditions should be satisfied at the same time.
The time to driving varies according to the engine speed in the freeze frame data.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
Diagnostic Procedure
UBS00K86
1.
CHECK FOR INTAKE AIR LEAK AND PCV HOSE
1.
Start engine and run it at idle speed.
2.
Listen for the sound of the intake air leak.
3.
Check PCV hose connection.
OK or NG
OK
>> GO TO 2.
NG
>> Discover air leak 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 (With CONSULT-II)>>GO TO 3.
OK (Without CONSULT-II)>>GO TO 4.
NG
>> Repair or replace it.
PBIB0164E
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
EC-344
DTC P0300 - P0306 MULTIPLE CYLINDER MISFIRE, NO. 1 - 6 CYLINDER MIS-
FIRE
2007 Pathfinder
3.
PERFORM POWER BALANCE TEST
With CONSULT-II
1.
Perform “POWER BALANCE” in “ACTIVE TEST” mode.
2.
Is there any cylinder which does not produce a momentary
engine speed drop?
Yes or No
Yes
>> GO TO 4.
No
>> GO TO 10.
4.
CHECK FUNCTION OF FUEL INJECTOR-I
Stop engine.
1.
Disconnect harness connector F44, F101.
2.
Turn ignition switch ON.
3.
Check voltage between harness connector F44 terminal 3 and
ground with CONSULT-II or tester.
4.
Turn ignition switch OFF.
5.
Disconnect ECM harness connector.
6.
Check harness continuity between harness connector F44 and
ECM as follows.
Refer to Wiring Diagram.
7.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 5.
NG
>> Perform trouble diagnosis for FUEL INJECTOR, refer to
.
PBIB0133E
BBIA0587E
Voltage: Battery voltage
Cylinder
Harness connector F44
terminal
ECM terminal
1
2
23
3
1
22
5
4
21
Continuity should exist.
PBIB2633E
DTC P0300 - P0306 MULTIPLE CYLINDER MISFIRE, NO. 1 - 6 CYLINDER MIS-
FIRE
EC-345
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2007 Pathfinder
5.
CHECK FUNCTION OF FUEL INJECTOR-II
Provide battery voltage between harness connector F101 as follows
and then interrupt it. Listen to each fuel injector operating sound.
OK or NG
OK
>> GO TO 6.
NG
>> Perform trouble diagnosis for FUEL INJECTOR, refer to
6.
CHECK FUNCTION OF FUEL INJECTOR-III
1.
Reconnect all harness connector disconnected.
2.
Start engine.
3.
Listen to fuel injectors No. 2, No. 4, No.6 operating sound.
OK or NG
OK
>> GO TO 7.
NG
>> Perform trouble diagnosis for FUEL INJECTOR, refer to
Cylinder
Harness connector F101 terminal
(+)
(–)
1
3
2
3
3
1
5
3
4
Operating sound should exist.
PBIB2634E
Clicking noise should exist.
PBIB1986E
EC-346
DTC P0300 - P0306 MULTIPLE CYLINDER MISFIRE, NO. 1 - 6 CYLINDER MIS-
FIRE
2007 Pathfinder
7.
CHECK FUNCTION OF IGNITION COIL-I
CAUTION:
Do the following procedure in the place where ventilation is good without the combustible.
1.
Turn ignition switch OFF.
2.
Remove fuel pump fuse in IPDM E/R to release fuel pressure.
NOTE:
Do not use CONSULT-II to release fuel pressure, or fuel pres-
sure applies again during the following procedure.
3.
Start engine.
4.
After engine stalls, crank it two or three times to release all fuel
pressure.
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 five seconds or more to remove combustion gas in the cylinder.
9.
Connect spark plug and harness connector to ignition coil.
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 about three seconds, and check whether spark
is generated between the spark plug and the grounded metal
portion.
CAUTION:
●
Do not approach to the spark plug and the ignition coil
within 50cm. Be careful not to get an electrical shock
while checking, because the electrical discharge voltage
becomes 20kV or more.
●
It might cause to damage the ignition coil if the gap of more than 17 mm is taken.
NOTE:
When the gap is less than 13 mm, the spark might be generated even if the coil is malfunctioning.
OK or NG
OK
>> GO TO 11.
NG
>> GO TO 8.
8.
CHECK FUNCTION OF IGNITION COIL-II
1.
Turn ignition switch OFF.
2.
Disconnect spark plug and connect a known-good spark plug.
3.
Crank engine for about three seconds, and recheck whether spark is generated between the spark plug
and the grounded metal portion.
OK or NG
OK
>> GO TO 9.
NG
>> Check ignition coil, power transistor and their circuits. Refer to
Spark should be generated.
BBIA0534E
PBIB2325E
Spark should be generated.
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