Nissan Frontier D40. Instruction — part 374
P0222, P0223 TP SENSOR
EC-187
< COMPONENT DIAGNOSIS >
[QR25DE]
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>> INSPECTION END
Component Inspection
INFOID:0000000005273181
THROTTLE POSITION SENSOR
1.
Reconnect all harness connectors disconnected.
2.
EC-24, "Throttle Valve Closed Position Learning"
.
3.
Turn ignition switch ON.
4.
Set shift lever to D (A/T) or 1st (M/T) 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.
EC-24, "Throttle Valve Closed Position Learning"
.
8.
EC-24, "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
PBIB1060E
EC-188
< COMPONENT DIAGNOSIS >
[QR25DE]
P0300, P0301, P0302, P0303, P0304 MISFIRE
P0300, P0301, P0302, P0303, P0304 MISFIRE
On Board Diagnosis Logic
INFOID:0000000005273182
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 (POS) signal every 200 engine revo-
lutions 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 in any one cylinder or in multiple cylinders.
DTC Confirmation Procedure
INFOID:0000000005273183
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.
WITH CONSULT-III
1.
Start engine and warm it up to normal operating temperature.
2.
Turn ignition switch OFF and wait at least 10 seconds.
3.
Restart engine and let it idle for about 15 minutes.
4.
Check 1st trip DTC.
5.
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.
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 leak
• The ignition signal circuit is open or shorted
• Lack of fuel
• Drive plate or flywheel
• 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.
P0300, P0301, P0302, P0303, P0304 MISFIRE
EC-189
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b.
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.
WITH GST
Follow the procedure “WITH CONSULT-III” above.
Diagnosis Procedure
INFOID:0000000005273184
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
>> GO TO 3.
NG
>> Repair or replace it.
3.
PERFORM POWER BALANCE TEST
With CONSULT-III
1.
Perform “POWER BALANCE” in “ACTIVE TEST” mode.
2.
Is there any cylinder which does not produce a momentary engine speed drop?
Without CONSULT-III
Engine speed
Engine speed in the freeze frame data
±
400 rpm
Vehicle speed
Vehicle speed in the feaze 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-190
< COMPONENT DIAGNOSIS >
[QR25DE]
P0300, P0301, P0302, P0303, P0304 MISFIRE
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 9.
4.
CHECK FUNCTION OF 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).
5.
CHECK FUNCTION OF IGNITION COIL-I
CAUTION:
Never the following procedure in a place with no combusyible objects and good ventilation.
1.
Turn ignition switch OFF.
2.
Remove fuel pump fuse in IPDM E/R to release fuel pressure.
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 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 5 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:
BBIA0604E
PBIB1986E
Spark should be generated.
BBIA0534E
PBIB2325E
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