Infiniti FX35, FX50 (S51). Manual — part 679
P0222, P0223, P2132, P2133 TP SENSOR
EC-257
< DTC/CIRCUIT DIAGNOSIS >
[VQ35HR]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> GO TO 6.
6.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1.
Replace malfunctioning electric throttle control actuator.
2.
Go to
EC-257, "Special Repair Requirement"
.
>> INSPECTION END
7.
CHECK INTERMITTENT INCIDENT
GI-36, "Intermittent Incident"
.
>> INSPECTION END
Component Inspection
INFOID:0000000005236857
1.
CHECK THROTTLE POSITION (TP) SENSOR
1.
Turn ignition switch OFF.
2.
Reconnect all harness connectors disconnected.
3.
EC-25, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"
.
4.
Turn ignition switch ON.
5.
Set selector lever position to D.
6.
Check the voltage between ECM harness connector terminals under the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1.
Replace malfunctioning electric throttle control actuator.
2.
Go to
EC-257, "Special Repair Requirement"
.
>> INSPECTION END
Special Repair Requirement
INFOID:0000000005236858
1.
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
EC-25, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"
>> GO TO 2.
2.
PERFORM IDLE AIR VOLUME LEARNING
ECM
Condition
Voltage (V)
Connector
+
–
Terminal
Terminal
F101
30
[TP sensor 1 (bank 1)]
40
Accelerator pedal: Fully released
More than 0.36
Accelerator pedal: Fully depressed
Less than 4.75
31
[TP sensor 1 (bank 2)]
48
Accelerator pedal: Fully released
More than 0.36
Accelerator pedal: Fully depressed
Less than 4.75
34
[TP sensor 2 (bank 1)]
40
Accelerator pedal: Fully released
Less than 4.75
Accelerator pedal: Fully depressed
More than 0.36
35
[TP sensor 2 (bank 2)]
48
Accelerator pedal: Fully released
Less than 4.75
Accelerator pedal: Fully depressed
More than 0.36
EC-258
< DTC/CIRCUIT DIAGNOSIS >
[VQ35HR]
P0222, P0223, P2132, P2133 TP SENSOR
EC-25, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"
>> END
P0300, P0301, P0302, P0303, P0304, P0305, P0306 MISFIRE
EC-259
< DTC/CIRCUIT DIAGNOSIS >
[VQ35HR]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
P0300, P0301, P0302, P0303, P0304, P0305, P0306 MISFIRE
DTC Logic
INFOID:0000000005236859
DTC DETECTION LOGIC
When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the crank-
shaft position (CKP) sensor 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 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 in any one cylinder or in multiple cylinders.
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
1.
Turn ignition switch OFF and wait at least 10 seconds.
2.
Turn ignition switch ON.
3.
Turn ignition switch OFF and wait at least 10 seconds.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE-I
1.
Start engine and warm it up to normal operating temperature.
2.
Turn ignition switch OFF and wait at least 10 seconds.
3.
Turn ignition switch ON.
4.
Turn ignition switch OFF and wait at least 10 seconds.
5.
Restart engine and let it idle for approximately 15 minutes.
6.
Check 1st trip DTC.
Sensor
Input signal to ECM
ECM function
CKP sensor
Engine speed
On board diagnosis of misfire
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0300
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 short-
ed
• Lack of fuel
• Signal plate
• Air fuel ratio (A/F) sensor 1
• Incorrect PCV hose connection
P0301
No.1 cylinder misfire detected
No. 1 cylinder misfires.
P0302
No. 2 cylinder misfire detected
No. 2 cylinder misfires.
P0303
No. 3 cylinder misfire detected
No. 3 cylinder misfires.
P0304
No. 4 cylinder misfire detected
No. 4 cylinder misfires.
P0305
No. 5 cylinder misfire detected
No. 5 cylinder misfires.
P0306
No. 6 cylinder misfire detected
No. 6 cylinder misfires.
EC-260
< DTC/CIRCUIT DIAGNOSIS >
[VQ35HR]
P0300, P0301, P0302, P0303, P0304, P0305, P0306 MISFIRE
Is 1st trip DTC detected?
YES
>> Go to
NO
>> GO TO 3.
3.
PERFORM DTC CONFIRMATION PROCEDURE-II
1.
Turn ignition switch OFF and wait at least 10 seconds.
2.
Turn ignition switch ON.
3.
Turn ignition switch OFF and wait at least 10 seconds.
4.
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.
CAUTION:
Always drive vehicle in safe manner according to traffic conditions and obey all traffic laws when
driving.
Driving time varies according to the engine speed in the freeze frame data.
5.
Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000005236860
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.
Is intake air leak detected?
YES
>> Discover air leak location and repair.
NO
>> GO TO 2.
2.
CHECK FOR EXHAUST SYSTEM CLOGGING
Stop engine and visually check exhaust tube, three way catalyst and muffler for dents.
Is the inspection result normal?
YES-1 >> With CONSULT-III: GO TO 3.
YES-2 >> Without CONSULT-III: GO TO 4.
NO
>> Repair or replace malfunctioning part.
3.
PERFORM POWER BALANCE TEST
With CONSULT-III
1.
Start engine.
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)
Basic fuel schedule
Basic fuel schedule in freeze frame data
×
(1
±
0.1)
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
Approx. 10 minutes
Around 2,000 rpm
Approx. 5 minutes
More than 3,000 rpm
Approx. 3.5 minutes
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