2007 INFINITI M35 Factory Service Manual

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Page 2585 of 4647

INFINITI M35 2007 Factory Service Manual EC-1056
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DTC P0222, P0223 TP SENSOR
Revision: 2007 April2007 M35/M45
Wiring DiagramNBS005FZ
TBWT1494E

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INFINITI M35 2007 Factory Service Manual DTC P0222, P0223 TP SENSOR
EC-1057
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Revision: 2007 April2007 M35/M45
Specification data are reference values and are measured between each terminal and ground.
CAUTIO

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INFINITI M35 2007 Factory Service Manual EC-1058
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DTC P0222, P0223 TP SENSOR
Revision: 2007 April2007 M35/M45
2. CHECK THROTTLE POSITION SENSOR 1 POWER SUPPLY CIRCUIT-I
1. Disconnect electric throttle control actuator (1) harness con

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INFINITI M35 2007 Factory Service Manual DTC P0222, P0223 TP SENSOR
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6. REPLACE ACCELERATOR PEDAL ASSEMBLY
1. Replace accelerator pedal assembly.
2. Perform EC-788, "

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INFINITI M35 2007 Factory Service Manual EC-1060
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DTC P0222, P0223 TP SENSOR
Revision: 2007 April2007 M35/M45
Component InspectionNBS005G1
THROTTLE POSITION SENSOR
1. Reconnect all harness connectors disconnected.
2. Perform EC-788,

Page 2590 of 4647

INFINITI M35 2007 Factory Service Manual DTC P0300 - P0308 MULTIPLE CYLINDER MISFIRE, NO. 1 - 8 CYLINDER MIS-
FIRE
EC-1061
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Revision: 2007 April2007 M35/M45
DTC P0300 - P0308 MULTIPLE CYLINDER MISFIRE, NO. 1

DTC P0300 - P0308 MULTIPLE CYLINDER MISFIRE, NO. 1 - 8 CYLINDER MIS-
FIRE
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Revision: 2007 April2007 M35/M45
DTC P0300 - P0308 MULTIPLE CYLINDER MISFIRE, NO. 1 - 8 CYLINDER MIS-
FIRE
PFP:00000
On Board Diagnosis LogicNBS005G3
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 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 ProcedureNBS005G4
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
0300Multiple cylinder misfire 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
Signal plate
A/F sensor 1
Incorrect PCV hose connection P0301
0301No.1 cylinder misfire detected No. 1 cylinder misfires.
P0302
0302No. 2 cylinder misfire detected No. 2 cylinder misfires.
P0303
0303No. 3 cylinder misfire detected No. 3 cylinder misfires.
P0304
0304No. 4 cylinder misfire detected No. 4 cylinder misfires.
P0305
0305No. 5 cylinder misfire detected No. 5 cylinder misfires.
P0306
0306No. 6 cylinder misfire detected No. 6 cylinder misfires.
P0307
0307No. 7 cylinder misfire detected No. 7 cylinder misfires.
P0308
0308No. 8 cylinder misfire detected No. 8 cylinder misfires.

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INFINITI M35 2007 Factory Service Manual EC-1062
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DTC P0300 - P0308 MULTIPLE CYLINDER MISFIRE, NO. 1 - 8 CYLINDER MIS-
FIRE
Revision: 2007 April2007 M35/M45
WITH CONSULT-II
1. Turn ignition switch ON, and select “DATA MONITOR” m

EC-1062
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DTC P0300 - P0308 MULTIPLE CYLINDER MISFIRE, NO. 1 - 8 CYLINDER MIS-
FIRE
Revision: 2007 April2007 M35/M45
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-1062, "
Diagnostic Proce-
dure" .
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 ProcedureNBS005G5
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) conditionWhen 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

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INFINITI M35 2007 Factory Service Manual DTC P0300 - P0308 MULTIPLE CYLINDER MISFIRE, NO. 1 - 8 CYLINDER MIS-
FIRE
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Revision: 2007 April2007 M35/M45
3. PERFORM POWER BALANCE TEST
With CONSULT-II
1.

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