2008 INFINITI FX35 Service Manual

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Page 2249 of 3924

INFINITI FX35 2008 Service Manual
DTC P0643 SENSOR POWER SUPPLYEC-1009
< SERVICE INFORMATION > [VK45DE]
C
D
E
F
G H
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M A
EC
NP
O
DTC P0643 SENSOR POWER SUPPLY
On Board Diagnosis LogicINFOID:0000000001326868
This self-diagnosis

Page 2250 of 3924

INFINITI FX35 2008 Service Manual
EC-1010
< SERVICE INFORMATION >[VK45DE]
DTC P0643 SENSOR POWER SUPPLY
Wiring Diagram
INFOID:0000000001326870
Specification data are reference values and are measured between each terminal and ground.

Page 2251 of 3924

INFINITI FX35 2008 Service Manual
DTC P0643 SENSOR POWER SUPPLYEC-1011
< SERVICE INFORMATION > [VK45DE]
C
D
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M A
EC
NP
O
Diagnosis ProcedureINFOID:0000000001326871
1.CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF

Page 2252 of 3924

INFINITI FX35 2008 Service Manual
EC-1012
< SERVICE INFORMATION >[VK45DE]
DTC P0643 SENSOR POWER SUPPLY
2.CHECK ACCELERATOR PEDAL POSITION
SENSOR 1 POWER SUPPLY CIRCUIT
1. Disconnect accelerator pedal position (APP) sensor harness c

Page 2253 of 3924

INFINITI FX35 2008 Service Manual
DTC P0643 SENSOR POWER SUPPLYEC-1013
< SERVICE INFORMATION > [VK45DE]
C
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NP
O
3. Perform
EC-663, "Throttle Valve Closed Position Learning".
4. Perform EC-663, "
Idle Air Vol

Page 2254 of 3924

INFINITI FX35 2008 Service Manual
EC-1014
< SERVICE INFORMATION >[VK45DE]
DTC P0850 PNP SWITCH
DTC P0850 PNP SWITCH
Component DescriptionINFOID:0000000001326872
When the selector lever position is P or N,
park/neutral position (PNP)

EC-1014
< SERVICE INFORMATION >[VK45DE]
DTC P0850 PNP SWITCH
DTC P0850 PNP SWITCH
Component DescriptionINFOID:0000000001326872
When the selector lever position is P or N,
park/neutral position (PNP) switch is ON.
ECM detects the position because the conti nuity of the line (the ON signal) exists.
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000001326873
Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000001326874
DTC Confirmation ProcedureINFOID:0000000001326875
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If DTC Confirmation Procedure has been previously conduc ted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
WITH CONSULT-III
1. Turn ignition switch ON.
2. Select “P/N POSI SW” in “DATA MONITOR” mode wit h CONSULT-III. Then check the “P/N POSI SW” sig-
nal under the following conditions.
If NG, go to EC-1017, "
Diagnosis Procedure".
If OK, go to following step.
3. Start engine and warm it up to normal operating temperature.
4. Maintain the following conditions for at least 60 consecutive seconds.
5. Check 1st trip DTC.
6. If 1st trip DTC is detected, go to EC-1017, "
Diagnosis Procedure".
MONITOR ITEM CONDITION SPECIFICATION
P/N POSI SW Ignition switch: ON Selector lever: P or N ON
Selector lever: Except above OFF
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0850
0850 Park/neutral position
switch The signal of the park/neutral position (PNP)
switch is not changed in the process of engine
starting and driving. Harness or connectors
[The park/neutral position (PNP) switch
circuit is open or shorted.]
Park/neutral position (PNP) switch
Unified meter and A/C amp.
TCM
Position (Selector lever) Known-good signal
N or P position ON
Except above position OFF
ENG SPEED 1,200 - 6,375 rpm
COOLAN TEMP/S More than 70 °C (158 °F)
B/FUEL SCHDL 2.0 - 31.8 msec
VHCL SPEED SE More than 64 km/h (40 MPH)
Selector lever Suitable position
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

Page 2255 of 3924

INFINITI FX35 2008 Service Manual
DTC P0850 PNP SWITCHEC-1015
< SERVICE INFORMATION > [VK45DE]
C
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EC
NP
O
Overall Function CheckINFOID:0000000001326876
Use this procedure to check the overall function of the
par

Page 2256 of 3924

INFINITI FX35 2008 Service Manual
EC-1016
< SERVICE INFORMATION >[VK45DE]
DTC P0850 PNP SWITCH
Wiring Diagram
INFOID:0000000001326877
Specification data are reference values and are measured between each terminal and ground.
CAUTION:

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