Nissan Pathfinder (2006 year). Manual — part 203
DTC P0643 SENSOR POWER SUPPLY
EC-483
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EC
2006 Pathfinder
3.
CHECK APP SENSOR 1 POWER SUPPLY CIRCUIT-II
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check harness continuity between APP sensor terminal 2 and ECM terminal 90.
Refer to Wiring Diagram.
OK or NG
OK
>> GO TO 4.
NG
>> Repair open circuit.
4.
CHECK SENSOR POWER SUPPLY CIRCUITS
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 COMPONENTS
Check the following.
●
EVAP control system pressure sensor (Refer to
EC-424, "Component Inspection"
●
Refrigerant pressure sensor (Refer to
●
Battery current sensor (Refer to
EC-512, "Component Inspection"
.)
●
Power steering pressure sensor (Refer to
EC-471, "Component Inspection"
OK or NG
OK
>> GO TO 8.
NG
>> Replace malfunctioning component.
6.
CHECK APP SENSOR
Refer to
EC-587, "Component Inspection"
OK or NG
OK
>> GO TO 8.
NG
>> GO TO 7.
7.
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
Continuity should exist.
ECM terminal
Sensor terminal
Reference Wiring Diagram
90
APP sensor terminal 2
48
EVAP control system pressure sensor terminal 3
49
Refrigerant pressure sensor terminal 3
Battery current sensor terminal 1
68
PSP sensor terminal 3
EC-484
DTC P0643 SENSOR POWER SUPPLY
2006 Pathfinder
8.
CHECK INTERMITTENT INCIDENT
EC-144, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
>> INSPECTION END
DTC P0850 PNP SWITCH
EC-485
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2006 Pathfinder
DTC P0850 PNP SWITCH
PFP:23006
Component Description
UBS00KGD
When the selector lever position is P or N, park/neutral position (PNP) switch is ON.
ECM detects the position because the continuity of the line (the ON signal) exists.
CONSULT-II Reference Value in Data Monitor Mode
UBS00KGE
Specification data are reference values.
On Board Diagnosis Logic
UBS00KGF
DTC Confirmation Procedure
UBS00KGG
CAUTION:
Always drive vehicle at a safe speed.
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-II
1.
Turn ignition switch ON.
2.
Select “P/N POSI SW” in “DATA MONITOR” mode with CON-
SULT-II. Then check the “P/N POSI SW” signal under the follow-
ing conditions.
If NG, go to
EC-488, "Diagnostic Procedure"
If OK, go to following step.
3.
Select “DATA MONITOR” mode with CONSULT-II.
4.
Start engine and warm it up to normal operating temperature.
5.
Maintain the following conditions for at least 60 consecutive sec-
onds.
6.
If 1st trip DTC is detected, go to
EC-488, "Diagnostic Procedure"
.
MONITOR ITEM
CONDITION
SPECIFICATION
P/N POSI SW
●
Ignition switch: ON
Shift lever: P or N
ON
Shift 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
●
Combination meter
●
TCM
Position (Selector lever)
Known-good signal
P or N position
ON
Except above position
OFF
ENG SPEED
1,400 - 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
SEF212Y
SEF213Y
EC-486
DTC P0850 PNP SWITCH
2006 Pathfinder
Overall Function Check
UBS00KGH
Use this procedure to check the overall function of the park/neutral position (PNP) switch circuit. During this
check, a 1st trip DTC might not be confirmed.
WITH GST
1.
Turn ignition switch ON.
2.
Check voltage between ECM terminal 102 (PNP switch signal)
and ground under the following conditions.
3.
If NG, go to
EC-488, "Diagnostic Procedure"
.
Condition (Gear position)
Voltage V (Known-good data)
P or N position
Approx. 0
Except above position
BATTERY VOLTAGE
(11 - 14V)
MBIB0043E
DTC P0850 PNP SWITCH
EC-487
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2006 Pathfinder
Wiring Diagram
UBS00KGI
BBWA2374E
EC-488
DTC P0850 PNP SWITCH
2006 Pathfinder
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic Procedure
UBS00KGJ
1.
CHECK DTC WITH TCM
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace.
2.
CHECK STARTING SYSTEM
Turn ignition switch OFF, then turn it to START.
Does starter motor operate?
Yes or No
Yes
>> GO TO 3.
No
>> Refer to
3.
CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-I
1.
Turn ignition switch OFF.
2.
Disconnect A/T assembly harness connector.
3.
Disconnect combination meter harness connector.
4.
Check harness continuity between A/T assembly terminal 9 and combination meter terminal 17.
Refer to Wiring Diagram.
5.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 4.
4.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors M31, E152
●
Harness connectors E5, F14
●
Harness for open or short between A/T assembly and combination meter.
>> Repair open circuit or short to ground or short to power in harness or connectors.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
102
G
PNP switch
[Ignition switch: ON]
●
Shift lever: P or N
Approximately 0V
[Ignition switch: ON]
●
Except above position
BATTERY VOLTAGE
(11 - 14V)
Continuity should exist.
DTC P0850 PNP SWITCH
EC-489
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2006 Pathfinder
5.
CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-II
1.
Disconnect ECM harness connector.
2.
Check harness continuity between ECM terminal 102 and combination meter terminal 7.
Refer to Wiring Diagram.
3.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 7.
NG
>> GO TO 6.
6.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors E152, M31
●
Harness for open or short between ECM and combination meter
>> Repair open circuit or short to ground or short to power in harness or connectors.
7.
CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT-III
1.
Check harness continuity between A/T assembly terminal 9 and TCM terminal 8.
Refer to
AT-106, "DTC P0615 START SIGNAL CIRCUIT"
2.
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 INTERMITTENT INCIDENT
Refer to
EC-144, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
OK or NG
OK
>> GO TO 9.
NG
>> Repair or replace.
9.
REPLACE COMBINATION METER
Refer to
.
>> INSPECTION END
Continuity should exist.
Continuity should exist.
EC-490
DTC P1148, P1168 CLOSED LOOP CONTROL
2006 Pathfinder
DTC P1148, P1168 CLOSED LOOP CONTROL
PFP:22690
On Board Diagnosis Logic
UBS00KD7
These self-diagnoses have the one trip detection logic.
DTC P1148 or P1168 is displayed with another DTC for air fuel ratio (A/F) sensor 1.
Perform the trouble diagnosis for the corresponding DTC.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P1148
1148
(Bank 1)
Closed loop control
function
The closed loop control function for bank 1
does not operate even when vehicle is driving
in the specified condition.
●
Harness or connectors
[The air fuel ratio (A/F) sensor 1 circuit is
open or shorted.]
●
Air fuel ratio (A/F) sensor 1
●
Air fuel ratio (A/F) sensor 1 heater
P1168
1168
(Bank 2)
The closed loop control function for bank 2
does not operate even when vehicle is driving
in the specified condition.
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