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P0643 SENSOR POWER SUPPLYEC-363
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Wiring DiagramINFOID:0000000005930033
Diagnosis ProcedureINFOID:0000000005930034
1.CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
2. Check ground connections E15, E24. Refer to EC-127, "
Ground Inspection".
Is the inspection result normal?
BBWA2649E
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![NISSAN LATIO 2011 Service Repair Manual EC-364
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P0643 SENSOR POWER SUPPLY
YES >> GO TO 2.
NO >> Repair or replace ground connection.
2.CHECK ACCELERATOR PEDAL POSITION
SENSOR 1 POWER SUPPLY CIRCUIT
1. Disconn NISSAN LATIO 2011 Service Repair Manual EC-364
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P0643 SENSOR POWER SUPPLY
YES >> GO TO 2.
NO >> Repair or replace ground connection.
2.CHECK ACCELERATOR PEDAL POSITION
SENSOR 1 POWER SUPPLY CIRCUIT
1. Disconn](/manual-img/5/57357/w960_57357-1657.png)
EC-364
< COMPONENT DIAGNOSIS >[HR16DE]
P0643 SENSOR POWER SUPPLY
YES >> GO TO 2.
NO >> Repair or replace ground connection.
2.CHECK ACCELERATOR PEDAL POSITION
SENSOR 1 POWER SUPPLY CIRCUIT
1. Disconnect accelerator pedal position (APP) sensor harness connector.
2. Turn ignition switch ON.
3. Check the voltage between APP sensor harness connector and ground.
Is the inspection result normal?
YES >> GO TO 7.
NO >> GO TO 3.
3.CHECK SENSOR POWER SUPPLY CIRCUITS
Check harness for short to power and short to ground, between the following terminals.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair short to ground or short to power in harness or connectors.
4.CHECK COMPONENTS
Check the following.
• Camshaft position sensor (PHASE) (Refer to EC-276, "
Component Inspection".)
Is the inspection result normal?
YES >> GO TO 5.
NO >> Replace camshaft position sensor (PHASE). Refer to EM-59, "
Exploded View".
5.CHECK TP SENSOR
Refer to EC-177, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 9.
NO >> GO TO 6.
6.REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace electric throttle control actuator. Refer to EM-27, "
Exploded View".
2. Perform EC-25, "
ACCELERATOR PEDAL RELEASED POSITION LEARNING : Special Repair Require-
ment".
>> INSPECTION END
7.CHECK APP SENSOR
Refer to EC-405, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 9.
NO >> GO TO 8.
APP sensor Ground Voltage
Connector Terminal
E12 4Ground Approx. 5 V
PBIA9606J
ECM Sensor
Connector Terminal NameConnector Terminal
F11 72 Electric throttle control actuator
F72
78 CMP sensor (PHASE) F211
E16 106 APP sensor E124
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P0643 SENSOR POWER SUPPLYEC-365
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8.REPLACE ACCELERATOR PEDAL ASSEMBLY
1. Replace accelerator pedal assembly. Refer to EM-27, "
Exploded View".
2. Perform EC-405, "
Special Repair Requirement".
>> INSPECTION END
9.CHECK INTERMITTENT INCIDENT
Refer to EC-122, "
Diagnosis Procedure".
>> INSPECTION END
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![NISSAN LATIO 2011 Service Repair Manual EC-366
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P0850 PNP SWITCH
P0850 PNP SWITCH
DescriptionINFOID:0000000005930035
When the shift lever position is Neutral, pa
rk/neutral position (PNP) switch is ON. (M/T)
W NISSAN LATIO 2011 Service Repair Manual EC-366
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P0850 PNP SWITCH
P0850 PNP SWITCH
DescriptionINFOID:0000000005930035
When the shift lever position is Neutral, pa
rk/neutral position (PNP) switch is ON. (M/T)
W](/manual-img/5/57357/w960_57357-1659.png)
EC-366
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P0850 PNP SWITCH
P0850 PNP SWITCH
DescriptionINFOID:0000000005930035
When the shift lever position is Neutral, pa
rk/neutral position (PNP) switch is ON. (M/T)
When the shift lever position is P or N, transmission range switch is ON. (A/T)
ECM detects the position because the conti nuity of the line (the ON signal) exists.
DTC LogicINFOID:0000000005930036
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.INSPECTION START
Do you have CONSULT-III?
Do you have CONSULT-III?
YES >> GO TO 2.
NO >> GO TO 5.
2.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
>> GO TO 3.
3.CHECK PNP SWITCH (M/T) OR TRANSMI SSION RANGE SWITCH (A/T) FUNCTION
With CONSULT-III
1. Turn ignition switch ON.
2. Select “P/N POSI SW” in “DATA MONITOR” mode with CONSULT-III. Then check the “P/N POSI SW” sig-
nal under the following conditions.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Go to EC-368, "
Diagnosis Procedure".
4.PERFORM DTC CONFIRMATION PROCEDURE
1. Select “DATA MONITOR” mode with CONSULT-III.
2. Start engine and warm it up to normal operating temperature.
3. Maintain the following conditions for at least 50 consecutive seconds. CAUTION:
Always drive vehicle at a safe speed.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0850 Park/neutral position
switch The signal of the park/neutral position (PNP)
switch (M/T) or transmis
sion range switch (A/T)
is not changed in the process of engine starting
and driving. • Harness or connectors
[The park/neutral position (PNP) switch
(M/T) or transmission range switch (A/T)
circuit is open or shorted.]
• Park/neutral position (PNP) switch (M/T)
• Transmission range switch (A/T)
Selector lever position Known-good signal
N or P position (A/T)
Neutral position (M/T) ON
Except above position OFF
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4. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-368, "Diagnosis Procedure".
NO >> INSPECTION EN NISSAN LATIO 2011 Service Repair Manual P0850 PNP SWITCHEC-367
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4. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-368, "Diagnosis Procedure".
NO >> INSPECTION EN](/manual-img/5/57357/w960_57357-1660.png)
P0850 PNP SWITCHEC-367
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4. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-368, "Diagnosis Procedure".
NO >> INSPECTION END
5.PERFORM COMPONENT FUNCTION CHECK
Perform component function check. Refer to EC-367, "
Component Function Check".
NOTE:
Use component function check t he overall function of the park/neutral pos ition (PNP) switch (M/T) or transmis-
sion range switch (A/T) circuit. During this check, a 1st trip DTC might not be confirmed.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-368, "
Diagnosis Procedure".
Component Function CheckINFOID:0000000005930037
1.PERFORM COMPONENT FUNCTION CHECK
1. Turn ignition switch ON.
2. Check the voltage between ECM harness connector and ground under the following conditions.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-368, "
Diagnosis Procedure".
ENG SPEED A/T: 1,650 - 6,375 rpm
M/T: 1,930 - 6,375 rpm
COOLAN TEMP/S More than 70°C (158 °F)
B/FUEL SCHDL A/T: 3.5 - 31.8 msec
M/T: 2.5 - 31.8 msec
VHCL SPEED SE More than 64 km/h (40 mph)
Selector lever Suitable position
ECM
Ground Condition Voltage
Connector Terminal
F11 69
(PNP sig- nal) Ground
Selector
lever P or N (A/T)
Neutral (M/T)
Approx. 0 V
Except
above Battery voltage
SEC910C
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EC-368
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P0850 PNP SWITCH
Wiring Diagram
INFOID:0000000005930038
Diagnosis ProcedureINFOID:0000000005930039
1.CHECK PNP SWITCH (M/T) OR TRANSMISSION RANGE SWITCH (A/T) POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect park/neutral position (PNP) switch (M/T) or transmission range switch (A/T) harness connec-
tor.
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3. Turn ignition switch ON.
4. Check the voltage between PNP switch (M/T) or transmission range switch (A/T) har NISSAN LATIO 2011 Service Repair Manual P0850 PNP SWITCHEC-369
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3. Turn ignition switch ON.
4. Check the voltage between PNP switch (M/T) or transmission range switch (A/T) har](/manual-img/5/57357/w960_57357-1662.png)
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3. Turn ignition switch ON.
4. Check the voltage between PNP switch (M/T) or transmission range switch (A/T) harness connector and
ground.
Is the inspection result normal?
YES >> GO TO 3.
NO >> GO TO 2.
2.DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F8
• IPDM E/R harness connector E43 (M/T)
• IPDM E/R harness connector E45 (A/T)
• 10 A fuse (No. 51) (M/T)
• 10 A fuse (No. 54) (A/T)
• Harness for open or short between PNP switch (M /T) or transmission range switch (A/T) and fuse
Is the inspection result normal?
>> Repair open circuit or short to ground or short to power in harness or connectors.
3.CHECK PNP INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between PNP switch (M/T) or transmission range switch (A/T) harness connector and ECM harness connector.
4. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK PNP SWITCH (M/T) OR TRAN SMISSION RANGE SWITCH (A/T)
A/T M/T
PNP switch (M/T)
Transmission range switch (A/T) Ground Voltage
Connector Terminal
F25 (A/T) 1
Ground Battery voltage
F24 (M/T) 2
PBIB3002EPBIB3003E
PNP switch (M/T)
Transmission range
switch (A/T) ECM
Continuity
Connector Terminal Connector Terminal F25 (A/T) 2 F11 69 Existed
F24 (M/T) 3
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EC-370
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P0850 PNP SWITCH
Refer to
AT-94, "Component Inspection" (A/T) or MT-13, "Checking" (M/T).
Is the inspection result normal?
YES >> GO TO 5.
NO >> Replace PNP switch (M/T) (refer to MT-18, "
Disassembly and Assembly") or transmission range
switch (A/T) (refer to AT-225, "
Transmission Range Switch" ).
5.CHECK INTERMITTENT INCIDENT
Refer to EC-122, "
Diagnosis Procedure".
>> INSPECTION END
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