2008 NISSAN LATIO ignition

EC-398
< SERVICE INFORMATION >
DTC P0605 ECM
Follow the procedure “With CONSULT-II” above.
PROCEDURE FOR MALFUNCTION B
With CONSULT-II
1. Turn ignition switch ON and wait at least 1 second.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Turn ignition switch OFF, wait at least 10 seconds and then turn
ON.
4. If 1st trip DTC is detected, go to EC-398, "
Diagnosis Procedure".
With GST
Follow the procedure “With CONSULT-II” above.
PROCEDURE FOR MALFUNCTION C
With CONSULT-II
1. Turn ignition switch ON and wait at least 1 second.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Turn ignition switch OFF, wait at least 10 seconds and then turn
ON.
4. Repeat step 3 for 32 times.
5. If 1st trip DTC is detected, go to EC-398, "
Diagnosis Procedure".
With GST
Follow the procedure “With CONSULT-II” above.
Diagnosis ProcedureINFOID:0000000001702916
1.INSPECTION START
With CONSULT-II
1. Turn ignition switch ON.
2. Select “SELF DIAG RESULTS” mode with CONSULT-II.
3. Touch “ERASE”.
4.Perform DTC Confirmation Procedure.
See EC-397, "
DTC Confirmation Procedure".
5. Is the 1st trip DTC P0605 displayed again?
With GST
1. Turn ignition switch ON.
2. Select Service $04 with GST.
3.Perform DTC Confirmation Procedure.
See EC-397, "
DTC Confirmation Procedure".
4. Is the 1st trip DTC P0605 displayed again?
Ye s o r N o
Ye s > > G O T O 2 .
No >>INSPECTION END
SEF058Y
SEF058Y

DTC P0605 ECM
EC-399
< SERVICE INFORMATION >
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2.REPLACE ECM
1. Replace ECM.
2. Perform initialization of NVIS(NATS) system and registration of all NVIS(NATS) ignition key IDs.
Refer to BL-211, "
ECM Re-communicating Function".
3. Perform EC-75, "
VIN Registration".
4. Perform EC-76, "
Accelerator Pedal Released Position Learning".
5. Perform EC-76, "
Throttle Valve Closed Position Learning".
6. Perform EC-76, "
Idle Air Volume Learning".
>>INSPECTION END

EC-400
< SERVICE INFORMATION >
DTC P0643 SENSOR POWER SUPPLY
DTC P0643 SENSOR POWER SUPPLY
On Board Diagnosis LogicINFOID:0000000001702917
This self-diagnosis has the one trip detection logic.
FAIL-SAFE MODE
When the malfunction is detected, ECM enters fail-safe mode and the MIL lights up.
DTC Confirmation ProcedureINFOID:0000000001702918
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.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 8V at idle.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for 1 second.
4. If DTC is detected, go to EC-402, "
Diagnosis Procedure".
WITH GST
Follow the procedure “WITH CONSULT-II” above.
DTC No.Trouble diagnosis
nameDTC detecting condition Possible cause
P0643
0643Sensor power supply
circuit shortECM detects a voltage of power source for
sensor is excessively low or high.• Harness or connectors
(APP sensor 1 circuit is shorted.)
(Throttle position sensor circuit is shorted.)
[Camshaft position sensor (PHASE) circuit is
shorted.]
• Accelerator pedal position sensor
• Throttle position sensor
• Camshaft position sensor (PHASE)
Engine operation condition in fail-safe mode
ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return
spring.
SEF058Y

EC-402
< SERVICE INFORMATION >
DTC P0643 SENSOR POWER SUPPLY
Diagnosis Procedure
INFOID:0000000001702920
1.CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screws on the body.
Refer to EC-142, "
Ground Inspection".
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
TER-
MI-
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NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
72 VSensor power supply
(Throttle position sensor)[Ignition switch: ON]Approximately 5V
78 OSensor power supply
[Camshaft position sensor
(PHASE)][Ignition switch: ON]Approximately 5V
102 SBSensor power supply
(APP sensor 2)[Ignition switch: ON]Approximately 5V
103 GRAccelerator pedal position
sensor 2[Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully released0.3 - 0.6V
[Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully depressed1.95 - 2.4V
104 YSensor ground
(APP sensor 2)[Engine is running]
•Warm-up condition
• Idle speedApproximately 0V
106 PSensor power supply
(APP sensor 1)[Ignition switch: ON]Approximately 5V
11 0 GAccelerator pedal position
sensor 1[Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully released0.6 - 0.9V
[Ignition switch: ON]
• Engine stopped
• Accelerator pedal: Fully depressed3.9 - 4.7V
111 RSensor ground
(APP sensor 1)[Engine is running]
•Warm-up condition
• Idle speedApproximately 0V
:Vehicle front
1. Body ground E24 2. Engine ground F9 3. Engine ground F16
4. Body ground E15
BBIA0698E

DTC P0643 SENSOR POWER SUPPLY
EC-403
< SERVICE INFORMATION >
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2.CHECK ACCELERATOR PEDAL POSITION SENSOR 1 POWER SUPPLY CIRCUIT
1. Disconnect accelerator pedal position (APP) sensor (1) harness
connector.
2. Turn ignition switch ON.
3. Check voltage between APP sensor terminal 4 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 8.
NG >> GO TO 3.
3.CHECK ACCELERATOR PEDAL POSITION SENSOR 1 POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between APP sensor terminal 4 and ECM terminal 106.
Refer to Wiring Diagram.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
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 CAMSHAFT POSITION SENSOR (PHASE)
Refer to EC-307, "
Component Inspection".
OK or NG
OK >> GO TO 6.
NG >> Replace camshaft position sensor (PHASE).
6.CHECK THROTTLE POSITION SENSOR
Refer to EC-492, "
Component Inspection".
BBIA0705E
Voltage: Approximately 5V
PBIA9606J
Continuity should exist.
ECM terminal Sensor terminal Reference Wiring Diagram
72 Throttle position sensor terminal 1EC-489, "
Wiring Diagram"
78 Camshaft position sensor (PHASE) terminal 1EC-304, "Wiring Diagram"
106 APP sensor terminal 4EC-401, "Wiring Diagram"

DTC P0850 PNP SWITCH
EC-405
< SERVICE INFORMATION >
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DTC P0850 PNP SWITCH
Component DescriptionINFOID:0000000001702921
When the shift lever position is P or N (A/T, CVT), Neutral (M/T), 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 ModeINFOID:0000000001702922
Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000001702923
DTC Confirmation ProcedureINFOID:0000000001702924
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-408, "
Diagnosis 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.
MONITOR ITEM CONDITION SPECIFICATION
P/N POSI SW • Ignition switch: ONShift lever: P or N (A/T, CVT),
Neutral (M/T)ON
Shift lever: Except above OFF
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0850
0850Park/neutral position switchThe signal of the park/neutral position (PNP)
switch is not changed in the process of en-
gine starting and driving.• Harness or connectors
[Park/neutral position (PNP) switch circuit
is open or shorted.]
• Park/neutral position (PNP) switch
• TCM (CVT models)
Position (Shift lever) Known-good signal
N or P position (A/T, CVT)
Neutral position (M/T)ON
Except above OFF
SEF212Y

EC-406
< SERVICE INFORMATION >
DTC P0850 PNP SWITCH
5. Maintain the following conditions for at least 60 consecutive sec-
onds.
6. If 1st trip DTC is detected, go to EC-408, "
Diagnosis Procedure".
Overall Function CheckINFOID:0000000001702925
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 69 (PNP switch signal)
and ground under the following conditions.
3. If NG, go to EC-408, "
Diagnosis Procedure".
ENG SPEED More than 1,100 rpm
COOLAN TEMP/S More than 70°C (158°F)
B/FUEL SCHDL 3.5 - 31.8 msec
VHCL SPEED SE More than 64km/h (29 MPH)
Shift lever Suitable position
SEF213Y
Condition (Shift lever) Voltage V (Known-good data)
P or N position (A/T, CVT)
Neutral position (M/T)Approx. 0
Except aboveBATTERY VOLTAGE
(11 - 14V)
SEC910C

EC-408
< SERVICE INFORMATION >
DTC P0850 PNP SWITCH
Diagnosis Procedure
INFOID:0000000001702927
A/T MODELS
1.CHECK PNP SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect PNP switch harness connector.
3. Turn ignition switch ON.
4. Check voltage between PNP switch terminal 1 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2.DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F8
• Harness for open or short between PNP switch and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors.
3.CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between PNP switch terminal 2 and ECM terminal 69.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK PNP SWITCH
Refer to AT-90, "
Component Inspection".
OK or NG
OK >> GO TO 5.
NG >> Replace PNP switch.
5.CHECK INTERMITTENT INCIDENT
Refer to EC-136
.
TERMI-
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NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
69 LPark/neutral position
(PNP) switch[Ignition switch: ON]
• Shift lever: P or N (A/T, CVT),
Neutral (M/T)BATTERY VOLTAGE
(11 - 14V)
[Ignition switch: ON]
• Except aboveApproximately 0V
Voltage: Battery voltage
PBIB3002E
Continuity should exist.