NISSAN LATIO 2009 Service Repair Manual

DTC P0335 CKP SENSOR (POS)
EC-775
< SERVICE INFOMATION >
[MR TYPE 1] C
D E
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DTC P0335 CKP SENSOR (POS)
Component Description INFOID:0000000004537264
The crankshaft position sensor (POS) is located on the cylinder
block rear housing facing the gear t eeth (cogs) of the signal plate at
the end of the crankshaft. It detects the fluctuation of the engine rev-
olution. The sensor consists of a permanent magnet and Hall IC.
When the engine is running, the high and low parts of the teeth
cause the gap with the sensor to change. The changing gap causes
the magnetic field near the sensor to change. Due to the changing
magnetic field, the voltage from the sensor changes. The ECM
receives the voltage signal and detects the fluctuation of the engine
revolution.
ECM receives the signals as shown in the figure.
CONSULT-III Reference Val ue in Data Monitor Mode INFOID:0000000004537265
Specification data are reference values.
On Board Diagnosis Logic INFOID:0000000004537266
DTC Confirmation Procedure INFOID:0000000004537267
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.
TESTING CONDITION: PBIA9209J
PBIB2997E
MONITOR ITEM CONDITION SPECIFICATION
ENG SPEED • Run engine and compare CONSULT-III value with the tachometer indica-
tion. Almost the same speed as the ta-
chometer indication. DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0335
0335 Crankshaft position sen-
sor (POS) circuit • The crankshaft position sensor (POS) signal is not
detected by the ECM during the first few seconds of
engine cranking.
• The proper pulse signal from the crankshaft position sensor (POS) is not sent to ECM while the engine is
running.
• The crankshaft position sensor (POS) signal is not in the normal pattern during engine running. • Harness or connectors
[Crankshaft position sensor (POS)
circuit is open or shorted.]
(Accelerator pedal position sensor
circuit is shorted.)
(Refrigerant pressure sensor circuit
is shorted.)
(EVAP control system pressure
sensor circuit is shorted.)
• Crankshaft position sensor (POS)
• Accelerator pedal position sensor
• Refrigerant pressure sensor
• EVAP control system pressure sen- sor
• Signal plate

EC-776< SERVICE INFOMATION >
[MR TYPE 1]
DTC P0335 CKP SENSOR (POS)
Before performing the following pro cedure, confirm that battery voltage is more than 10.5V with igni-
tion switch ON.
1. Crank engine for at least 2 seconds and run it for at least 5 seconds at idle speed.
2. Check 1st trip DTC.
3. If 1st trip DTC is detected, go to EC-777, " Diagnosis Procedure " .
Wiring Diagram INFOID:0000000004537268 BBWA3071E

DTC P0335 CKP SENSOR (POS)
EC-777
< SERVICE INFOMATION >
[MR TYPE 1] C
D E
F
G H
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J
K L
M A EC
NP
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Specification data are reference values
and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-III.
CAUTION:
Do not use ECM ground terminals wh en measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground ot her than ECM terminals, such as the ground.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
Diagnosis Procedure INFOID:00000000045372691.
CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screws on the body. Refer to EC-632, " Ground Inspection " .
TERMI-
NAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
61 W Crankshaft position sensor
(POS) [Engine is running]
• Warm-up condition
• Idle speed NOTE:
The pulse cycle changes depending on rpm
at idle. Approximately 4.0V
[Engine is running]
• Engine speed: 2,000 rpm Approximately 4.0V
62 R Sensor ground
[Crankshaft position sensor
(POS)] [Engine is running]
• Warm-up condition
• Idle speed Approximately 0V
74 W Sensor power supply
(Refrigerant pressure sen-
sor) [Ignition switch: ON]
Approximately 5V
75 BR Sensor power supply
[Crankshaft position sensor
(POS)] [Ignition switch: ON]
Approximately 5V
76 W EVAP control system pres-
sure sensor power supply [Ignition switch: ON]
Approximately 5V
102 SB Sensor power supply
(APP sensor 2) [Ignition switch: ON]
Approximately 5V PBIB2998E
PBIB2999E
BBIA0698E

OK >> GO TO 2.
NG >> Repair or replace ground connections. OK >> GO TO 8.
NG >> GO TO 3. OK >> GO TO 4.
NG >> Repair open circuit. OK >> GO TO 5.
NG >> Repair short to ground or short to power in harness or connectors. :
Vehicle front
1. Body ground E24 2. Engine ground F9 3. Engine ground F16
4. Body ground E15 Wiring Diagram "
75 Crankshaft position sensor (POS) terminal 1
EC-776, " Wiring Diagram "
76 EVAP control system pressure sensor terminal 3
EC-834, " Wiring Diagram "
102 APP sensor terminal 5
EC-949, " Wiring Diagram "

EC
NP
O .)
• EVAP control system pressure sensor. (Refer to EC-838, " Component Inspection " .)
OK or NG OK >> GO TO 6.
NG >> Replace malfunctioning components. Component Inspection " .
OK or NG OK >> GO TO 8.
NG >> GO TO 7. Accelerator Pedal Released Position Learning " .
3. Perform EC-572, " Throttle Valve Closed Position Learning " .
4. Perform EC-572, " Idle Air Volume Learning " .
>> INSPECTION END OK >> GO TO 9.
NG >> Repair open circuit or short to ground or short to power in harness or connectors. OK >> GO TO 10.
NG >> Repair open circuit or short to ground or short to power in harness or connectors. Component Inspection " .
OK or NG OK >> GO TO 11.
NG >> Replace crankshaft position sensor (POS). OK >> GO TO 12.
NG >> Replace the signal plate. Continuity should exist.
Continuity should exist.

.
>> INSPECTION END
Component Inspection INFOID:0000000004537270
CRANKSHAFT POSITION SENSOR (POS)
1. Loosen the fixing bolt of the sensor.
2. Disconnect crankshaft position sensor (POS) harness connector.
3. Remove the sensor.
4. Visually check the sensor for chipping.
5. Check resistance as shown in the figure.
6. If NG, replace crankshaft position sensor (POS).
Removal and Installation INFOID:0000000004537271
CRANKSHAFT POSITION SENSOR (POS)
Refer to EM-199 .

DTC P0340 CMP SENSOR (PHASE)
EC-781
< SERVICE INFOMATION >
[MR TYPE 1] C
D E
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M A EC
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DTC P0340 CMP SENSOR (PHASE)
Component Description INFOID:0000000004537272
The camshaft position sensor (PHASE) senses the protrusion of
camshaft (INT) to identify a particular cylinder. The camshaft position
sensor (PHASE) senses the pist on position. When the crankshaft
position sensor (POS) system becomes inoperative, the camshaft
position sensor (PHASE) provides various controls of engine parts
instead, utilizing timing of cylinder identification signals. The sensor
consists of a permanent magnet and Hall IC. When engine is run-
ning, the high and low parts of the teeth cause the gap with the sen-
sor to change. The changing gap causes the magnetic field near the
sensor to change. Due to the changing magnetic field, the voltage
from the sensor changes.
ECM receives the signals as shown in the figure.
CONSULT-III Reference Val ue in Data Monitor Mode INFOID:0000000004537273
Specification data are reference values.
On Board Diagnosis Logic INFOID:0000000004537274
NOTE:
If DTC P0340 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Refer to EC-874 .
DTC Confirmation Procedure INFOID:0000000004537275
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.
TESTING CONDITION:
Before performing the following procedure, confirm th at battery voltage is more than 10.5V with igni-
tion switch ON.
1. Crank engine for at least 2 seconds and run it for at least 5 seconds at idle speed. PBIA9875J
PBIB2997E
MONITOR ITEM CONDITION SPECIFICATION
ENG SPEED • Run engine and compare CONSULT-III value with the tachometer indica-
tion. Almost the same speed as the ta-
chometer indication. DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0340
0340 Camshaft position sensor
(PHASE) circuit • The cylinder No. signal is not sent to ECM for
the first few seconds during engine cranking.
• The cylinder No. signal is not set to ECM dur- ing engine running.
• The cylinder No. signal is not in the normal
pattern during engine running. • Harness or connectors
[Camshaft position sensor (PHASE) cir-
cuit is open or shorted.]
• Camshaft position sensor (PHASE)
• Camshaft (INT)
• Starter motor (Refer to SC-9 .)
• Starting system circuit (Refer to SC-9 )
• Dead (Weak) battery

EC-782< SERVICE INFOMATION >
[MR TYPE 1]
DTC P0340 CMP SENSOR (PHASE)
2. Check 1st trip DTC.
3. If 1st trip DTC is detected, go to EC-783, " Diagnosis Procedure " .
If 1st trip DTC is not detected, go to next step.
4. Maintain engine speed at more t han 800 rpm for at least 5 seconds.
5. Check 1st trip DTC.
6. If 1st trip DTC is detected, go to EC-783, " Diagnosis Procedure " .
Wiring Diagram INFOID:0000000004537276 BBWA2639E

DTC P0340 CMP SENSOR (PHASE)
EC-783
< SERVICE INFOMATION >
[MR TYPE 1] C
D E
F
G H
I
J
K L
M A EC
NP
O
Specification data are reference values
and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-III.
CAUTION:
Do not use ECM ground terminals wh en measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground ot her than ECM terminals, such as the ground.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
Diagnosis Procedure INFOID:00000000045372771.
CHECK STARTING SYSTEM
Turn ignition switch to START position.
Yes or No Yes >> GO TO 2.
No >> Check starting system. (Refer to SC-9 .)
2.
CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screws on the body. Refer to EC-632, " Ground Inspection " .
TERMI-
NAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
63 BR Sensor ground
[Camshaft position sensor
(PHASE)] [Engine is running]
• Warm-up condition
• Idle speed Approximately 0V
65 G Camshaft position sensor
(PHASE) [Engine is running]
• Warm-up condition
• Idle speed
NOTE:
The pulse cycle changes depending on rpm at
idle. 1.0 - 2.0V
[Engine is running]
• Engine speed: 2,000 rpm. 1.0 - 2.0V
78 O Sensor power supply
[Camshaft position sensor
(PHASE)] [Ignition switch: ON]
Approximately 5V PBIB2986E
PBIB2987E
Does the engine turn over?
Does the starter motor operate?

EC-784< SERVICE INFOMATION >
[MR TYPE 1]
DTC P0340 CMP SENSOR (PHASE)
OK or NG OK >> GO TO 3.
NG >> Repair or replace ground connections. 3.
CHECK CAMSHAFT POSITION (CMP) SENS OR (PHASE) POWER SUPPLY CIRCUIT
1. Disconnect camshaft position (CMP) sensor (PHASE) (1) har- ness connector.
- : Vehicle front
2. Turn ignition switch ON.
3. Check voltage between CMP sensor (PHASE) terminal 1 and ground with CONSULT-III or tester.
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 CMP SENSOR (PHASE) GRO UND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between CMP sensor (PHASE) terminal 2 and ECM terminal 63.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors. 5.
CHECK CMP SENSOR (PHASE) INPUT SI GNAL CIRCUIT FOR OPEN AND SHORT
:
Vehicle front
1. Body ground E24 2. Engine ground F9 3. Engine ground F16
4. Body ground E15 BBIA0698E
PBIB3327E
Voltage: Approximately 5V
PBIB3312E
Continuity should exist.