2009 NISSAN LATIO ignition

DTC P0327, P0328 KS
EC-1291
< SERVICE INFOMATION >
[MR TYPE 2] C
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Diagnosis Procedure
INFOID:00000000045001471.
CHECK KNOCK SENSOR INPUT SIGNAL CIRCUIT-I
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check resistance between ECM terminal 37 and ground. Refer to Wiring Diagram. NOTE:
It is necessary to use an ohmmeter which can measure more than 10 M Ω.
4. Also check harness for short to ground and short to power.
OK or NG OK >> GO TO 4.
NG >> GO TO 2. 2.
CHECK KNOCK SENSOR INPUT SIGNAL CIRCUIT-II
1. Disconnect knock sensor (1) harness connector.
- : Vehicle front
2. Check harness continuity between ECM terminal 37 and knock sensor terminal 1. Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG OK >> GO TO 3.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors. 3.
CHECK KNOCK SENSOR
Refer to EC-1292, " Component Inspection " .
OK or NG OK >> GO TO 6.
NG >> Replace knock sensor. 4.
CHECK GROUND CONNECTIONS
Loosen and retighten ground screws on the body.
Refer to EC-1144, " Ground Inspection " .
TERMI-
NAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
37 W Knock sensor [Engine is running]
• Idle speed Approximately 2.5V
40 — Sensor ground
(Knock sensor) [Engine is running]
• Warm-up condition
• Idle speed Approximately 0VResistance: Approximately 532 - 588k
Ω [at 20 °C (68 °F)]
Continuity should exist. PBIB3264E
BBIA0698E

DTC P0335 CKP SENSOR (POS)
EC-1293
< SERVICE INFOMATION >
[MR TYPE 2] C
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DTC P0335 CKP SENSOR (POS)
Component Description INFOID:0000000004500150
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:0000000004500151
Specification data are reference values.
On Board Diagnosis Logic INFOID:0000000004500152
DTC Confirmation Procedure INFOID:0000000004500153
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

DTC P0335 CKP SENSOR (POS)
EC-1295
< SERVICE INFOMATION >
[MR TYPE 2] C
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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:00000000045001551.
CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screws on the body. Refer to EC-1144, " 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

EC-1296< SERVICE INFOMATION >
[MR TYPE 2]
DTC P0335 CKP SENSOR (POS)
OK or NG OK >> GO TO 2.
NG >> Repair or replace ground connections. 2.
CHECK CRANKSHAFT POSITION (CKP) SENS OR (POS) POWER SUPPLY CIRCUIT-I
1. Disconnect crankshaft position (CKP) sensor (POS) (1) harness connector.
2. Turn ignition switch ON.
3. Check voltage between CKP sensor (POS) terminal 1 and ground with CONSULT-III or tester.
OK or NG OK >> GO TO 8.
NG >> GO TO 3. 3.
CHECK CKP SENSOR (POS) POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between CKP sens or (POS) terminal 1 and ECM terminal 75.
Refer to Wiring Diagram.
OK or NG OK >> GO TO 4.
NG >> Repair open circuit. 4.
CHECK COMPONENTS POWER SUPPLY
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. :
Vehicle front
1. Body ground E24 2. Engine ground F9 3. Engine ground F16
4. Body ground E15 PBIB3326E
Voltage: Approximately 5V
PBIB3312E
Continuity should exist.
ECM terminal Sensor terminal Reference Wiring Diagram 74 Refrigerant pressure sensor terminal 3 EC-1528, " Wiring Diagram "
75 Crankshaft position sensor (POS) terminal 1
EC-1294, " Wiring Diagram "
76 EVAP control system pressure sensor terminal 3
EC-1353, " Wiring Diagram "
102 APP sensor terminal 5
EC-1471, " Wiring Diagram "

DTC P0340 CMP SENSOR (PHASE)
EC-1299
< SERVICE INFOMATION >
[MR TYPE 2] C
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DTC P0340 CMP SENSOR (PHASE)
Component Description INFOID:0000000004500158
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:0000000004500159
Specification data are reference values.
On Board Diagnosis Logic INFOID:0000000004500160
NOTE:
If DTC P0340 is displayed with DTC P0643, first perform the trouble diagnosis for DTC P0643.
Refer to EC-1396 .
DTC Confirmation Procedure INFOID:0000000004500161
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
• Starting system circuit
• Dead (Weak) battery

DTC P0340 CMP SENSOR (PHASE)
EC-1301
< SERVICE INFOMATION >
[MR TYPE 2] C
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M A EC
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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:00000000045001631.
CHECK STARTING SYSTEM
Turn ignition switch to START position.
Yes or No Yes >> GO TO 2.
No >> Check starting system. (Refer to SC-16, " Trouble Diagnosis with Multitasking Battery Diagnostic
Station " .)
2.
CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screws on the body.
Refer to EC-1144, " 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-1302< SERVICE INFOMATION >
[MR TYPE 2]
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.

DTC P0420 THREE WAY CATALYST FUNCTION
EC-1305
< SERVICE INFOMATION >
[MR TYPE 2] C
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DTC P0420 THREE WAY CATALYST FUNCTION
On Board Diagnosis Logic INFOID:0000000004500166
The ECM monitors the switching frequency ratio of air fuel ratio (A/F)
sensor 1 and heated oxygen sensor 2.
A three way catalyst (manifold) with high oxygen storage capacity
will indicate a low switching frequency of heated oxygen sensor 2.
As oxygen storage capacity decr eases, the heated oxygen sensor 2
switching frequency will increase.
When the frequency ratio of air fuel ratio (A/F) sensor 1 and heated
oxygen sensor 2 approaches a specified limit value, the three way
catalyst (manifold) malfunction is diagnosed.
DTC Confirmation Procedure INFOID:0000000004500167
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
TESTING CONDITION:
Do not hold engine speed for more than the specified minutes below.
1. Turn ignition switch ON and select “DATA MONITOR” mode with CONSULT-III.
2. Start engine and warm it up to the normal operating temperature.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.
5. Let engine idle for 1 minute.
6. Make sure that “COOLAN TEMP/S” indicates more than 70 °C (158 °F).
If not, warm up engine and go to next step when “COOLAN TEMP/S” indication reaches to 70°C (158 °F).
7. Open engine hood.
8. Select “DTC & SRT CONFIRMATION” then “SRT WORK SUPPORT” mode with CONSULT-III.
9. Rev engine up to 2,000 to 3,000 rpm and hold it for 3 consecutive minutes then release the accelerator pedal completely.
If “INCMP” of “CATALYST” changed to “CMPLT”, go to step 12.
10. Wait 5 seconds at idle.
11. Rev engine up to 2,000 to 3,000 rpm and maintain it unt il “INCMP” of “CATALYST” changes to “CMPLT” (It
will take approximately 5 minutes).
If not “CMPLT”, stop engine and cool it down to less than 70 °C (158 °F) and then retest from step 1.
12. Check 1st trip DTC. If 1st trip DTC is detected, go to EC-1306, " Diagnosis Procedure " .
Overall Function Check INFOID:0000000004500168
Use this procedure to check the overall function of the th ree way catalyst (manifold). During this check, a 1st
trip DTC might not be confirmed. SEF484YB
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0420
0420 Catalyst system efficiency
below threshold • Three way catalyst (manifold) does not operate
properly.
• Three way catalyst (manifold) does not have enough oxygen storage capacity. • Three way catalyst (manifold)
• Exhaust tube
• Intake air leaks
• Fuel injector
• Fuel injector leaks
• Spark plug
• Improper ignition timing