2009 NISSAN LATIO service

DTC P0327, P0328 KS
EC-1289
< SERVICE INFOMATION >
[MR TYPE 2] C
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DTC P0327, P0328 KS
Component Description INFOID:0000000004500143
The knock sensor (1) is attached to the cylinder block. It senses
engine knocking using a piezoelectric element. A knocking vibration
from the cylinder block is sensed as vibrational pressure. This pres-
sure is converted into a voltage signal and sent to the ECM.
• : Vehicle front
On Board Diagnosis Logic INFOID:0000000004500144
The MIL will not light up for these self-diagnoses.
DTC Confirmation Procedure INFOID:0000000004500145
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 that battery voltage is more than 10V at idle.
1. Start engine 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-1291, " Diagnosis Procedure " . PBIB3264E
DTC No. Trouble Diagno
sis Name DTC Detected Co ndition Possible Cause
P0327
0327 Knock sensor circuit low
input An excessively low voltage from the sensor is
sent to ECM. • Harness or connectors
(Knock sensor circuit is open or shorted.)
• Knock sensor
P0328
0328 Knock sensor circuit high
input An excessively high voltage from the sensor is
sent to ECM.

EC-1290< SERVICE INFOMATION >
[MR TYPE 2]
DTC P0327, P0328 KS
Wiring Diagram INFOID:0000000004500146
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring in put/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. BBWA2637E

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

EC-1292< SERVICE INFOMATION >
[MR TYPE 2]
DTC P0327, P0328 KS
OK or NG OK >> GO TO 5.
NG >> Repair or replace ground connections. 5.
CHECK KNOCK SENSOR SHIELD CIRCUIT FOR OPEN AND SHORT
1. Reconnect knock sensor harness connector.
2. Check harness continuity between ECM terminal 40 and knock sensor terminal 2.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG OK >> GO TO 6.
NG >> Repair open circuit or short to ground or short to power in harness or connectors. 6.
CHECK INTERMITTENT INCIDENT
Refer to EC-1138 .
>> INSPECTION END
Component Inspection INFOID:0000000004500148
KNOCK SENSOR
1. Check resistance between knock sensor terminal 1 and ground. NOTE:
It is necessary to use an ohmmeter which can measure
more than 10 M Ω.
CAUTION:
Do not use any knock sensors that have been dropped or
physically damaged. Use only new ones.
2. If NG, replace knock sensor.
Removal and Installation INFOID:0000000004500149
KNOCK SENSOR
Refer to EM-199, " Component " .
:
Vehicle front
1. Body ground E24 2. Engine ground F9 3. Engine ground F16
4. Body ground E15 Continuity should exist
Resistance: Approximately 532 - 588k Ω [at 20 °C (68 °F)] SEF227W

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

EC-1294< SERVICE INFOMATION >
[MR TYPE 2]
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-1295, " Diagnosis Procedure " .
Wiring Diagram INFOID:0000000004500154 BBWA3071E

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 "