2009 NISSAN LATIO wiring

EC-772< SERVICE INFOMATION >
[MR TYPE 1]
DTC P0327, P0328 KS
Wiring Diagram INFOID:0000000004537260
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-773
< SERVICE INFOMATION >
[MR TYPE 1] C
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Diagnosis Procedure
INFOID:00000000045372611.
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-774, " 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-632, " 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-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

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-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

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.

DTC P0340 CMP SENSOR (PHASE)
EC-785
< SERVICE INFOMATION >
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1. Check harness continuity between CMP sens
or (PHASE) terminal 3 and ECM terminal 65.
Refer to Wiring Diagram.
2. 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 CAMSHAFT POSITI ON SENSOR (PHASE)
Refer to EC-785, " Component Inspection " .
OK or NG OK >> GO TO 7.
NG >> Replace camshaft position sensor (PHASE). 7.
CHECK CAMSHAFT (INTAKE)
Check the following.
• Accumulation of debris to the signal plate of camshaft (1) rear end
• Chipping signal plate of camshaft rear end
OK or NG OK >> GO TO 8.
NG >> Remove debris and clean the signal plate of camshaft
rear end or replace camshaft. 8.
CHECK INTERMITTENT INCIDENT
Refer to EC-626 .
>> INSPECTION END
Component Inspection INFOID:0000000004537278
CAMSHAFT POSITION SENSOR (PHASE) 1. Loosen the fixing bolt of the sensor.
2. Disconnect camshaft position s ensor (PHASE) harness connector.
3. Remove the sensor.
4. Visually check the sensor for chipping. Continuity should exist.
PBIA9557J
PBIA9876J

DTC P0420 THREE WAY CATALYST FUNCTION
EC-789
< SERVICE INFOMATION >
[MR TYPE 1] C
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OK or NG OK >> GO TO 5.
NG >> Follow the EC-566, " Basic Inspection " .
5.
CHECK FUEL INJECTOR
1. Stop engine and turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Turn ignition switch ON.
4. Check voltage between ECM terminals 25, 29, 30, 31 and ground with CONSULT-III or tester.
Refer to Wiring Diagram for fuel injectors, EC-987, " Wiring Diagram " .
OK or NG OK >> GO TO 6.
NG >> Perform EC-988, " Diagnosis Procedure " .
6.
CHECK FUNCTION OF IGNITION COIL-I
CAUTION:
Do the following procedure in the place where ventilation is good without the combustible.
1. Turn ignition switch OFF.
2. Remove fuel pump (1) fuse in IPDM E/R (2) to release fuel pres-
sure.
NOTE:
Do not use CONSULT-III to release fuel pressure, or fuel pres-
sure applies again during the following procedure.
- : Vehicle front
3. Start engine.
4. After engine stalls, crank it two or three times to release all fuel pressure.
5. Turn ignition switch OFF.
6. Remove all ignition coil harness connectors to avoid the electri- cal discharge from the ignition coils.
7. Remove ignition coil and spark plug of the cylinder to be checked.
8. Crank engine for 5 seconds or more to remove combustion gas in the cylinder.
9. Connect spark plug and harness connector to ignition coil.
10. Fix ignition coil using a rope etc. with gap of 13 - 17 mm between the edge of the spark plug and grounded metal portion
as shown in the figure.
11. Crank engine for about 3 seconds, and check whether spark is
generated between the spark plug and the grounded metal por-
tion.
CAUTION:
• Do not approach to the spar k plug and the ignition coil
within 50cm. Be careful not to get an electrical shock
while checking, because the el ectrical discharge voltage
becomes 20kV or more. Items Specifications
Target idle speed A/T: 700
± 50 rpm (in P or N position)
CVT: 700 ± 50 rpm (in P or N position)
M/T: 700 ± 50 rpm (in Neutral position)
Ignition timing A/T: 13
± 5 ° BTDC (in P or N position)
CVT: 13 ± 5 ° BTDC (in P or N position)
M/T: 13 ± 5 ° BTDC (in Neutral position) Voltage: Battery voltage
Spark should be generated. PBIB2958E
PBIB2325E