2009 NISSAN LATIO wiring

EC
NP
O
OK or NG OK >> GO TO 8.
NG >> Repair short to ground or short to power in harness or connectors. .)
• Crankshaft position sensor (POS) (Refer to EC-780, " Component Inspection " .)
OK or NG OK >> GO TO 9.
NG >> Replace malfunctioning components. Component Inspection " .
OK or NG OK >> GO TO 11.
NG >> GO TO 10. 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 13.
NG >> GO TO 12. 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-838< SERVICE INFOMATION >
[MR TYPE 1]
DTC P0452 EVAP CONTROL
SYSTEM PRESSURE SENSOR
1. Check harness continuity between ECM terminal 42 and EVAP control system pressure sensor terminal
2. Refer to Wiring Diagram.
2. Also check harness for short to ground and short to power.
OK or NG OK >> GO TO 15.
NG >> GO TO 14. 14.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F8
• Harness connectors M69, E7
• Harness connectors B102, M13
• Harness for open or short between ECM and EV AP control system pressure sensor
>> Repair open circuit or short to ground or short to power in harness or connectors. 15.
CHECK EVAP CONTROL SYS TEM PRESSURE SENSOR
Refer to EC-838, " Component Inspection " .
OK or NG OK >> GO TO 16.
NG >> Replace EVAP control system pressure sensor. 16.
CHECK INTERMITTENT INCIDENT
Refer to EC-626 .
>> INSPECTION END
Component Inspection INFOID:0000000004537334
EVAP CONTROL SYSTEM PRESSURE SENSOR
1. Remove EVAP control system pressure sensor wit h its harness connector connected from EVAP canister.
Always replace O-ring with a new one.
2. Install a vacuum pump to EVAP control system pressure sensor.
3. Turn ignition switch ON and check output voltage between ECM terminal 42 (EVAP control system pressure sensor signal) and
ground under the following conditions.
CAUTION:
• Always calibrate the vacuum pump gauge when using it.
• Do not apply below -93.3 kP a (-700 mmHg, -27.56 inHg) or
pressure over 101.3 kPa (760 mmHg, 29.92 inHg).
4. If NG, replace EVAP control system pressure sensor. Continuity should exist.
Applied vacuum kPa (mmHg, inHg) Voltage V
Not applied 1.8 - 4.8
-26.7 (-200, -7.87) 2.1 to 2.5V lower than above value PBIB3314E

DTC P0453 EVAP CONTROL
SYSTEM PRESSURE SENSOR
EC-841
< SERVICE INFOMATION >
[MR TYPE 1] C
D E
F
G H
I
J
K L
M A EC
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O
Wiring Diagram
INFOID:0000000004537339
Specification data are reference values and are measured between each terminal and ground.
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. AABWA0328G B

OK >> GO TO 8.
NG >> Repair short to ground or short to power in harness or connectors. .)
• Crankshaft position sensor (POS) (Refer to EC-780, " Component Inspection " .)
OK or NG OK >> GO TO 9.
NG >> Replace malfunctioning components. Component Inspection " .
OK or NG OK >> GO TO 11.
NG >> GO TO 10. 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 13.
NG >> GO TO 12. 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 "

DTC P0453 EVAP CONTROL
SYSTEM PRESSURE SENSOR
EC-845
< SERVICE INFOMATION >
[MR TYPE 1] C
D E
F
G H
I
J
K L
M A EC
NP
O
1. Check harness continuity between ECM terminal 42 and EVAP control system pressure sensor terminal
2. Refer to Wiring Diagram.
2. Also check harness for short to ground and short to power.
OK or NG OK >> GO TO 15.
NG >> GO TO 14. 14.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F8
• Harness connectors M69, E7
• Harness connectors B102, M13
• Harness for open or short between ECM and EVAP control system pressure sensor
>> Repair open circuit or short to ground or short to power in harness or connectors. 15.
CHECK RUBBER TUBE
1. Disconnect rubber tube connected to EV AP canister vent control valve.
2. Check the rubber tube for clogging, vent and kinked.
OK or NG OK >> GO TO 16.
NG >> Clean the rubber tube using an air blower, repair or replace rubber tube. 16.
CHECK EVAP CANISTER VENT CONTROL VALVE
Refer to EC-821, " Component Inspection " .
OK or NG OK >> GO TO 17.
NG >> Replace EVAP canister vent control valve. 17.
CHECK EVAP CONTROL SYSTEM PRESSURE SENSOR
Refer to EC-846, " Component Inspection " .
OK or NG OK >> GO TO 18.
NG >> Replace EVAP control system pressure sensor. 18.
CHECK IF EVAP CANISTER SATURATED WITH WATER
1. Remove EVAP canister with EVAP canister vent c ontrol valve and EVAP control system pressure sensor
attached.
2. Does water drain from the EVAP canister?
Yes or No Yes >> GO TO 19.
No >> GO TO 21. 19.
CHECK EVAP CANISTER
Weigh the EVAP canister with the EVAP canister vent control valve and EVAP control system pressure sen-
sorattached.
The weight should be less than 1.9 kg (4.2 lb).
OK or NG Continuity should exist.
PBIB1213E

DTC P0643 SENSOR POWER SUPPLY
EC-875
< SERVICE INFOMATION >
[MR TYPE 1] C
D E
F
G H
I
J
K L
M A EC
NP
O
Wiring Diagram
INFOID:0000000004537383
Specification data are reference values and are measured between each terminal and ground.
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. BBWA2649E

EC
NP
O OK >> GO TO 8.
NG >> GO TO 3. OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors. OK >> GO TO 5.
NG >> Repair short to ground or short to power in harness or connectors. Component Inspection " .
OK or NG OK >> GO TO 6.
NG >> Replace camshaft position sensor (PHASE). Component Inspection " . Wiring Diagram "
78 Camshaft position sensor (PHASE) terminal 1
EC-782, " Wiring Diagram "
106 APP sensor terminal 4
EC-875, " Wiring Diagram "

EC
NP
O
Wiring Diagram
INFOID:0000000004537390
Specification data are reference values and are measured between each terminal and ground.
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.