2009 NISSAN LATIO wiring

DTC P0643 SENSOR POWER SUPPLY
EC-1399
< SERVICE INFOMATION >
[MR TYPE 2] C
D E
F
G H
I
J
K L
M A EC
NP
O 2.
CHECK ACCELERATOR PEDAL POSITION SENSOR 1 POWER SUPPLY CIRCUIT
1. Disconnect accelerator pedal position (APP) sensor (1) harness connector.
2. Turn ignition switch ON.
3. Check voltage between APP sensor terminal 4 and ground with CONSULT-III or tester.
OK or NG OK >> GO TO 8.
NG >> GO TO 3. 3.
CHECK ACCELERATOR PEDAL POSITION SENSOR 1 POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between APP sensor terminal 4 and ECM terminal 106.
Refer to Wiring Diagram.
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 SENSOR POWER SUPPLY CIRCUITS
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. 5.
CHECK CAMSHAFT POSITI ON SENSOR (PHASE)
Refer to EC-1303, " Component Inspection " .
OK or NG OK >> GO TO 6.
NG >> Replace camshaft position sensor (PHASE). 6.
CHECK THROTTLE POSITION SENSOR
Refer to EC-1201, " Component Inspection " . BBIA0705E
Voltage: Approximately 5V
PBIA9606J
Continuity should exist.
ECM terminal Sensor terminal Reference Wiring Diagram 72 Throttle position sensor terminal 1 EC-1477, " Wiring Diagram "
78 Camshaft position sensor (PHASE) terminal 1
EC-1300, " Wiring Diagram "
106 APP sensor terminal 4
EC-1397, " Wiring Diagram "

EC
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Wiring Diagram
INFOID:0000000004500276
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. B

EC-1404< SERVICE INFOMATION >
[MR TYPE 2]
DTC P0850 PNP SWITCH
Diagnosis Procedure INFOID:0000000004500277
A/T MODELS AND CVT MODELS 1.
CHECK PNP SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect PNP switch harness connector.
3. Turn ignition switch ON.
4. Check voltage between PNP switch terminal 1 and ground with CONSULT-III or tester.
OK or NG OK >> GO TO 3.
NG >> GO TO 2. 2.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F8
• Harness for open or short between PNP switch and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors. 3.
CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between PNP switch terminal 2 and ECM terminal 69. Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors. TERMI-
NAL NO. WIRE
COLOR ITEM CONDITION DATA (DC Voltage)
69 L Park/neutral position
(PNP) switch [Ignition switch: ON]
• Shift lever: P or N (A/T, CVT), Neutral (M/T) BATTERY VOLTAGE
(11 - 14V)
[Ignition switch: ON]
• Except above Approximately 0V A/T CVT
Voltage: Battery voltage PBIB3002E JMBIA2080ZZ
Continuity should exist.

DTC P0850 PNP SWITCH
EC-1405
< SERVICE INFOMATION >
[MR TYPE 2] C
D E
F
G H
I
J
K L
M A EC
NP
O 4.
CHECK PNP SWITCH
Refer to AT-95, " Component Inspection " (A/T),
CVT-247, " Component Inspection " (CVT).
OK or NG OK >> GO TO 5.
NG >> Replace PNP switch. 5.
CHECK INTERMITTENT INCIDENT
Refer to EC-1138 .
>> INSPECTION END
M/T MODELS 1.
CHECK PNP SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect PNP switch harness connector.
3. Turn ignition switch ON.
4. Check voltage between PNP switch terminal 2 and ground with
CONSULT-III or tester.
OK or NG OK >> GO TO 3.
NG >> GO TO 2. 2.
DETECT MALFUNCTIONING PART
Check the following.
• Harness connectors E8, F8
• Harness for open or short between PNP switch and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors. 3.
CHECK PNP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between PNP switch terminal 3 and ECM terminal 69.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
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 PNP SWITCH
Refer to MT-54 .
OK or NG OK >> GO TO 5.
NG >> Replace PNP switch. 5.
CHECK INTERMITTENT INCIDENT
Refer to EC-1138 .
Voltage: Battery voltage
PBIB3003E
Continuity should exist.

DTC P1217 ENGINE OVER TEMPERATURE
EC-1411
< SERVICE INFOMATION >
[MR TYPE 2] C
D E
F
G H
I
J
K L
M A EC
NP
O
Wiring Diagram
INFOID:0000000004500283 BBWA2997E

EC-1414< SERVICE INFOMATION >
[MR TYPE 2]
DTC P1217 ENGINE
OVER TEMPERATURE
3. Check voltage between IPDM E/R terminal 22 and ground with CONSULT-III or tester.
OK or NG OK >> GO TO 10.
NG >> GO TO 9. 9.
DETECT MALFUNCTIONING PART
Check the following.
• 50A fusible link
• Harness for open or short between IPDM E/R and battery
>> Repair open circuit or short to ground in harness or connectors. 10.
CHECK IPDM E/R GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connectors E46 and E48.
3. Check harness continuity between IPDM E/R terminals 59, 39 and ground.
Refer to Wiring Diagram.
4. Also check harness for short to power.
OK or NG OK (Models with A/C)>>GO TO 11.
OK (Models without A/C)>>GO TO 13.
NG >> Repair open circuit or short to power in harness or connectors. 11.
CHECK COOLING FAN MOTOR CIRCUIT
1. Disconnect cooling fan motor harness connector.
2. Check harness continuity between the followings;
Cooling fan motor terminal 1 and IPDM E/R terminals 20, 24.
Cooling fan motor terminal 2 and ground.
Refer to wiring diagram.
3. Also check harness for short to ground and short to power.
OK or NG OK >> GO TO 15.
NG >> GO TO 12. 12.
DETECT MALFUNCTIONING PART
Check the following.
• Harness for open or short between cooling fan motor and IPDM E/R
• Harness for open or short between cooling fan motor and ground
• Resistor E5
>> Repair open circuit or short to ground or short to power in harness or connectors. 13.
CHECK COOLING FAN MOTOR CIRCUIT
1. Disconnect cooling fan motor harness connector.
2. Check harness continuity between the followings; Cooling fan motor terminal 1 and IPDM E/R terminal 20.Voltage: Battery voltage
PBIB2067E
Continuity should exist.
Continuity should exist.

EC
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Cooling fan motor terminal 2 and IPDM E/R terminal 24.
Cooling fan motor terminal 3 and IPDM E/R terminal 23.
Cooling fan motor terminal 4 and ground.
Refer to wiring diagram.
3. Also check harness for short to ground and short to power.
OK or NG OK >> GO TO 15.
NG >> GO TO 14. Component Inspection " .
OK or NG OK >> GO TO 16.
NG >> Replace cooling fan motor. .
OK or NG OK >> Replace IPDM E/R. Refer to
PG-27, " Removal and Installation of IPDM E/R " .
NG >> Repair or replace harness or connector.
Main 13 Causes of Overheating INFOID:0000000004500285
Continuity should exist.
Engine Step Inspection item Equipment Standard Reference OFF 1 • Blocked radiator • Blocked condenser
• Blocked radiator grille
• Blocked bumper • Visual No blocking —
2 • Coolant mixture • Coolant tester See MA-15, " Anti-freeze Coolant Mixture Ratio " .
3 • Coolant level • Visual Coolant up to MAX level in reservoir tank and radiator
filler neck See
CO-35, " Inspection " .
4 • Radiator cap • Pressure tester See CO-40, " Checking Radiator Cap " .
ON* 2
5 • Coolant leaks • Visual No leaks See CO-35, " Inspection " .
ON* 2
6 • Thermostat • Touch the upper and
lower radiator hosesBoth hoses should be hot See
CO-45 , and
CO-47 ON*
1
7 • Cooling fan • CONSULT-III Operating See trouble diagnosis for
DTC P1217 (EC-1412, " Diagnosis Procedure " ).
OFF 8 • Combustion gas leak • Color checker chemical tester 4 Gas analyzerNegative —
ON* 3
9 • Coolant temperature
gauge • Visual Gauge less than 3/4 when
driving —
• Coolant overflow to res- ervoir tank • Visual No overflow during driving
and idling See
CO-35, " Changing
Engine Coolant " .

EC
NP
O
Wiring Diagram
INFOID:0000000004500305
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. B