2009 NISSAN LATIO service

DTC P0850 PNP SWITCH
EC-1405
< SERVICE INFOMATION >
[MR TYPE 2] C
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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.

EC-1408< SERVICE INFOMATION >
[MR TYPE 2]
DTC P1217 ENGINE
OVER TEMPERATURE
DTC P1217 ENGINE OVER TEMPERATURE
System Description INFOID:0000000004500279
SYSTEM DESCRIPTION
NOTE:
• If DTC P1217 is displayed with DTC UXXXX, first perform the tr ouble diagnosis for DTC UXXXX.
• If DTC P1217 is displayed with DTC P0607, first pe rform the trouble diagnosis for DTC P0607. Refer
to EC-1395 .
Cooling Fan Control
*1: The ECM determines the start signal status by the signals of engine speed and battery voltage.
*2: This signal is sent to ECM through CAN communication line.
The ECM controls the cooling fan corresponding to the vehicle speed, engine coolant temperature, refrigerant
pressure, and air conditioner ON signal. The contro l system has 3-step control [HIGH/LOW/OFF].
Cooling Fan Operation
Models with A/C
Models without A/C Sensor Input Signal to ECM ECM function Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE) Engine speed*
1
Cooling fan
control IPDM E/R
(Cooling fan relays)
Battery
Battery voltage*1
ABS actuator and electric unit (control unit)
Vehicle speed*2
Combination meter
Engine coolant temperature sensor Engine coolant temperature
Air conditioner switch Air conditioner ON signal*2
Refrigerant pressure sensor Refrigerant pressure PBIB2483E
PBIB3335E

EC-1410< SERVICE INFOMATION >
[MR TYPE 2]
DTC P1217 ENGINE
OVER TEMPERATURE
Never remove the radiator cap when the engine is hot. Serious burns could be caused by high pres-
sure fluid escaping from the reser voir tank or the radiator.
Wrap a thick cloth around cap. Carefully remove the cap by turning it a quarter turn to allow built-up
pressure to escape. Then turn the cap all the way off.
WITH CONSULT-III
1. Check the coolant level in the reservoir tank and radiator. Allow engine to cool before checking coolant level.
If the coolant level in the reservoir tank and/or radiator is below
the proper range, skip the following steps and go to EC-1412," Diagnosis Procedure " or
EC-1412, " Diagnosis Procedure " .
2. Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go to EC-1412," Diagnosis Procedure " or
EC-1412, " Diagnosis Procedure " .
3. Turn ignition switch ON.
4. Perform “COOLING FAN” in “ACTIVE TEST” mode with CON- SULT-III.
5. If the results are NG, go to EC-1412, " Diagnosis Procedure " or
EC-1412, " Diagnosis Procedure " .
WITH GST
1. Check the coolant level in the reservoir tank and radiator. Allow engine to cool before checking coolant level.
If the coolant level in the reservoir tank and/or radiator is below
the proper range, skip the following steps and go to EC-1412," Diagnosis Procedure " .
2. Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go to EC-1412," Diagnosis Procedure " .
3. Perform IPDM/ER auto active te st and check cooling fan motor
operation. Refer to PG-19, " Auto Active Test " .
4. If NG, go to EC-1412, " Diagnosis Procedure " . SEF621W
SEF621W

DTC P1217 ENGINE OVER TEMPERATURE
EC-1411
< SERVICE INFOMATION >
[MR TYPE 2] C
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Wiring Diagram
INFOID:0000000004500283 BBWA2997E

EC-1412< SERVICE INFOMATION >
[MR TYPE 2]
DTC P1217 ENGINE
OVER TEMPERATURE
Diagnosis Procedure INFOID:00000000045002841.
INSPECTION START
Do you have CONSULT-III?
Yes or No Yes >> GO TO 2.
No >> GO TO 3. BBWA3001E

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-1416< SERVICE INFOMATION >
[MR TYPE 2]
DTC P1217 ENGINE
OVER TEMPERATURE
*1: Turn the ignition switch ON.
*2: Engine running at 3,000 rpm for 10 minutes.
*3: Drive at 90 km/h (55 MPH) for 30 minutes and then let idle for 10 minutes.
*4: After 60 minutes of cool down time.
For more informat ion, refer to CO-32 .
Component Inspection INFOID:0000000004500286
COOLING FAN MOTOR
Model with A/C
1. Disconnect cooling fan motor harness connectors.
2. Supply cooling fan motor terminals with battery voltage and check operation.
Cooling fan motor should operate.
If NG, replace cooling fan motor.
Models without A/C
1. Disconnect cooling fan motor harness connectors.
2. Supply cooling fan motor terminals with battery voltage and check operation.
Cooling fan motor should operate.
If NG, replace cooling fan motor. OFF*
4
10 • Coolant return from res-
ervoir tank to radiator • Visual Should be initial level in
reservoir tank See
CO-35, " Inspection " .
OFF 11 • Water control valve • Remove and inspect
the valve Within the specified value See
CO-47, " Removal
and Installation "
OFF 12 • Cylinder head • Straight gauge feeler
gauge0.1 mm (0.004 in) Maxi-
mum distortion (warping) See
EM-185 .
13 • Cylinder block and pis- tons • Visual No scuffing on cylinder
walls or piston See
EM-199 .
Engine Step Inspection item Equipment Standard Reference Terminals
(+) (-)
Cooling fan motor 1 2 SEF888V
Speed
terminals
(+) ( −)
Cooling fan motor Low 1 4
2 3
High 1 and 2 3 and 4 SEF734W

DTC P1225 TP SENSOR
EC-1417
< SERVICE INFOMATION >
[MR TYPE 2] C
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DTC P1225 TP SENSOR
Component Description INFOID:0000000004500287
Electric throttle control actuator consists of throttle control motor,
throttle position sensor, etc. The throttle position sensor responds to
the throttle valve movement.
The throttle position sensor has two sensors. These sensors are a
kind of potentiometers which transform the throttle valve position into
output voltage, and emit the voltage signal to the ECM. In addition,
these sensors detect the opening and closing speed of the throttle
valve and feed the voltage signals to the ECM. The ECM judges the
current opening angle of the throttle valve from these signals and the
ECM controls the throttle control motor to make the throttle valve
opening angle properly in response to driving condition.
On Board Diagnosis Logic INFOID:0000000004500288
The MIL will not light up for this diagnosis.
DTC Confirmation Procedure INFOID:0000000004500289
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. Turn ignition switch ON.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Check 1st trip DTC.
5. If 1st trip DTC is detected, go to EC-1417, " Diagnosis Procedure " .
Diagnosis Procedure INFOID:00000000045002901.
CHECK ELECTRIC THROTTLE CONTROL ACTUATOR VISUALLY
1. Turn ignition switch OFF.
2. Remove the intake air duct.
3. Check if foreign matter is c aught between the throttle valve (1)
and the housing.
- : Vehicle front
OK or NG OK >> GO TO 2.
NG >> Remove the foreign matter and clean the electric throttle
control actuator inside. 2.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace the electric throttle control actuator.
2. Perform EC-1084, " Throttle Valve Closed Position Learning " .
3. Perform EC-1084, " Idle Air Volume Learning " . PBIB0145E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1225
1225 Closed throttle position
learning performance Closed throttle position learning value is exces-
sively low. • Electric throttle control actuator
(TP sensor 1 and 2) BBIA0711E