2011 NISSAN LATIO engine coolant

P1217 ENGINE OVER TEMPERATUREEC-373
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Check the coolant level in the reservoir tank and radiator.
Allow engine to cool befo
re checking coolant level.
Is the coolant level in the reservoir tank and/or radiator below the
proper range?
YES >> Go to EC-373, "Diagnosis Procedure".
NO >> GO TO 2.
2.PERFORM COMPONENT FUNCTION CHECK-II
Confirm whether customer filled the coolant or not.
Did customer fill the coolant?
YES >> Go to EC-373, "Diagnosis Procedure".
NO >> GO TO 3.
3.PERFORM COMPONENT FUNCTION CHECK-III
With CONSULT-III
1. Turn ignition switch ON.
2. Perform “COOLING FAN” in “ACTIVE TEST” mode with CONSULT-III.
3. Make sure that cooling fan motor operates at each speed (LOW/HI).
Without CONSULT-III
Perform IPDM E/R auto active test and check cooling fan motor operation. Refer to PG-20, "
Auto Active Test".
Is the inspection result normal?
YES >> INSPECTION END
NO >> Go to EC-373, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005930043
1.CHECK COOLING FAN OPERATION
With CONSULT-III
1. Turn ignition switch ON.
2. Perform “COOLING FAN” in “ACTIVE TEST” mode with CONSULT-III.
3. Make sure that cooling fan motor operates at each speed (LOW/HI).
Without CONSULT-III
1. Perform IPDM E/R auto active test and c heck cooling fan motor operation. Refer to PG-20, "
Auto Active
Te s t".
2. Make sure that cooling fan motor operates at each speed (Low/High).
Is the inspection result normal?
YES >> GO TO 2.
NO >> Go to EC-427, "
Diagnosis Procedure".
2.CHECK COOLING SYSTEM FOR LEAK-I
Check cooling system for leak. Refer to CO-11, "
Inspection".
Is leakage detected?
YES >> GO TO 3.
NO >> GO TO 4.
3.CHECK COOLING SYSTEM FOR LEAK-II
Check the following for leak.
• Hose (Refer to CO-11, "
Inspection".)
• Radiator (Refer to CO-14, "
Checking Radiator".)
• Water pump (Refer to CO-21, "
Inspection".)
>> Repair or replace malfunctioning part.
SEF621W
Revision: May 2010 2011 Versa

EC-374
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P1217 ENGINE OVER TEMPERATURE
4.CHECK RADIATOR CAP
Check radiator cap. Refer to CO-14, "
Checking Radiator Cap".
Is the inspection result normal?
YES >> GO TO 5.
NO >> Replace radiator cap. Refer to CO-16, "
Component".
5.CHECK THERMOSTAT
Check thermostat. Refer to CO-23, "
Inspection".
Is the inspection result normal?
YES >> GO TO 6.
NO >> Replace thermostat. Refer to CO-22, "
Removal and Installation".
6.CHECK ENGINE COOLANT TEMPERATURE SENSOR
Refer to EC-169, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 7.
NO >> Replace engine coolant temperature sensor. Refer to CO-24, "
Exploded View".
7.CHECK MAIN 12 CAUSES
If the cause cannot be isolated, check the following.
*1: Turn the ignition switch ON.
*2: Engine running at 3,000 rpm for 10 minutes.
*3: Drive at 90 km/h (56 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-7, "
Troubleshooting Chart".
Engine Step Inspection item
EquipmentStandardReference page
OFF 1 • Blocked radiator • Blocked condenser
• Blocked radiator grille
• Blocked bumper • Visual
No blocking —
2 • Coolant mixture • Coolant tester MA-15, "
Anti-freeze Coolant Mixture Ratio"
3 • Coolant level• VisualCoolant up to MAX level in
reservoir tank and radiator
filler neck CO-11, "Inspection"
4 • Radiator cap
• Pressure testerCO-14, "Checking Radiator Cap"
ON*25 • Coolant leaks • VisualNo leaks CO-11, "Inspection"
ON*26 • Thermostat • Touch the upper and
lower radiator hoses Both hoses should be hot
CO-23, "Inspection"
ON*17 • Cooling fan motor • CONSULT-III OperatingEC-425, "Component
Function Check"
OFF 8 • Combustion gas leak • Color checker chemical
tester 4 Gas analyzerNegative —
ON*
39 • Coolant temperature gauge • Visual
Gauge less than 3/4 when
driving —
• Coolant overflow to res- ervoir tank • Visual
No overflow during driving
and idling CO-11, "
Inspection"
OFF*410 • Coolant return from res-
ervoir tank to radiator • Visual Should be initial level in
reservoir tank CO-25, "Inspection"
OFF 11 • Cylinder head
• Straight gauge feeler
gauge 0.1 mm (0.004 in) Maxi-
mum distortion (warping) EM-76, "Disassembly and
Assembly"
12 • Cylinder block and pis-
tons • Visual No scuffing on cylinder
walls or piston EM-97, "Inspection"
Revision: May 2010
2011 Versa

COOLING FANEC-425
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COOLING FAN
DescriptionINFOID:0000000005930111
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 MOTOR
Models without A/C
The cooling fan operates at each speed when the current flows in the cooling fan motor as per the following.
Models with A/C
The cooling fan operates at high (HI) speed when the current flows, and operates at low (LOW) speed when
cooling fan motor and the resistor are circuited in series.
Component Function CheckINFOID:0000000005930112
1.CHECK COOLING FAN FUNCTION
With CONSULT-III
1. Turn ignition switch ON.
2. Perform “COOLING FAN” in “ACTIVE TEST” mode with CONSULT-III.
3. Touch “LOW” and “Hi” on the CONSULT-III screen.
4. Check that cooling fan operates at each speed.
Without CONSULT-III
1. Perform IPDM E/R auto active test and c heck cooling fan motor operation. Refer to PG-20, "
Auto Active
Te s t".
2. Check that cooling fan operates at each speed.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Refer to EC-427, "
Diagnosis Procedure".
Cooling fan Speed Cooling fan motor terminals
(+) (–)
Low (LOW) 1
3 and 4
2 3 and 4
1 and 2 3
1 and 2 4
High (HI) 1 and 23 and 4
Revision: May 2010 2011 Versa

EC-466
< ECU DIAGNOSIS >[HR16DE]
ECM
*: Accelerator pedal position sensor 2 signal and throttle position sensor 2 signal are converted by ECM internally. Thus, they
differ from
ECM terminals voltage signal.
TERMINAL LAYOUT
PHYSICAL VALUES
NOTE:
• ECM is located in the engine room left side near battery.
• 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 when measuring input/output voltage. Doi ng so may result in dam-
age to the ECMs transistor. Use a ground ot her than ECM terminals, such as the ground.
COOLING FAN• Engine: After warning up, idle the
engine
• Air conditioner switch: OFF Engine coolant temperature is 98
°C
(208 °F) or less OFF
Engine coolant temperature is between
98 °C (208 °F) and 99 °C (210 °F) LOW
Engine coolant temperature is 100 °C
(212 °F) or more HIGH
HO2S2 HTR (B1) • Engine speed: Below 3,600 rpm after the following conditions are met.
- Engine: After warming up
- Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at
idle for 1 minute under no load ON
VEHICLE SPEED • Turn drive wheels and compare CONSULT-III value with the speedometer in-
dication. Almost the same speed as
the speedometer indication
IDL A/V LEARN • Engine: running Idle air volume learning has not been per-
formed yet.
YET
Idle air volume learning has already been
performed successfully. CMPLT
TRVL AFTER MIL • Ignition switch: ON Vehicle has traveled after MIL has turned
ON.0 - 65,535 km
(0 - 40,723 miles)
A/F S1 HTR (B1) • Engine: After warming up, idle the engine 40 - 100%
AC PRESS SEN • Engine: Idle
• Both A/C switch and blower fan switch: ON (Compressor operates)
1.0 - 4.0 V
HO2 S2 DIAG2(B1) NOTE:
The item is indicated, but not used. —
A/F SEN1
DIAG2(B1) NOTE:
The item is indicated, but not used.
—
Monitor Item
Condition Values/Status
PBIA9221J
Revision: May 2010 2011 Versa

ECM
EC-469
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L Fuel injector No. 4
Fuel injector No. 3
Fuel injector No. 2
Fuel injector No. 1 [Engine is running]
•
Warm-up condition
• Idle speed NOTE:
The pulse cycle changes depending on rpm
at idle. BATTERY VOLTAGE
(11 - 14 V)
[Engine is running]
• Warm-up condition
• Engine speed: 2,000 rpm BATTERY VOLTAGE
(11 - 14 V)
28 W EVAP canister vent control
valve [Ignition switch: ON]
BATTERY VOLTAGE
(11 - 14 V)
32 P ECM relay
(Self shut-off) [Engine is running]
[Ignition switch: OFF]
• For a few seconds after turning ignition
switch OFF 0 - 1.0 V
[Ignition switch: OFF]
• More than a few seconds after turning igni- tion switch OFF BATTERY VOLTAGE
(11 - 14 V)
33 LG Throttle position sensor 1 [Ignition switch: ON]
• Engine stopped
• Selector lever position
: D (A/T), 1st (M/T)
• Accelerator pedal: Fully released More than 0.36 V
[Ignition switch: ON]
• Engine stopped
• Selector lever position : D (A/T), 1st (M/T)
• Accelerator pedal: Fully depressed Less than 4.75 V
34 O Throttle position sensor 2 [Ignition switch: ON]
• Engine stopped
• Selector lever position
: D (A/T), 1st (M/T)
• Accelerator pedal: Fully released Less than 4.75 V
[Ignition switch: ON]
• Engine stopped
• Selector lever position : D (A/T), 1st (M/T)
• Accelerator pedal: Fully depressed More than 0.36 V
36 Y Sensor ground
(Throttle position sensor) [Engine is running]
•
Warm-up condition
• Idle speed Approximately 0 V
37 W Knock sensor [Engine is running]
• Idle speed
Approximately 2.5 V
38 P Engine coolant temperature
sensor
[Engine is running] Approximately 0 - 4.8 V
Output voltage varies with en-
gine coolant temperature.
40 — Sensor ground
(Knock sensor) [Engine is running]
•
Warm-up condition
• Idle speed Approximately 0 V
TERMI-
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NO. WIRE
COLOR ITEM
CONDITION DATA (DC Voltage)PBIB0529E
PBIA4943J
Revision: May 2010 2011 Versa

EC-470
< ECU DIAGNOSIS >[HR16DE]
ECM
41 GR Refrigerant pressure sensor[Engine is running]
•
Warm-up condition
• Both A/C switch and blower fan switch: ON
(Compressor operates.) 1.0 - 4.0 V
42 V EVAP control system pres-
sure sensor [Ignition switch: ON]
Approximately 1.8 - 4.8 V
43 P Fuel tank temperature sen-
sor [Engine is running] Approximately 0 - 4.8 V
Output voltage varies with fuel
tank temperature
44 B Sensor ground
(Engine coolant temperature
sensor) [Engine is running]
•
Warm-up condition
• Idle speed Approximately 0 V
45 G Mass air flow sensor [Engine is running]
•
Warm-up condition
• Idle speed 0.9 - 1.3 V
[Engine is running]
• Warm-up condition
• Engine speed: 2,500 rpm 1.4 - 1.9 V
46 V Intake air temperature
sensor
[Engine is running] Approximately 0 - 4.8 V
Output voltage varies with intake
air temperature.
48 BR Sensor ground
(Refrigerant pressure sen-
sor) [Engine is running]
•
Warm-up condition
• Idle speed Approximately 0 V
49 W A/F sensor 1 [Engine is running]
•
Warm-up condition
• Engine speed: 2,000 rpm Approximately 1.8 V
Output voltage varies with air fuel
ratio.
50 W Heated oxygen sensor 2 [Engine is running]
• Revving engine from idle to 3,000 rpm
quickly after the following conditions are
met.
- Engine: After warming up
- Keeping the engine speed between 3,500 and 4,000 rpm for 1 minute and at idle for 1
minute under no load. 0 - 1.0 V
51 O Sensor ground
(EVAP control system pres-
sure sensor) [Engine is running]
•
Warm-up condition
• Idle speed Approximately 0 V
52 LG Sensor ground
(Mass air flow sensor) [Engine is running]
•
Warm-up condition
• Idle speed Approximately 0 V
53 B A/F sensor 1 [Ignition switch: ON]Approximately 2.2 V
55 O Sensor ground
(Intake air temperature sen-
sor) [Engine is running]
•
Warm-up condition
• Idle speed Approximately 0 V
59 O Sensor ground
(He
a
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d oxygen sensor 2) [Engine is running]
•
Warm-up condition
• Idle speed Approximately 0 V
TERMI-
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NO. WIRE
COLOR ITEM
CONDITION DATA (DC Voltage)
Revision: May 2010 2011 Versa

EC-476
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ECM
DTC RELATED ITEM
Detected itemsEngine operating condition in
fail-safe mode Remarks
Malfunction indicator
lamp circuit Engine speed will not rise
more than 2,500 rpm due to
the fuel cut When there is an open circuit on MIL circuit, the ECM cannot warn the driver by
lighting up MIL when there is malfunction on engine control system.
Therefore, when electrical controlled throttle and part of ECM related diagnoses
are continuously detected as NG for 5 trips, ECM warns the driver that engine
control system malfunctions and MIL circuit is open by means of operating fail-
safe function.
The fail-safe function also operates when above diagnoses except MIL circuit
are detected and demands the driver to repair the malfunction.
DTC No. Detected items
Engine operating condition in fail-safe mode
P0011 Intake valve timing control The signal is not energized to the intake valve timing control solenoid valve and the valve control does not function.
P0102
P0103 Mass air flow sensor circuit Engine speed will not rise more than 2,400 rpm due to the fuel cut.
P0117
P0118 Engine coolant tempera-
ture sensor circuit Engine coolant temperature will be determined by ECM based on the following condition.
CONSULT-III displays the engine coolant temperature decided by ECM.
Condition Engine coolant temperature decided
(CONSULT-III display)
Just as ignition switch is turned ON
or START 40
°C (104 °F)
More than approx. 4 minutes after
engine starting 80
°C (176 °F)
Except as shown above 40 - 80
°C (104 - 176 °F)
(Depends on the time)
When the fail-safe system for engine coolant temperature sensor is activated, the cooling
fan operates while engine is running.
P0122
P0123
P0222
P0223
P2135 Throttle position sensor The ECM controls the electric throttle control actuator in regulating the throttle opening in
order for the idle position to be within +10 degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal
condition.
So, the acceleration will be poor.
P0643 Sensor power supply ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring.
P0605 ECM (When ECM calculation function is malfunctioning:)
ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P1805 Brake switch ECM controls the electric throttle control actuator by regulating the throttle opening to a
small range.
Therefore, acceleration will be poor.
Vehicle condition Driving condition
When engine is idling Normal
When accelerating Poor acceleration
P2100
P2103 Throttle control motor relay ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P2101 Electric throttle control function ECM stops the electric throttle control actuator control, throttle valve is maintained at a
fixed opening (approx. 5 degrees) by the return spring.
P2118 Throttle control motor ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return spring.
Revision: May 2010 2011 Versa

ECM
EC-477
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DTC Inspection Priority ChartINFOID:0000000005930153
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority
chart.
P2119 Electric thro
ttle control ac-
tuator (When electric throttle control actuator does not function properly due to the return spring
malfunction:)
ECM controls the electric throttle actuator by regulating the throttle opening around the
idle position. The engine speed will not rise more than 2,000 rpm.
(When throttle valve opening angle in fail-safe mode is not in specified range:)
ECM controls the electric throttle control actuator by regulating the throttle opening to 20
degrees or less.
(When ECM detects the throttle valve is stuck open:)
While the vehicle is driving, it slows down gradually by fuel cut. After the vehicle stops, the
engine stalls.
The engine can restart in N or P (A/T), Neutral (M/T) position, and engine speed will not
exceed 1,000 rpm or more.
P2122
P2123
P2127
P2128
P2138 Accelerator pedal position
sensor
The ECM controls the electric throttle control actuator in regulating the throttle opening in
order for the idle position to be within +10 degrees.
The ECM regulates the opening speed of the throttle valve to be slower than the normal
condition.
So, the acceleration will be poor.
DTC No. Detected items
Engine operating condition in fail-safe mode
PriorityDetected items (DTC)
1 • U0101 U0140 U1001 CAN communication line • P0101 P0102 P0103 Mass air flow sensor
• P0112 P0113 P0127 Intake air temperature sensor
• P0116 P0117 P0118 P0125 Engine coolant temperature sensor
• P0122 P0123 P0222 P0223 P1225 P1226 P2135 Throttle position sensor
• P0128 Thermostat function
• P0181 P0182 P0183 Fuel tank temperature sensor
• P0327 P0328 Knock sensor
• P0335 Crankshaft position sensor (POS)
• P0340 Camshaft position sensor (PHASE)
• P0460 P0461 P0462 P0463 Fuel level sensor
• P0500 Vehicle speed sensor
• P0605 P0607 ECM
• P0643 Sensor power supply
• P0705 Transmission range switch
• P0850 Park/neutral position (PNP) switch
• P1610 - P1615 NATS
• P2122 P2123 P2127 P2128 P2138 Accelerator pedal position sensor
Revision: May 2010 2011 Versa