2007 NISSAN LATIO coolant

EC-446Revision: June 2006
DTC P1217 ENGINE OVER TEMPERATURE
2007 Versa
4. Perform “COOLING FAN” in “ACTIVE TEST” mode with CON-
SULT-II.
5. If the results are NG, go to EC-450, "
PROCEDURE FOR MOD-
ELS WITH A/C" or EC-454, "PROCEDURE FOR MODELS
WITHOUT A/C" .
WITH GST
Models with A/C
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-450,
"PROCEDURE FOR MODELS WITH A/C" .
2. Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go to EC-450,
"PROCEDURE FOR MODELS WITH A/C" .
3. Start engine.
CAUTION:
Be careful not to overheat engine.
4. Set temperature control switch to full cold position.
5. Turn air conditioner switch ON.
6. Turn blower fan switch ON.
7. Run engine at idle for a few minutes with air conditioner operating.
CAUTION:
Be careful not to overheat engine.
8. Make sure that cooling fans operates at low speed.
If NG, go to EC-450, "
PROCEDURE FOR MODELS WITH A/C" .
If OK, go to the following step.
9. Turn ignition switch OFF.
10. Turn air conditioner switch and blower fan switch OFF.
11. Disconnect engine coolant temperature sensor harness connec-
tor.
12. Connect 150Ω resistor to engine coolant temperature sensor
harness connector.
13. Restart engine and make sure that cooling fan operates at
higher speed than low speed.
CAUTION:
Be careful not to overheat engine.
14. If NG, go to EC-450, "
PROCEDURE FOR MODELS WITH A/C" .
SEF 6 46 X
SEF 6 21 W
MBIB0651E
SEF 0 23 R

DTC P1217 ENGINE OVER TEMPERATURE
EC-447
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Revision: June 20062007 Versa
Models without A/C
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-454,
"PROCEDURE FOR MODELS WITHOUT A/C" .
2. Confirm whether customer filled the coolant or not. If customer
filled the coolant, skip the following steps and go to EC-454,
"PROCEDURE FOR MODELS WITHOUT A/C" .
3. Perform IPDM E/R auto active test and check cooling fan motor
operation, refer to PG-21, "
Auto Active Test" .
4. Make sure that cooling fan operate at low speed.
If NG, go to EC-454, "
PROCEDURE FOR MODELS WITHOUT
A/C" .
5. Turn ignition switch OFF.
6. Disconnect engine coolant temperature sensor harness connector.
7. Connect 150Ω resistor to engine coolant temperature sensor harness connector.
8. Start engine and make that cooling fan operates. Be careful not
to overheat engine.
9. If NG, go to EC-454, "
PROCEDURE FOR MODELS WITHOUT
A/C" .
SEF 6 21 W
SEF 0 23 R

DTC P1217 ENGINE OVER TEMPERATURE
EC-451
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Revision: June 20062007 Versa
4. CHECK COOLING FAN LOW SPEED OPERATION
Without CONSULT-II
1. Start engine and let it idle.
2. Turn air conditioner switch ON.
3. Turn blower fan switch ON.
4. Make sure that cooling fan operate at low speed.
OK or NG
OK >> GO TO 5.
NG >> Check cooling fan low speed control circuit. (Go to EC-
452, "PROCEDURE A" .)
5. CHECK COOLING FAN HIGH SPEED OPERATION
Without CONSULT-II
1. Turn ignition switch OFF.
2. Turn air conditioner switch and blower fan switch OFF.
3. Disconnect engine coolant temperature sensor harness connector.
4. Connect 150Ω resistor to engine coolant temperature sensor harness connector.
5. Restart engine and make sure that cooling fan operate at higher
speed than low speed.
OK or NG
OK >> GO TO 6.
NG >> Check cooling fan high speed control circuit. (Go to EC-
452, "PROCEDURE A" .)
6. CHECK COOLING SYSTEM FOR LEAK
Refer to CO-8, "
ENGINE COOLANT" .
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.
7. DETECT MALFUNCTIONING PART
Check the following for leak.

Hose

Radiator

Water pump (Refer to CO-17, "WATER PUMP" .)
>> Repair or replace.
MBIB0651E
SEF 0 23 R

EC-452Revision: June 2006
DTC P1217 ENGINE OVER TEMPERATURE
2007 Versa
8. CHECK RADIATOR CAP
Refer to CO-11, "
RADIATOR" .
OK or NG
OK >> GO TO 9.
NG >> Replace radiator cap.
9. CHECK COMPONENT PARTS
Check the following;.

Thermostat. (Refer to CO-17, "WATER PUMP" .)

Water control valve. (Refer to CO-20, "WATER OUTLET AND WATER CONTROL VALVE" .)

Engine coolant temperature sensor. (Refer to EC-205, "Component Inspection" .)
OK or NG
OK >> GO TO 10.
NG >> Replace malfunctioning component.
10. CHECK MAIN 13 CAUSES
If the cause cannot be isolated, go to EC-458, "
Main 13 Causes of Overheating" .
>>INSPECTION END
PROCEDURE A
1. CHECK POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connector E44.
3. Check voltage between IPDM E/R terminal 22 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2. 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 or short to power in harness or connectors. Voltage: Battery voltage
PBIB2607E

DTC P1217 ENGINE OVER TEMPERATURE
EC-455
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5. CHECK COOLING FAN HIGH SPEED OPERATION
Without CONSULT-II
1. Turn ignition switch OFF.
2. Disconnect engine coolant temperature sensor harness connector.
3. Connect 150Ω resistor to engine coolant temperature sensor harness connector.
4. Restart engine and make sure that cooling fan operates at
higher speed than low speed.
OK or NG
OK >> GO TO 6.
NG >> Check cooling fan high speed control circuit. (Go to EC-
452, "PROCEDURE A" )
6. CHECK COOLING SYSTEM FOR LEAK
Refer to CO-8, "
ENGINE COOLANT" .
OK or NG
OK >> GO TO 8.
NG >> GO TO 7.
7. DETECT MALFUNCTIONING PART
Check the following for leak.

Hose

Radiator

Water pump (Refer to CO-17, "WATER PUMP" .)
>> Repair or replace.
8. CHECK RADIATOR CAP
Refer to CO-11, "
RADIATOR" .
OK or NG
OK >> GO TO 9.
NG >> Replace radiator cap.
9. CHECK THERMOSTAT
Refer to CO-18, "
THERMOSTAT" .
OK or NG
OK >> GO TO 10.
NG >> Replace thermostat.
10. CHECK ENGINE COOLANT TEMPERATURE SENSOR
Refer to EC-205, "
Component Inspection" .
OK or NG
OK >> GO TO 11.
NG >> Replace engine coolant temperature sensor.
SEF 0 23 R

EC-458Revision: June 2006
DTC P1217 ENGINE OVER TEMPERATURE
2007 Versa
Main 13 Causes of OverheatingUBS00QKZ
*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 information, refer to CO-5, "
OVERHEATING CAUSE ANALYSIS" . Engine Step Inspection item Equipment Standard Reference page
OFF 1

Blocked radiator

Blocked condenser

Blocked radiator grille

Blocked bumper

Visual No blocking —
2

Coolant mixture
Coolant tester 50 - 50% coolant mixture See MA-12, "Anti-freeze
Coolant Mixture Ratio" .
3

Coolant level
Visual Coolant up to MAX level
in reservoir tank and radi-
ator filler neckSee CO-8, "LEVEL
CHECK" .
4

Radiator cap
Pressure tester 59 - 98 kPa
(0.6 - 1.0 kg/cm2 , 9 - 14
psi) (Limit)See CO-13, "
Checking
Radiator Cap" .
ON*
25
Coolant leaks
Visual No leaks See CO-8, "CHECKING
COOLING SYSTEM FOR
LEAKS" .
ON*
26
Thermostat
Touch the upper and
lower radiator hosesBoth hoses should be hot See CO-18, "THERMO-
STAT" , and CO-11,
"RADIATOR"
ON*17
Cooling fan
CONSULT-II Operating See trouble diagnosis for
DTC P1217 (EC-450,
"Diagnostic Procedure" ).
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
reservoir tank
Visual No overflow during driving
and idlingSee CO-8, "Changing
Engine Coolant" .
OFF*
410
Coolant return from
reservoir tank to radia-
tor
Visual Should be initial level in
reservoir tankSee CO-8, "LEVEL
CHECK" .
OFF 11

Water control valve
Remove and inspect
the valveWithin the specified valueSee CO-21, "Water Con-
trol Valve"
OFF 12
Cylinder head
Straight gauge feeler
gauge0.1 mm (0.004 in) Maxi-
mum distortion (warping)See EM-62, "CYLINDER
HEAD" .
13

Cylinder block and pis-
tons
Visual No scuffing on cylinder
walls or pistonSee EM-77, "CYLINDER
BLOCK" .

EC-464Revision: June 2006
DTC P1421 COLD START CONTROL
2007 Versa
DTC P1421 COLD START CONTROLPFP:23710
DescriptionUBS00QLB
ECM controls ignition timing and engine idle speed when engine is started with prewarming up condition.
This control promotes the activation of three way catalyst by heating the catalyst and reduces emissions.
On Board Diagnosis LogicUBS00QLC
DTC Confirmation ProcedureUBS00QLD
NOTE:

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait
at least 10 seconds before conducting the next test.

If DTC P1421 is displayed with other DTC, first perform the trouble diagnosis for other DTC.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11V at idle.
WITH CONSULT-II
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Select “DATA MONITOR” mode with CONSULT-II.
4. Check that the “COOLAN TEMP/S” indication is between 4°C
(39°F) and 36°C (97°F).
If "COOLAN TEMP/S" indication is within the specified value, go
to the following step.
If "COOLANT TEMP/S" indication is out of the specified value,
cool engine down or warm engine up and go to step 1.
5. Start engine and let it idle for 5 minutes.
6. If 1st trip DTC is detected, go to EC-464, "
Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
Diagnostic ProcedureUBS00QLE
1. PERFORM IDLE AIR VOLUME LEARNING
Perform EC-78, "
Idle Air Volume Learning" .
Is Idle Air Volume Learning carried out successfully?
Ye s o r N o
Yes >> GO TO 2.
No >> Follow the instruction of Idle Air Volume Learning.
2. CHECK INTAKE SYSTEM
Check for the cause of intake air volume lacking. Refer to the following.

Crushed intake air passage

Intake air passage clogging
OK or NG
OK >> GO TO 3.
NG >> Repair or replace malfunctioning part
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1421
1421Cold start emission reduction
strategy monitoringECM does not control ignition timing and engine
idle speed properly when engine is started with
prewarming up condition.

Lack of intake air volume

Fuel injection system

ECM
SEF 1 74 Y

EC-594Revision: June 2006
SERVICE DATA AND SPECIFICATIONS (SDS)
2007 Versa
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
Fuel PressureUBS00PUA
Idle Speed and Ignition TimingUBS00PUB
*: Under the following conditions:

Air conditioner switch: OFF

Electric load: OFF (Lights, heater fan & rear window defogger)

Steering wheel: Kept in straight-ahead position
Calculated Load ValueUBS00PUC
Mass Air Flow SensorUBS00PUD
*: Engine is warmed up to normal operating temperature and running under no load.
Intake Air Temperature SensorUBS00PUE
Engine Coolant Temperature SensorUBS00PUF
Air Fuel Ratio (A/F) Sensor 1 HeaterUBS00PUG
Heated Oxygen sensor 2 HeaterUBS00PUH
Crankshaft Position Sensor (POS)UBS00PUI
Refer to EC-326, "Component Inspection" .
Fuel pressure at idle
Approximately 350 kPa (3.57 kg/cm2 , 51 psi)
Target idle speedA/T No load* (in P or N position)
700 ± 50 rpm CVT No load* (In P or N position)
M/T No load* (in Neutral position)
Air conditioner: ONA/T In P or N position
700 rpm or more CVT In P or N position
M/T In Neutral position
Ignition timingA/T In P or N position
13 ± 5° BTDC CVT In P or N position
M/T In Neutral position
Calculated load value% (Using CONSULT-II or GST)
At idle10 - 35
At 2,500 rpm10 - 35
Supply voltageBattery voltage (11 - 14V)
Output voltage at idle1.0 - 1.3*V
Mass air flow (Using CONSULT-II or GST)1.0 - 4.0 g·m/sec at idle*
2.0 - 10.0 g·m/sec at 2,500 rpm*
Temperature °C (°F) Resistance kΩ
25 (77)1.800 - 2.200
Temperature °C (°F) Resistance kΩ
20 (68)2.1 - 2.9
50 (122)0.68 - 1.00
90 (194)0.236 - 0.260
Resistance [at 25°C (77°F)] 1.8 - 2.44Ω
Resistance [at 25°C (77°F)] 3.4 - 4.4Ω