CO-34
< SERVICE INFORMATION >[MR18DE]
OVERHEATING CAUSE ANALYSIS
Except cool-
ing system
parts mal-
function—
Overload on engine Abusive driving
High engine rpm under no
load
Driving in low gear for ex-
tended time
Driving at extremely high
speed
Power train system mal-
function
—
Installed improper size
wheels and tires
Dragging brakes
Improper ignition timing
Blocked or restricted air
flow Blocked bumper
Installed front bumper fas-
cia cover
—
Blocked radiator grille Mud contamination or paper
clogging
Blocked radiator Blocked air flow
Blocked condenser
Installed large fog lamp
Symptom
Check items
Revision: January 20102010 Versa
CO-46
< SERVICE INFORMATION >[MR18DE]
THERMOSTAT
THERMOSTAT
ComponentINFOID:0000000005398224
Removal and InstallationINFOID:0000000005398225
REMOVAL
1. Drain engine coolant from radiator. Refer to
CO-36, "Changing Engine Coolant".
CAUTION:
• Perform this step when engine is cold.
• Never spill engine coolant on drive belt.
2. Remove the air duct (inlet). Refer to EM-135, "
Component".
3. Remove the radiator hose (lower) from the engine. Refer to CO-40, "
Component".
4. Remove water inlet.
5. Remove thermostat.
6. Remove water pump, if necessary. Refer to CO-44
.
7. Remove thermostat housing, if necessary.
INSPECTION AFTER REMOVAL
• Place a thread (A) so that it is caught in the valves of thermostat (1). Immerse fully in a container (B) filled with water. Heat while
stirring.
• The valve opening temperature is the temperature at which the
valve opens and falls from the thread.
• Continue heating. Check the full-open valve lift amount. NOTE:
The full-open valve lift amount standard temperature for the ther-
mostat is the reference value.
• After checking the full-open valve lift amount, lower the water tem-
perature and check the valve closing temperature.
• If out of the specification, replace thermostat.
1. Gasket 2. Thermostat housing3. Clamp
4. Water hose 5. Rubber ring6. Thermostat
7. Water inlet 8. Clamp9. Radiator hose (lower)
A. CVT models B. To CVT fluid coolerC. To radiator
JPBIA2884GB
Standard : Refer to CO-51, "Standard and Limit"
PBIC3314J
Revision: January 20102010 Versa
WATER OUTLET AND WATER CONTROL VALVECO-49
< SERVICE INFORMATION > [MR18DE]
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• Place a thread (A) so that it is caught in the valves of water control
valve (1). Immerse fully in a container (B) filled with water. Heat
while stirring.
• The valve opening temperature is the temperature at which the valve opens and falls from the thread.
• Continue heating. Check the full-open valve lift amount.
NOTE:
The full-open valve lift amount standard temperature for water con-
trol valve is the reference value.
• After checking the full-open valve lift amount, lower the water tem- perature and check the valve closing temperature.
• If out of the specification, replace water control valve.
INSTALLATION
Installation is in the reverse order of removal.
• Use the following procedure to install the water control valve.
- Install water control valve making sure rubber ring (1) groove fits
securely to water control valve flange (A).
CAUTION:
Replace the rubber ring with a new one.
- While the mark (A) points to up, install water control valve (2) with frame center (B) facing straight upward into water outlet (1).
• Use the following procedure to install the water outlet.
- Install the water outlet to the cylinder head without disp lacing the water control valve from the valve position.
• Use the following procedure to install the water hoses. Standard : Refer to CO-51, "
Standard and Limit"
PBIC3314J
PBIC3317J
PBIC4700E
Revision: January 20102010 Versa
EC-12
DTC P0605 ECM ..............................................893
Component Description ....................................... ..893
On Board Diagnosis Logic .....................................893
DTC Confirmation Procedure ................................893
Diagnosis Procedure .............................................894
DTC P0607 ECM ..............................................895
Description ........................................................... ..895
On Board Diagnosis Logic .....................................895
DTC Confirmation Procedure ................................895
Diagnosis Procedure .............................................895
DTC P0643 SENSOR POWER SUPPLY ........896
On Board Diagnosis Logic ................................... ..896
DTC Confirmation Procedure ................................896
Wiring Diagram ......................................................897
Diagnosis Procedure .............................................898
DTC P0850 PNP SWITCH ...............................901
Component Description ....................................... ..901
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... ..
901
On Board Diagnosis Logic .....................................901
DTC Confirmation Procedure ................................901
Overall Function Check .........................................902
Wiring Diagram ......................................................903
Diagnosis Procedure .............................................904
DTC P1148 CLOSED LOOP CONTROL .........907
On Board Diagnosis Logic ................................... ..907
DTC P1211 TCS CONTROL UNIT ..................908
Description ........................................................... ..908
On Board Diagnosis Logic .....................................908
DTC Confirmation Procedure ................................908
Diagnosis Procedure .............................................908
DTC P1212 TCS COMMUNICATION LINE .....909
Description ........................................................... ..909
On Board Diagnosis Logic .....................................909
DTC Confirmation Procedure ................................909
Diagnosis Procedure .............................................909
DTC P1217 ENGINE OVER TEMPERATURE .910
System Description .............................................. ..910
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... ..
911
On Board Diagnosis Logic .....................................911
Overall Function Check .........................................911
Wiring Diagram ......................................................913
Diagnosis Procedure .............................................914
Main 13 Causes of Overheating ............................917
Component Inspection ...........................................918
DTC P1225 TP SENSOR .................................919
Component Description ....................................... ..919
On Board Diagnosis Logic .....................................919
DTC Confirmation Procedure ................................919
Diagnosis Procedure .............................................919
Removal and Installation .......................................920
DTC P1226 TP SENSOR ..................................921
Component Description ....................................... .921
On Board Diagnosis Logic ....................................921
DTC Confirmation Procedure ................................921
Diagnosis Procedure .............................................921
Removal and Installation .......................................922
DTC P1421 COLD START CONTROL .......... ..923
Description ........................................................... .923
On Board Diagnosis Logic ....................................923
DTC Confirmation Procedure ................................923
Diagnosis Procedure .............................................923
DTC P1564 ASCD STEERING SWITCH ..........925
Component Description ....................................... .925
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... .
925
On Board Diagnosis Logic ....................................925
DTC Confirmation Procedure ................................926
Wiring Diagram .....................................................927
Diagnosis Procedure .............................................928
Component Inspection ..........................................930
DTC P1572 ASCD BRAKE SWITCH ...............931
Component Description ....................................... .931
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... .
931
On Board Diagnosis Logic ....................................931
DTC Confirmation Procedure ................................932
Wiring Diagram .....................................................933
Diagnosis Procedure .............................................934
Component Inspection ..........................................938
DTC P1574 ASCD VEHICLE SPEED SEN-
SOR ..................................................................
940
Component Description ....................................... .940
On Board Diagnosis Logic ....................................940
DTC Confirmation Procedure ................................940
Diagnosis Procedure .............................................940
DTC P1715 INPUT SPEED SENSOR ..............942
A/T .......................................................................... .942
A/T : Description ...................................................942
A/T : CONSULT-III Reference Value in Data Mon-
itor Mode ...............................................................
942
A/T : On Board Diagnosis Logic ............................942
A/T : Diagnosis Procedure ....................................942
CVT ......................................................................... .942
CVT : Description ..................................................942
CVT : CONSULT-III Reference Value in Data
Monitor Mode ....................................................... .
942
CVT : On Board Diagnosis Logic ..........................943
CVT : DTC Confirmation Procedure .....................943
CVT : Diagnosis Procedure ..................................943
DTC P1805 BRAKE SWITCH ..........................944
Description ........................................................... .944
CONSULT-III Reference Value in Data Monitor
Mode .................................................................... .
944
Revision: January 20102010 Versa
EC-160
< COMPONENT DIAGNOSIS >[HR16DE]
P0116 ECT SENSOR
5. Soak the vehicle until the resistance between “fuel level sensor unit and fuel pump” terminals 4 and 5
becomes 0.5 k Ω higher than the value measured before soaking.
CAUTION:
Never turn ignition switch ON during the soaking time.
NOTE:
Soak time changes depending on ambient ai r temperature. It may take several hours.
6. Start engine and let it idle for 20 minutes.
7. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> EC-160, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000005398336
1.CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
2. Check ground connections E15, 24. Refer to EC-119, "
Ground Inspection".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace ground connection.
2.CHECK ENGINE COOLANT TEMPERATURE SENSOR
Refer to EC-160, "
Component Inspection".
Is the inspection result normal?
YES >> GO TO 3.
NO >> Replace engine coolant temperature sensor.
3.CHECK INTERMITTENT INCIDENT
Refer to EC-114, "
Diagnosis Procedure".
>> INSPECTION END
Component InspectionINFOID:0000000005398337
1.CHECK ENGINE COOLANT TEMPERATURE SENSOR
1. Turn ignition switch OFF.
2. Disconnect engine coolant temperature sensor harness connector.
3. Remove engine coolant temperature sensor.
4. Check resistance between engine coolant temperature sensor terminals by heating with hot water as shown in the figure.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace engine coolant temperature sensor.
Terminals ConditionResistance
1 and 2 Temperature [ °C ( °F)] 20 (68) 2.37 - 2.63 k
Ω
50 (122) 0.68 - 1.00 kΩ
90 (194) 0.236 - 0.260 k Ω
PBIB2005E
Revision: January 20102010 Versa
EC-164
< COMPONENT DIAGNOSIS >[HR16DE]
P0117, P0118 ECT SENSOR
4. Check resistance between engine coolant temperature sensor
terminals by heating with hot water as shown in the figure.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace engine coolant temperature sensor.
Terminals ConditionResistance
1 and 2 Temperature [ °C ( °F)] 20 (68) 2.37 - 2.63 k
Ω
50 (122) 0.68 - 1.00 kΩ
90 (194) 0.236 - 0.260 k Ω
PBIB2005E
Revision: January 20102010 Versa
P0125 ECT SENSOREC-171
< COMPONENT DIAGNOSIS > [HR16DE]
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4. Check resistance between engine coolant temperature sensor
terminals by heating with hot water as shown in the figure.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace engine coolant temperature sensor.
Terminals ConditionResistance
1 and 2 Temperature [ °C ( °F)] 20 (68) 2.37 - 2.63 kΩ
50 (122) 0.68 - 1.00 k Ω
90 (194) 0.236 - 0.260 k Ω
PBIB2005E
Revision: January 20102010 Versa
P0128 THERMOSTAT FUNCTIONEC-175
< COMPONENT DIAGNOSIS > [HR16DE]
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Is the inspection result normal?
YES >> GO TO 2.
NO >> Replace engine coolant temperature sensor.
2.CHECK THERMOSTAT
Refer to CO-24, "
Inspection".
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace thermostat.
Component InspectionINFOID:0000000005398359
1.CHECK ENGINE COOLANT TEMPERATURE SENSOR
1. Turn ignition switch OFF.
2. Disconnect engine coolant temperature sensor harness connector.
3. Remove engine coolant temperature sensor.
4. Check resistance between engine coolant temperature sensor terminals by heating with hot water as shown in the figure.
Is the inspection result normal?
YES >> INSPECTION END
NO >> Replace engine coolant temperature sensor.
Terminals ConditionResistance
1 and 2 Temperature [ °C ( °F)] 20 (68) 2.37 - 2.63 kΩ
50 (122) 0.68 - 1.00 k Ω
90 (194) 0.236 - 0.260 k Ω
PBIB2005E
Revision: January 20102010 Versa