2010 NISSAN LATIO air condition

CVT-100
< SERVICE INFORMATION >[RE0F08B]
P0778 PRESSURE CONTROL SOLENOID B
P0778 PRESSURE CONTROL SOLENOID B
DescriptionINFOID:0000000005397892
• The secondary pressure solenoid valve is included in the control valve assembly.
• The secondary pressure solenoid valve regulates the oi
l pump discharge pressure to suit the driving condi-
tion in response to a signal sent from the TCM.
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000005397893
Remarks: Specification data are reference values.
On Board Diagn osis LogicINFOID:0000000005397894
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0778” with CONSULT-III is detected under the following conditions.
- TCM detects an improper voltage drop when it tries to operate the solenoid valve.
- When TCM compares target value with monitor value and detects an irregularity.
Possible CauseINFOID:0000000005397895
• Harness or connectors (Solenoid circuit is open or shorted.)
• Secondary pressure solenoid valve
DTC Confirmation ProcedureINFOID:0000000005397896
NOTE:
If “DTC Confirmation Procedure” has been previously performed, alw ays turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, perform the following proc edure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
3. Start engine and wait at least 5 seconds.
4. If DTC is detected, go to CVT-102, "
Diagnosis Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-III”.
Item name Condition Display value (Approx.)
ISOLT3 Secondary pressure low - Secondary pressure high 0.8 - 0.0 A
SOLMON3 “N” position idle
0.6 - 0.7 A
When stalled 0.4 - 0.6 A
Revision: January 20102010 Versa

P0840 TRANSMISSION FLUID PRESSURE SEN/SW ACVT-105
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P0840 TRANSMISSION FLUI D PRESSURE SEN/SW A
DescriptionINFOID:0000000005397900
• The secondary pressure sensor is included in the control valve assembly.
• The secondary pressure sensor detects secondar y pressure of CVT and sends TCM the signal.
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000005397901
Remarks: Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000005397902
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0840” with CONSULT-III is detected when TCM detects an improper voltage drop
when it receives the sensor signal.
Possible CauseINFOID:0000000005397903
• Secondary pressure sensor
• Harness or connectors
(Switch circuit is open or shorted.)
DTC Confirmation ProcedureINFOID:0000000005397904
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Turn ignition switch ON and select “DATA MO NITOR” mode for “TRANSMISSION” with CONSULT-III.
2. Make sure that output voltage of line temperature sensor is within the range below. ATF TEMP SEN: 1.0 - 2.0 V
If out of range, drive the vehicle to decrease the voltage (warm up the fluid) or stop engine to
increase the voltage (c ool down the fluid)
3. Start engine and wait for at least 5 consecutive seconds.
4. If DTC is detected, go to CVT-107, "
Diagnosis Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-III”.
Item name Condition Display value (Approx.)
SEC HYDR SEN “N” position idle 1.0 V
SEC PRESS 0.8 MPa
Revision: January 20102010 Versa

P0841 TRANSMISSION FLUID PRESSURE SEN/SW ACVT-109
< SERVICE INFORMATION > [RE0F08B]
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P0841 TRANSMISSION FLUI D PRESSURE SEN/SW A
DescriptionINFOID:0000000005397907
Using the engine load (throttle position), the primary pulley revolution speed, and the secondary pulley revolu-
tion speed as input signal, TCM changes the operating pr essure of the primary pulley and the secondary pul-
ley and changes the groove width of the pulley to control the gear ratio.
CONSULT-III Reference Val ue in Data Monitor ModeINFOID:0000000005397908
Remarks: Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000005397909
• This is not an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0841” with CONSULT-III is detected when secondary fluid pressure is too high
compared with the commanded value while driving.
Possible CauseINFOID:0000000005397910
• Secondary pressure sensor
• Harness or connectors (Sensor circuit is open or shorted.)
DTC Confirmation ProcedureINFOID:0000000005397911
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Turn ignition switch ON and select “DATA MO NITOR” mode for “TRANSMISSION” with CONSULT-III.
2. Start engine and maintain the following conditions for at least 12 consecutive seconds. VEHICLE SPEED: 40 km/h (25 MPH) More than
RANGE: “D” position
3. If DTC is detected, go to CVT-109, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005397912
1.CHECK CAN COMMUNICATION LINE
Perform the self-diagnosis. Refer to CVT-48, "
CONSULT-III Function (TRANSMISSION)".
Is any malfunction of the
“U1000” indicated?
YES >> Check CAN communication line. Refer to CVT-56.
NO >> GO TO 2.
2.CHECK INPUT SIGNALS
With CONSULT-III
1. Start engine.
2. Select “ECU INPUT SIGNALS” in “DATA MONITO R” mode for “TRANSMISSION” with CONSULT-III.
3. Start vehicle and read out the value of “SEC HYDR SEN” and “PRI HYDR SEN”.
Item nameCondition Display value (Approx.)
PRI HYDR SEN “N” position idle 0.7 V
SEC HYDR SEN 1.0 V
Revision: January 20102010 Versa

CVT-110
< SERVICE INFORMATION >[RE0F08B]
P0841 TRANSMISSION FLUID PRESSURE SEN/SW A
Without CONSULT-III
1. Start engine.
2. Check voltage between TCM connector terminals and ground.
OK or NG
OK >> GO TO 6.
NG >> GO TO 3.
3.CHECK LINE PRESSURE
Perform line pressure test. Refer to CVT-37, "
Inspections before Trouble Diagnosis".
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts. Refer to CVT-37, "
Inspections before Trouble Diagnosis".
4.CHECK SECONDARY PRESSURE SENSOR SYSTEM
Check secondary pressure sensor system. Refer to CVT-105
.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
5.DETECT MALFUNCTIONING ITEM
Check the following:
• Line pressure solenoid valve. Refer to CVT-94, "
Component Inspection".
• Step motor. Refer to CVT-132, "
Component Inspection".
OK or NG6
OK >> GO TO 6.
NG >> Repair or replace damaged parts.
6.CHECK DTC
Perform CVT-109, "
DTC Confirmation Procedure".
OK or NG
OK >> INSPECTION END
NG >> Replace TCM or transaxle assembly. Refer to CVT-173, "
Removal and Installation".
Item name ConditionDisplay value (Approx.)
PRI HYDR SEN “N” position idle 0.7 V
SEC HYDR SEN 1.0 V
Name Connector Terminal Condition Voltage
(Approx.)
Secondary pres-
sure sensor E32 37 - Ground “N” position idle 1.0 V
AWDIA0650GB
Revision: January 20102010 Versa

P0868 TRANSMISSION FLUID PRESSURECVT-111
< SERVICE INFORMATION > [RE0F08B]
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P0868 TRANSMISSION FLUID PRESSURE
DescriptionINFOID:0000000005397913
• The secondary pressure solenoid valve is included in the control valve assembly.
• The secondary pressure solenoid valve regulates the secondary pressure to suit the driving condition in
response to a signal sent from the TCM.
CONSULT-III Reference Val ue in Data Monitor ModeINFOID:0000000005397914
Remarks: Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000005397915
• This is not an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0868” with CONSULT-III is det ected when secondary fluid pressure is too low
compared with the commanded value while driving.
Possible CauseINFOID:0000000005397916
• Harness or connectors (Solenoid circuit is open or shorted.)
• Secondary pressure solenoid valve system
• Secondary pressure sensor
• Line pressure control system
DTC Confirmation ProcedureINFOID:0000000005397917
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Turn ignition switch ON and select “DATA MO NITOR” mode for “TRANSMISSION” with CONSULT-III.
2. Make sure that output voltage of CVT fluid temperature sensor is within the range below.
ATF TEMP SEN: 1.0 - 2.0 V
If out of range, drive the vehicle to decrease the voltage (warm up the fluid) or stop engine to
increase the voltage (c ool down the fluid)
3. Start engine and maintain the following conditions for at least 10 consecutive seconds. VEHICLE SPEED (accelerate slowly): 0 → 50 km/h (31 MPH)
ACC PEDAL OPEN: 0.5/8 - 1.0/8
RANGE: “D” position
4. If DTC is detected, go to CVT-111, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005397918
1.CHECK INPUT SIGNAL
With CONSULT-III
1. Start engine.
2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
3. Start vehicle and read out the value of “SEC PRESS”.
OK or NG
Item name Condition Display value (Approx.)
SEC PRESS “N” position idle 0.8 MPa
Item nameConditionDisplay value (Approx.)
SEC PRESS “N” position idle0.8 MPa
Revision: January 20102010 Versa

P1705 TP SENSORCVT-117
< SERVICE INFORMATION > [RE0F08B]
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P1705 TP SENSOR
DescriptionINFOID:0000000005397925
Electric throttle control actuator consists of throttle control motor, accelerator pedal position sensor, throttle
position sensor etc. The actuator sends a signal to the ECM, and ECM sends the signal to TCM with CAN
communication.
CONSULT-III Reference Val ue in Data Monitor ModeINFOID:0000000005397926
Remarks: Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000005397927
• This is not an OBD-II self-diagnostic item.
• Diagnostic trouble code “P1705” with CONSULT-III is detected when TCM does not receive the proper
accelerator pedal position signals (input by CAN communication) from ECM.
Possible CauseINFOID:0000000005397928
•ECM
• Harness or connectors(CAN communication line is open or shorted.)
DTC Confirmation ProcedureINFOID:0000000005397929
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Turn ignition switch ON. (Do not start engine.)
2. Select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
3. Depress accelerator pedal fully and release it, then wait for 5 seconds.
4. If DTC is detected, go to CVT-117, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005397930
1.CHECK CAN COMMUNICATION LINE
Perform the self-diagnosis check. Refer to CVT-48, "
CONSULT-III Function (TRANSMISSION)".
Is any malfunction of the
“U1000” indicated?
YES >> Check the CAN communication line. Refer to CVT-56.
NO >> GO TO 2.
2.CHECK INPUT SIGNAL
With CONSULT-III
1. Turn ignition switch ON. (Do not start engine.)
2. Select “ECU INPUT SIGNALS” in “DATA MONITO R” mode for “TRANSMISSION” with CONSULT-III.
3. Read out the value of “ACC PEDAL OPEN”.
OK or NG
Item name Condition Display value (Approx.)
ACC PEDAL OPEN Released accelerator pedal - Fully depressed accelerator pedal 0.0/8 - 8.0/8
Item name ConditionDisplay value (Approx.)
ACC PEDAL OPEN Release accelerator ped-
al.↓
Fully depressed acceler- ator pedal 0.0/8
↓
8.0/8
Revision: January 20102010 Versa

P1722 VEHICLE SPEEDCVT-119
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P1722 VEHICLE SPEED
DescriptionINFOID:0000000005397931
The vehicle speed signal is transmitt ed from ABS actuator and electric unit (control unit) to TCM by CAN com-
munication line.
CONSULT-III Reference Val ue in Data Monitor ModeINFOID:0000000005397932
Remarks: Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000005397933
• This is not an OBD-II self-diagnostic item.
• Diagnostic trouble code “P1722” with CONSULT-III is det ected when TCM does not receive the proper vehi-
cle speed signal (input by CAN communication) from ABS actuator and electric unit (control unit).
Possible CauseINFOID:0000000005397934
• Harness or connectors
(Sensor circuit is open or shorted.)
• ABS actuator and electric unit (control unit)
DTC Confirmation ProcedureINFOID:0000000005397935
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to con-
firm the malfunction is eliminated.
WITH CONSULT-III
1. Turn ignition switch ON. (Do not start engine.)
2. Select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
3. Start engine and maintain the following conditions for at least 5 consecutive seconds. ACC PEDAL OPEN: 1.0/8 or less
VEHICLE SPEED SE: 30 km/h (17 MPH) or more
4. If DTC is detected, go to CVT-119, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005397936
1.CHECK CAN COMMUNICATION LINE
Perform the self-diagnosis check. Refer to CVT-48, "
CONSULT-III Function (TRANSMISSION)".
Is any malfunction of the
“U1000” indicated?
YES >> Check CAN communication line. Refer to CVT-56.
NO >> GO TO 2.
2.CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
Perform ABS actuator and electric unit (cont rol unit) self-diagnosis check. Refer to BRC-20, "
CONSULT-III
Function (ABS)".
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3.CHECK INPUT SIGNALS
Item name Condition Display value
ESTM VSP SIG During driving Approximately matches the speedometer reading.
VEHICLE SPEED
Revision: January 20102010 Versa

CVT-120
< SERVICE INFORMATION >[RE0F08B]
P1722 VEHICLE SPEED
With CONSULT-III
1. Start engine.
2. Select “SELECTION FROM MENU” in “DATA MONI TOR” mode for “TRANSMISSION” with CONSULT-III.
3. Drive vehicle and read out the value of “VEHICLE SPEED” and “ESTM VSP SIG”.
4. Check if there is a great difference between the two values.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4.CHECK TCM
Check TCM input/output signals. Refer to CVT-46, "
TCM Terminal and Reference Value".
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
5.CHECK DTC
Perform CVT-119, "
DTC Confirmation Procedure".
OK or NG
OK >> INSPECTION END
NG >> GO TO 2.
Item name ConditionDisplay value
ESTM VSP SIG During drivingApproximately matches
the speedometer reading.
VEHICLE SPEED
Revision: January 20102010 Versa