2011 NISSAN LATIO oil pressure

P0745 PRESSURE CONTROL SOLENOID ACVT-91
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P0745 PRESSURE CONTROL SOLENOID A
DescriptionINFOID:0000000005928835
• The line pressure solenoid valve is included in the control valve assembly.
• The line pressure solenoid valve regulates the oil pum p discharge pressure to suit the driving condition in
response to a signal sent from the TCM.
CONSULT-III Reference Val ue in Data Monitor ModeINFOID:0000000005928836
Remarks: Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000005928837
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0745” 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:0000000005928838
• Harness or connectors
(Solenoid circuit is open or shorted.)
• Line pressure solenoid valve
DTC Confirmation ProcedureINFOID:0000000005928839
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 wait at least 5 seconds.
3. If DTC is detected, go to CVT-93, "
Diagnosis Procedure".
WITH GST
Follow the procedure “WITH CONSULT-III”.
Item name Condition Display value (Approx.)
ISOLT2 Release your foot from the accelerator pedal.
0.8 A
Press the accelerator pedal all the way down. 0.0 A
Revision: May 2010 2011 Versa

CVT-96
< SERVICE INFORMATION >[RE0F08B]
P0746 PRESSURE CONTROL SOLENOID A
P0746 PRESSURE CONTROL SOLENOID A
DescriptionINFOID:0000000005928843
• The line pressure solenoid valve is included in the control valve assembly.
• The line pressure solenoid valve regulates the oil pum
p discharge pressure to suit the driving condition in
response to a signal sent from the TCM.
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000005928844
Remarks: Specification data are reference values.
On Board Diagn osis LogicINFOID:0000000005928845
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0746” with CONSULT-III is detected under the following conditions.
- Unexpected gear ratio was detected in the LOW side due to excessively low line pressure.
Possible CauseINFOID:0000000005928846
• Line pressure control system
• Secondary speed sensor
• Primary speed sensor
DTC Confirmation ProcedureINFOID:0000000005928847
CAUTION:
Always drive vehicle at a safe speed.
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, 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 and select “DATA MONI TOR” mode for “TRANSMISSION” with CONSULT-III.
2. Start engine and maintain the following conditions for at least 10 consecutive seconds. Test start from 0
km/h (0 MPH).
ATF TEMP SEN: 1.0 - 2.0 V
ACC PEDAL OPEN: More than 1.0/8
RANGE: “D” position
VEHICLE SPEED: 10 km/h (6 MPH) More than
Driving location: Driving the vehicle uphill (increased engine load) will help maintain the driving
conditions required for this test.
3. If DTC is detected, go to CVT-96, "
Diagnosis Procedure".
WITH GST
Follow the procedure “WITH CONSULT-III”.
Diagnosis ProcedureINFOID:0000000005928848
1.CHECK LINE PRESSURE
Perform line pressure test. Refer to CVT-37, "
Inspections before Trouble Diagnosis".
OK or NG
OK >> GO TO 2.
NG >> Repair or replace damaged parts. Refer to CVT-37, "
Inspections before Trouble Diagnosis".
2.DETECT MALFUNCTIONING ITEM
Check line pressure solenoid valve. Refer to CVT-94, "
Component Inspection".
Item nameCondition Display value (Approx.)
PRI PRESS “N” position idle 0.4 MPa
Revision: May 2010 2011 Versa

CVT-128
< SERVICE INFORMATION >[RE0F08B]
P1745 LINE PRESSURE CONTROL
P1745 LINE PRESSURE CONTROL
DescriptionINFOID:0000000005928918
The line pressure solenoid valve regulates the oil pump discharge pressure to suit the driving condition in
response to a signal sent from the TCM.
On Board Diagn
osis LogicINFOID:0000000005928919
• This is not an OBD-II self-diagnostic item.
• Diagnostic trouble code “P1745” with CONSULT-III is detected when TCM detects the unexpected line pres-
sure.
Possible CauseINFOID:0000000005928920
TCM
DTC Confirmation ProcedureINFOID:0000000005928921
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, 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 and select “DATA MONI TOR” 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 (cool down the fluid)
3. If DTC is detected, go to CVT-128, "
Diagnosis Procedure" .
Diagnosis ProcedureINFOID:0000000005928922
1.CHECK DTC
1. Turn ignition switch ON. (Do not start engine.)
2. Select “SELF-DIAG RESULTS” mode fo r “TRANSMISSION” with CONSULT-III.
3. Erase self-diagnostic results. Refer to CVT-27, "
OBD-II Diagnostic Trouble Code (DTC)".
4. Turn ignition switch OFF, and wait for 10 seconds or more.
5. Start engine.
6. Confirm self-diagnostic results again. Refer to CVT-48, "
CONSULT-III Function (TRANSMISSION)" .
Is the
“P1745” displayed?
YES >> Replace TCM. Refer to CVT-159, "Removal and Installation" .
NO >> INSPECTION END
Revision: May 2010 2011 Versa

P1777 STEP MOTORCVT-129
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P1777 STEP MOTOR
DescriptionINFOID:0000000005928923
• The step motor is included in the control valve assembly.
• The step motor changes the step with turning 4 coils ON/OF F according to the signal from TCM. As a result,
the flow of line pressure to primary pu lley is changed and pulley ratio is controlled
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000005928924
Remarks: Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000005928925
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P1777” with CONSULT-III is detected under the following conditions.
- When operating step motor ON and OFF, there is no proper change in the voltage of TCM terminal which
corresponds to it.
Possible CauseINFOID:0000000005928926
• Step motor
• Harness or connectors(Step motor circuit is open or shorted.)
DTC Confirmation ProcedureINFOID:0000000005928927
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 and select “DATA MO NITOR” mode for “TRANSMISSION” with CONSULT-III.
2. Drive vehicle for at least 5 consecutive seconds.
3. If DTC is detected, go to CVT-131, "
Diagnosis Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-III”.
Item name ConditionDisplay value (Approx.)
STM STEP
During driving(−
20) - (+180) step
SMCOIL A
Changes on⇔off.
SMCOIL B
SMCOIL C
SMCOIL D
Revision: May 2010
2011 Versa

CVT OIL WARMER SYSTEMCVT-175
< SERVICE INFORMATION > [RE0F08B]
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CVT OIL WARMER SYSTEM
WATER HOSE
WATER HOSE : Exploded ViewINFOID:0000000006068646
WATER HOSE : Removal and InstallationINFOID:0000000006068647
REMOVAL
WARNING:
Never remove the radiator cap when the engine is hot. Serious burns could occur from high pressure
coolant escaping from the radiator.
CAUTION:
Perform this step engine is cold.
1. Remove air duct (inlet). Refer to EM-135, "
Component".
2. Remove hose clamps, and remove CVT water hose A.
3. Remove hose clamps, and remove CVT water hose B.
4. Remove hose clamps, and remove CVT water hose C.
5. Remove CVT water tube.
INSTALLATION
Installation is in the reverse order of removal.
1. Hose clamp 2. CVT water hose C3. CVT water tube
4. CVT water hose B 5. Transaxle assembly6. CVT oil warmer
7. CVT water hose A
A. Water pump B. Water inlet-outlet
Refer to GI-8, "
Component" for symbols in the figure.
JSDIA1290GB
Revision: May 2010 2011 Versa

CVT OIL WARMER SYSTEMCVT-179
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CVT FLUID COOLER HOSE : InspectionINFOID:0000000006068651
INSPECTION AFTER INSTALLATION
Check for CVT fluid leakage and check CVT fluid level. Refer to CVT-14, "Checking CVT Fluid".
CVT OIL WARMER
CVT OIL WARMER : Exploded ViewINFOID:0000000006068652
CVT OIL WARMER : Removal and InstallationINFOID:0000000006068653
REMOVAL
WARNING:
Never remove the radiator cap when the engine is hot. Serious burns could occur from high pressure
coolant escaping from the radiator.
CAUTION:
Perform this step engine is cold.
1. Remove CVT water hose from CVT oil warmer. Refer to CVT-175, "
WATER HOSE : Exploded View".
2. Remove CVT fluid cooler hose from CVT oil warmer. Refer to CVT-177, "
CVT FLUID COOLER HOSE :
Exploded View".
3. Remove CVT oil warmer.
4. Remove bracket.
INSTALLATION
Installation is in the reverse order of removal.
CVT OIL WARMER : InspectionINFOID:0000000006068654
INSPECTION AFTER INSTALLATION
• Check for CVT fluid leakage and check CVT fluid level. Refer to CVT-14, "Checking CVT Fluid".
• Start and warm up the engine. Visually check that there is no leakage of engine coolant and CVT fluid.
1. CVT oil warmer2. Bracket3. Transaxle assembly
Refer to GI-8, "
Component" for symbols in the figure.
JPDIA0725GB
Revision: May 2010 2011 Versa

DI-1
ELECTRICAL
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CONTENTS
DRIVER INFORMATION SYSTEM
SERVICE INFORMATION .. ..........................2
PRECAUTION ................................................ .....2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ............................................................. ......
2
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect ............................... ......
2
COMBINATION METERS ...................................4
Component Parts and Harness Connector Loca-
tion ...................................................................... ......
4
System Description ...................................................4
Arrangement of Combination Meter ..........................6
Internal Circuit ...........................................................7
Wiring Diagram - METER - .......................................8
Combination Meter Harness Connector Terminal
Layout .....................................................................
10
Terminal and Reference Value for Combination
Meter .......................................................................
10
Self-Diagnosis Mode of Combination Meter ........ ....11
CONSULT-III Function (METER/M&A) ............... ....13
Trouble Diagnosis ...................................................14
Symptom Chart .......................................................15
Power Supply and Ground Circuit Inspection .........15
Vehicle Speed Signal Inspection .............................16
Engine Speed Signal Inspection .............................17
Fuel Level Sensor Signal Inspection .......................17
Fuel Gauge Fluctuates, Indicates Wrong Value, or
Varies ......................................................................
19
Fuel Gauge Does Not Move to Full-position ...........19
DTC [U1000] CAN Communication Circuit ......... ....19
Electrical Component Inspection .............................20
Removal and Installation .........................................20
WARNING LAMPS ......................................... ....21
Schematic ........................................................... ....21
Wiring Diagram - WARN - ................................... ....22
Oil Pressure Warning Lamp Stays Off (Ignition
Switch ON) .......................................................... ....
30
Oil Pressure Warning Lamp Does Not Turn Off
(Oil Pressure Is Normal) ...................................... ....
32
Component Inspection .............................................32
A/T INDICATOR ................................................34
System Description ..................................................34
Wiring Diagram - AT/IND - .......................................35
A/T Indicator Does Not Illuminate ............................36
CVT INDICATOR ...............................................38
System Description ..................................................38
Schematic ................................................................38
Wiring Diagram - CVTIND - .....................................39
CVT Indicator Does Not Illuminate ..........................41
WARNING CHIME .............................................43
Component Parts and Harness Connector Loca-
tion ....................................................................... ....
43
System Description ..................................................43
Wiring Diagram - CHIME - .......................................46
Terminal and Reference Value for BCM ..................47
CONSULT-III Function (B CM) .................................47
Trouble Diagnosis ................................................ ....48
Combination Meter Buzzer Circuit Inspection .........49
Front Door Switch LH Signal Inspection .............. ....50
Key Switch Signal Inspection (Without Intelligent
Key) ..................................................................... ....
51
Key Switch and Ignition Knob Switch Signal In-
spection (With Intelligent Key, When Mechanical
Key Is Used) ........................................................ ....
52
Lighting Switch Signal Inspection ............................54
Parking Brake Switch Signal Inspection ..................54
Electrical Component Inspection .............................55
Revision: May 2010 2011 Versa

DI-14
< SERVICE INFORMATION >
COMBINATION METERS
NOTE:
Some items are not available due to vehicle specification.
*: The monitor will indicate “OFF” even though the brake warning lamp is on if either of the following conditions exist.
• The parking brake is engaged
• The brake fluid level is low
Trouble DiagnosisINFOID:0000000005929168
HOW TO PERFORM TROUBLE DIAGNOSIS
1. Confirm the symptom or customer complaint.
2. Perform preliminary check. Refer to "PRELIMINARY CHECK" .
3. According to the symptom chart, repair or replace the cause of the malfunction. Refer to DI-15, "
Symptom
Chart" .
4. Does the meter operate normally? If so, GO TO 5. If not, GO TO 2.
5. Inspection End.
PRELIMINARY CHECK
1.CHECK SELF-DIAGNOSIS OPERAT ION OF COMBINATION METER
Perform self-diagnosis of combination meter. Refer to DI-11, "
Self-Diagnosis Mode of Combination Meter" .
Does self
-diagnosis mode operate?
TURN IND [ON/OFF] X Indicates [ON/OFF] condition of turn indicator.
OIL W/L [ON/OFF] X Indicates [ON/OFF] condition of oil pressure warning lamp.
VDC/TCS IND [ON/OFF] X Indicates [ON/OFF] condition of VDC OFF indicator lamp.
ABS W/L [ON/OFF] X Indicates [ON/OFF] condition of ABS warning lamp.
SLIP IND [ON/OFF] X Indicates [ON/OFF] condition of SLIP indicator lamp.
BRAKE W/L [ON/OFF] X Indicates [ON/OFF] condition of brake warning lamp.*
KEY G/Y W/L [ON/OFF] X Indicates [ON/OFF] condition of KEY warning lamp (green).
KEY R W/L [ON/OFF] X Indicates [ON/OFF] condition of KEY warning lamp (red).
KEY KNOB W/L [ON/OFF] X Indicates [ON/OFF] condition of LOCK warning lamp.
PNP P SW [ON/OFF] XX Indicates [ON/OFF] condition of inhibitor P switch.
PNP N SW [ON/OFF] XX Indicates [ON/OFF] condition of inhibitor N switch.
O/D OFF SW [ON/OFF] X Indicates [ON/OFF] condition of O/D OFF switch.
BRAKE SW [ON/OFF] X Indicates [ON/OFF] condition of parking brake switch.
P RANGE IND [ON/OFF] XXIndicates [ON/OFF] condition of A/T or CVT shift P range indi-
cator.
R RANGE IND [ON/OFF] XXIndicates [ON/OFF] condition of A/T or CVT shift R range indi-
cator.
N RANGE IND [ON/OFF] XXIndicates [ON/OFF] condition of A/T or CVT shift N range indi-
cator.
D RANGE IND [ON/OFF] XXIndicates [ON/OFF] condition of A/T or CVT shift D range indi-
cator.
2 RANGE IND [ON/OFF] XX Indicates [ON/OFF] condition of A/T shift 2 range indicator.
L RANGE IND [ON/OFF] XX Indicates [ON/OFF] condition of CVT shift L range indicator.
1 RANGE IND [ON/OFF] XX Indicates [ON/OFF] condition of A/T shift 1 range indicator.
CRUISE IND [ON/OFF] X Indicates [ON/OFF] condition of CRUISE indicator.
SET IND [ON/OFF] X Indicates [ON/OFF] condition of SET indicator.
O/D OFF W/L [ON/OFF] X Indicates [ON/OFF] condition of O/D OFF indicator lamp.
EPS W/L [ON/OFF] X Indicates [ON/OFF] condition of EPS warning lamp.
Display item [Unit]
MAIN
SIGNALS SELECTION
FROM MENU Contents
Revision: May 2010
2011 Versa