2008 NISSAN LATIO transmission fluid

CL-1
TRANSMISSION/TRANSAXLE
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CONTENTS
CLUTCH
SERVICE INFORMATION ............................2
PRECAUTIONS ...................................................2
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................
2
Precaution for Procedure without Cowl Top Cover ......2
Service Notice or Precaution .....................................2
PREPARATION ...................................................3
Special Service Tool .................................................3
Commercial Service Tool ..........................................3
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING .............................
4
NVH Troubleshooting Chart ......................................4
CLUTCH PEDAL .................................................5
On-vehicle Inspection and Adjustment ......................5
Removal and Installation ...........................................6
CLUTCH FLUID ...................................................8
Air Bleeding Procedure .............................................8
CLUTCH MASTER CYLINDER .........................9
Removal and Installation ..........................................9
CSC (CONCENTRIC SLAVE CYLINDER) .......11
Removal and Installation .........................................11
CLUTCH PIPING ...............................................12
Removal and Installation .........................................12
CLUTCH DISC, CLUTCH COVER AND FLY-
WHEEL ..............................................................
13
Removal and Installation .........................................13
SERVICE DATA AND SPECIFICATIONS
(SDS) .................................................................
16
Clutch Control System .............................................16
Clutch Pedal ............................................................16
Clutch Disc ..............................................................16
Clutch Cover ............................................................16

CVT-1
TRANSMISSION/TRANSAXLE
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SECTION CVT
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CVT
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CONTENTS
CVT
SERVICE INFORMATION ............................5
INDEX FOR DTC .................................................5
Alphabetical Index .....................................................5
DTC No. Index ..........................................................5
PRECAUTIONS ...................................................7
Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ...................................................................
7
Precaution Necessary for Steering Wheel Rota-
tion After Battery Disconnect .....................................
7
Precaution for On Board Diagnosis (OBD) System
of CVT and Engine ....................................................
7
Service After Replacing TCM and Transaxle As-
sembly .......................................................................
8
Removal and Installation Procedure for CVT Unit
Connector ..................................................................
9
Precaution ...............................................................10
Service Notice or Precaution ...................................11
PREPARATION ..................................................12
Special Service Tool ...............................................12
Commercial Service Tool ........................................12
CVT FLUID .........................................................13
Checking CVT Fluid ................................................13
Changing CVT Fluid ................................................14
CVT Fluid Cooler Cleaning .....................................14
CVT SYSTEM .....................................................18
Cross-Sectional View - RE0F08A ...........................18
Control System ........................................................19
Hydraulic Control System ........................................20
TCM Function ..........................................................20
CAN Communication ...............................................21
Input/Output Signal of TCM .....................................22
Line Pressure and Secondary Pressure Control .....22
Shift Control ............................................................23
Lock-up and Select Control .....................................24
Control Valve ...........................................................25
ON BOARD DIAGNOSTIC (OBD) SYSTEM ....26
Introduction ..............................................................26
OBD-II Function for CVT System ............................26
One or Two Trip Detection Logic of OBD-II .............26
OBD-II Diagnostic Trouble Code (DTC) ..................26
Malfunction Indicator Lamp (MIL) ............................27
TROUBLE DIAGNOSIS ....................................29
DTC Inspection Priority Chart ..................................29
Fail-Safe ..................................................................29
How to Perform Trouble Diagnosis for Quick and
Accurate Repair .......................................................
30
CVT Electrical Parts Location ..................................35
Circuit Diagram ........................................................36
Inspections before Trouble Diagnosis .....................36
Road Test ................................................................40
Check before Engine Is Started ...............................41
Check at Idle ............................................................41
Cruise Test ..............................................................43
Vehicle Speed When Shifting Gears .......................45
TCM Terminal and Reference Value .......................45
CONSULT-III Function (TRANSMISSION) ..............47
Diagnosis Procedure without CONSULT-III ............55
DTC U1000 CAN COMMUNICATION LINE .....56
Description ...............................................................56
On Board Diagnosis Logic .......................................56
Possible Cause ........................................................56
DTC Confirmation Procedure ..................................56
Wiring Diagram - CVT - CAN ...................................57
Diagnosis Procedure ...............................................58
DTC U1010 TRANSMISSION CONTROL
MODULE (CAN) ................................................
59
Description ...............................................................59
On Board Diagnosis Logic .......................................59
Possible Cause ........................................................59
DTC Confirmation Procedure ..................................59
Diagnosis Procedure ...............................................59
DTC P0615 START SIGNAL CIRCUIT .............60

CVT-3
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CVT
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P N CONSULT-III Reference Value in Data Monitor
Mode .....................................................................
100
On Board Diagnosis Logic ....................................100
Possible Cause .....................................................100
DTC Confirmation Procedure ................................100
Diagnosis Procedure .............................................100
DTC P0776 PRESSURE CONTROL SOLE-
NOID B PERFORMANCE (SEC PRESSURE
SOLENOID VALVE) .........................................
102
Description ............................................................102
CONSULT-III Reference Value in Data Monitor
Mode .....................................................................
102
On Board Diagnosis Logic ....................................102
Possible Cause .....................................................102
DTC Confirmation Procedure ................................102
Diagnosis Procedure .............................................102
DTC P0778 PRESSURE CONTROL SOLE-
NOID B ELECTRICAL (SEC PRESSURE SO-
LENOID VALVE) ..............................................
104
Description ............................................................104
CONSULT-III Reference Value in Data Monitor
Mode .....................................................................
104
On Board Diagnosis Logic ....................................104
Possible Cause .....................................................104
DTC Confirmation Procedure ................................104
Wiring Diagram - CVT - SECPSV .........................105
Diagnosis Procedure .............................................106
Component Inspection ..........................................107
DTC P0840 TRANSMISSION FLUID PRES-
SURE SENSOR A CIRCUIT (SEC PRES-
SURE SENSOR) ...............................................
109
Description ............................................................109
CONSULT-III Reference Value in Data Monitor
Mode .....................................................................
109
On Board Diagnosis Logic ....................................109
Possible Cause .....................................................109
DTC Confirmation Procedure ................................109
Wiring Diagram - CVT - SECPS ............................110
Diagnosis Procedure .............................................111
DTC P0841 PRESSURE SENSOR FUNC-
TION .................................................................
113
Description ............................................................113
CONSULT-III Reference Value in Data Monitor
Mode .....................................................................
113
On Board Diagnosis Logic ....................................113
Possible Cause .....................................................113
DTC Confirmation Procedure ................................113
Diagnosis Procedure .............................................113
DTC P0845 TRANSMISSION FLUID PRES-
SURE SENSOR B CIRCUIT (PRI PRESSURE
SENSOR) ..........................................................
115
Description ............................................................115
CONSULT-III Reference Value in Data Monitor
Mode .....................................................................
115
On Board Diagnosis Logic .....................................115
Possible Cause ......................................................115
DTC Confirmation Procedure ................................115
Wiring Diagram - CVT - PRIPS .............................116
Diagnosis Procedure .............................................117
DTC P0868 SECONDARY PRESSURE
DOWN .............................................................
119
Description .............................................................119
CONSULT-III Reference Value in Data Monitor
Mode ......................................................................
119
On Board Diagnosis Logic .....................................119
Possible Cause ......................................................119
DTC Confirmation Procedure ................................119
Diagnosis Procedure .............................................119
DTC P1701 TRANSMISSION CONTROL
MODULE (POWER SUPPLY) .........................
121
Description .............................................................121
On Board Diagnosis Logic .....................................121
Possible Cause ......................................................121
DTC Confirmation Procedure ................................121
Wiring Diagram - CVT - POWER ...........................122
Diagnosis Procedure .............................................123
DTC P1705 THROTTLE POSITION SENSOR .125
Description .............................................................125
CONSULT-III Reference Value in Data Monitor
Mode ......................................................................
125
On Board Diagnosis Logic .....................................125
Possible Cause ......................................................125
DTC Confirmation Procedure ................................125
Diagnosis Procedure .............................................125
DTC P1722 ESTM VEHICLE SPEED SIGNAL .127
Description .............................................................127
CONSULT-III Reference Value in Data Monitor
Mode ......................................................................
127
On Board Diagnosis Logic .....................................127
Possible Cause ......................................................127
DTC Confirmation Procedure ................................127
Diagnosis Procedure .............................................127
DTC P1723 CVT SPEED SENSOR FUNC-
TION ................................................................
129
Description .............................................................129
On Board Diagnosis Logic .....................................129
Possible Cause ......................................................129
DTC Confirmation Procedure ................................129
Diagnosis Procedure .............................................129
DTC P1726 ELECTRIC THROTTLE CON-
TROL SYSTEM ...............................................
131
Description .............................................................131
On Board Diagnosis Logic .....................................131
Possible Cause ......................................................131
DTC Confirmation Procedure ................................131
Diagnosis Procedure .............................................131

CVT-4
DTC P1740 LOCK-UP SELECT SOLENOID
VALVE CIRCUIT ..............................................
132
Description .............................................................132
CONSULT-III Reference Value in Data Monitor
Mode ......................................................................
132
On Board Diagnosis Logic .....................................132
Possible Cause ......................................................132
DTC Confirmation Procedure ................................132
Wiring Diagram - CVT - L/USSV ............................133
Diagnosis Procedure .............................................134
Component Inspection ...........................................135
DTC P1745 LINE PRESSURE CONTROL ......136
Description .............................................................136
On Board Diagnosis Logic .....................................136
Possible Cause ......................................................136
DTC Confirmation Procedure ................................136
Diagnosis Procedure .............................................136
DTC P1777 STEP MOTOR - CIRCUIT ............137
Description .............................................................137
CONSULT-III Reference Value in Data Monitor
Mode ......................................................................
137
On Board Diagnosis Logic .....................................137
Possible Cause ......................................................137
DTC Confirmation Procedure ................................137
Wiring Diagram - CVT - STM .................................138
Diagnosis Procedure .............................................139
Component Inspection ...........................................140
DTC P1778 STEP MOTOR - FUNCTION ........141
Description .............................................................141
CONSULT-III Reference Value in Data Monitor
Mode ......................................................................
141
On Board Diagnosis Logic .....................................141
Possible Cause ......................................................141
DTC Confirmation Procedure ................................141
Diagnosis Procedure .............................................142
OVERDRIVE CONTROL SWITCH ..................143
Description .............................................................143
CONSULT-III Reference Value in Data Monitor
Mode ......................................................................
143
Wiring Diagram - CVT - ODSW .............................144
Diagnosis Procedure .............................................144
Component Inspection ...........................................146
SHIFT POSITION INDICATOR CIRCUIT ........148
Description .............................................................148
CONSULT-III Reference Value in Data Monitor
Mode ......................................................................
148
Diagnosis Procedure .............................................148
TROUBLE DIAGNOSIS FOR SYMPTOMS .....149
Wiring Diagram - CVT - NONDTC .........................149
O/D OFF Indicator Lamp Does Not Come On ......151
Engine Cannot Be Started in "P" and "N" Position .153
In "P" Position, Vehicle Moves Forward or Back-
ward When Pushed ...............................................
153
In "N" Position, Vehicle Moves ..............................154
Large Shock "N" → "R" Position ...........................154
Vehicle Does Not Creep Backward in "R" Position .155
Vehicle Does Not Creep Forward in "D" or "L" Po-
sition ......................................................................
156
Vehicle Speed Does Not Change in "L" Position ..157
Vehicle Speed Does Not Change in overdrive-off
mode .....................................................................
158
Vehicle Speed Does Not Change in "D" Position .159
Vehicle Does Not Decelerate by Engine Brake ....159
TRANSMISSION CONTROL MODULE ...........161
Removal and Installation .......................................161
CVT SHIFT LOCK SYSTEM .............................162
Description ............................................................162
Shift Lock System Electrical Parts Location ..........162
Wiring Diagram - CVT - SHIFT .............................163
Diagnosis Procedure .............................................163
SHIFT CONTROL SYSTEM .............................167
Removal and Installation .......................................167
Control Device Disassembly and Assembly .........170
Selector Lever Knob Removal and Installation .....170
Adjustment of CVT Position ..................................171
Checking of CVT Position .....................................171
KEY INTERLOCK CABLE ...............................173
Removal and Installation .......................................173
AIR BREATHER HOSE ....................................176
Removal and Installation .......................................176
DIFFERENTIAL SIDE OIL SEAL .....................177
Removal and Installation .......................................177
TRANSAXLE ASSEMBLY ...............................178
Removal and Installation .......................................178
SERVICE DATA AND SPECIFICATIONS
(SDS) ................................................................
181
General Specification ............................................181
Vehicle Speed When Shifting Gears .....................181
Stall Speed ............................................................181
Line Pressure ........................................................181
Solenoid Valves ....................................................182
CVT Fluid Temperature Sensor ............................182
Primary Speed Sensor ..........................................182
Secondary Speed Sensor .....................................182
Removal and Installation .......................................182

PRECAUTIONS
CVT-11
< SERVICE INFORMATION >
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•Before replacing TCM, perform TCM input/output signal
inspection and make sure whether TCM functions properly or
not. CVT-45, "
TCM Terminal and Reference Value".
•After performing each TROUBLE DIAGNOSIS, perform “DTC
Confirmation Procedure”.
If the repair is completed the DTC should not be displayed in
the “DTC Confirmation Procedure”.
• Always use the specified brand of CVT fluid. Refer to MA-10, "
Flu-
ids and Lubricants".
• Use lint-free paper, not cloth rags, during work.
• After replacing the CVT fluid, dispose of the waste oil using the
methods prescribed by law, ordinance, etc.
Service Notice or PrecautionINFOID:0000000001703430
CVT FLUID COOLER SERVICE
If CVT fluid contains friction material (clutches, brakes, etc.), or if an CVT is replaced, inspect and clean the
CVT fluid cooler mounted in the radiator or replace the radiator. Flush cooler lines using cleaning solvent and
compressed air after repair. For CVT fluid cooler cleaning procedure, refer to CVT-14, "
CVT Fluid Cooler
Cleaning". For radiator replacement, refer to CO-11.
OBD-II SELF-DIAGNOSIS
• CVT self-diagnosis is performed by the TCM in combination with the ECM. The results can be read through
the blinking pattern of the malfunction indicator lamp (MIL). Refer to the table on CVT-47, "
CONSULT-III
Function (TRANSMISSION)" for the indicator used to display each self-diagnostic result.
• The self-diagnostic results indicated by the MIL are automatically stored in both the ECM and TCM memo-
ries.
Always perform the procedure on CVT-26, "
OBD-II Diagnostic Trouble Code (DTC)" to complete the
repair and avoid unnecessary blinking of the MIL.
For details of OBD-II, refer to EC-46
.
•Certain systems and components, especially those related to OBD, may use the new style slide-lock-
ing type harness connector. For description and how to disconnect, refer to PG-65
.
MEF040DA
SEF217U

CVT-14
< SERVICE INFORMATION >
CVT FLUID
FLUID CONDITION CHECK
Changing CVT FluidINFOID:0000000001703434
1. Warm up CVT fluid by driving the vehicle for 10 minutes.
• : Vehicle front
• Radiator (2)
• CVT fluid cooler hose [inlet side (3)]
• Transaxle assembly (4)
2. Drain CVT fluid from CVT fluid cooler hose [outlet side (1)] and
refill with new specified NISSAN CVT fluid in the CVT fluid
charging pipe with the engine running at idle speed.
CAUTION:
Only use the specified NISSAN CVT fluid.
3. Refill until new CVT fluid comes out from CVT fluid cooler hose [outlet side (1)].
NOTE:
About 30 to 50% extra fluid will be required for this procedure.
4. Check fluid level and condition. Refer to MA-19, "
Checking CVT Fluid".
CAUTION:
Delete CVT fluid deterioration date with CONSULT-III after changing CVT fluid. Refer to CVT-47,
"CONSULT-III Function (TRANSMISSION)".
CVT Fluid Cooler CleaningINFOID:0000000001703435
Whenever a CVT is repaired, overhauled, or replaced, the CVT fluid cooler mounted in the radiator must be
inspected and cleaned.
Metal debris and friction material, if present, can be trapped or become deposit in the CVT fluid cooler. This
debris can contaminate the newly serviced CVT or, in severe cases, can block or restrict the flow of CVT fluid.
In either case, malfunction of the newly serviced CVT may occur.
Debris, if present, may deposit as CVT fluid enters the cooler inlet. It will be necessary to back flush the cooler
through the cooler outlet in order to flush out any built up debris.
CVT FLUID COOLER CLEANING PROCEDURE
1. Identify the CVT inlet and outlet fluid cooler hoses.
2. Position an oil pan under the inlet and outlet cooler hoses.
Fluid status Conceivable cause Required operation
Varnished (viscous
varnish state)Clutch, brake
scorchedReplace the CVT fluid and check the
CVT main unit and the vehicle for
malfunctions (wire harness, cooler
pipes, etc.)
Milky white or cloudy Water in the fluid Replace the CVT fluid and check for
places where water is getting in.
Large amount of
metal powder mixed
in fluidUnusual wear of
sliding parts within
CVTReplace the CVT fluid and check for
improper operation of the CVT.
ATA0022D
Fluid capacity and grade: Refer to MA-10, "Fluids
and Lubricants".SCIA6088E

CVT FLUID
CVT-15
< SERVICE INFORMATION >
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3. Disconnect the fluid cooler inlet and outlet rubber hoses from the
steel cooler tubes.
NOTE:
Replace the cooler hoses if rubber material from the hose
remains on the tube fitting.
4. Allow any CVT fluid that remains in the cooler hoses to drain into
the oil pan.
5. Insert the extension adapter hose of a can of Transmission
Cooler Cleaner (Nissan P/N 999MP-AM006) into the cooler out-
let hose.
CAUTION:
• Wear safety glasses and rubber gloves when spraying the
Transmission Cooler Cleaner.
• Spray Transmission Cooler Cleaner only with adequate
ventilation.
• Avoid contact with eyes and skin.
• Do not breath vapors or spray mist.
6. Hold the hose and can as high as possible and spray Transmis-
sion Cooler Cleaner in a continuous stream into the cooler outlet
hose until CVT fluid flows out of the cooler inlet hose for 5 seconds.
7. Insert the tip of an air gun into the end of the cooler outlet hose.
8. Wrap a shop rag around the air gun tip and of the cooler outlet
hose.
9. Blow compressed air regulated to 5 to 9 kg/cm
2 (70 to 130 psi)
through the cooler outlet hose for 10 seconds to force out any
remaining CVT fluid.
10. Repeat steps 5 through 9 three additional times.
11. Position an oil pan under the banjo bolts that connect the CVT
fluid cooler steel lines to the transaxle.
12. Remove the banjo bolts.
13. Flush each steel line from the cooler side back toward the tran-
saxle by spraying Transmission Cooler Cleaner in a continuous stream for 5 seconds.
14. Blow compressed air regulated to 5 to 9 kg/cm
2 (70 to 130 psi) through each steel line from the cooler
side back toward the transaxle for 10 seconds to force out any remaining CVT fluid.
15. Ensure all debris is removed from the steel cooler lines.
16. Ensure all debris is removed from the banjo bolts and fittings.
17. Perform "CVT FLUID COOLER DIAGNOSIS PROCEDURE".
CVT FLUID COOLER DIAGNOSIS PROCEDURE
NOTE:
Insufficient cleaning of the cooler inlet hose exterior may lead to inaccurate debris identification.
1. Position an oil pan under the transaxle's inlet and outlet cooler hoses.
2. Clean the exterior and tip of the cooler inlet hose.
SCIA4421E
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SCIA4423E

CVT-16
< SERVICE INFORMATION >
CVT FLUID
3. Insert the extension adapter hose of a can of Transmission
Cooler Cleaner (Nissan P/N 999MP-AM006) into the cooler out-
let hose.
CAUTION:
• Wear safety glasses and rubber gloves when spraying the
Transmission Cooler Cleaner.
• Spray Transmission Cooler Cleaner only with adequate
ventilation.
• Avoid contact with eyes and skin.
• Do not breath vapors or spray mist.
4. Hold the hose and can as high as possible and spray Transmis-
sion Cooler Cleaner in a continuous stream into the cooler outlet
hose until CVT fluid flows out of the cooler inlet hose for 5 seconds.
5. Tie a common white, basket-type coffee filter to the end of the
cooler inlet hose.
6. Insert the tip of an air gun into the end of the cooler outlet hose.
7. Wrap a shop rag around the air gun tip and end of cooler outlet
hose.
8. Blow compressed air regulated to 5 to 9 kg/cm
2 (70 to 130 psi)
through the cooler outlet hose to force any remaining CVT fluid
into the coffee filter.
9. Remove the coffee filter from the end of the cooler inlet hose.
10. Perform "CVT FLUID COOLER INSPECTION PROCEDURE".
CVT FLUID COOLER INSPECTION PROCEDURE
1. Inspect the coffee filter for debris.
a. If small metal debris less than 1 mm (0.040 in) in size or metal
powder is found in the coffee filter, this is normal. If normal
debris is found, the CVT fluid cooler/radiator can be re-used and
the procedure is ended.
SCIA4421E
SCIA4424E
SCIA4425E
SCIA2967E