2011 NISSAN LATIO Service Repair Manual

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Page 1089 of 3787

NISSAN LATIO 2011 Service Repair Manual CVT-34
< SERVICE INFORMATION >[RE0F08B]
TROUBLE DIAGNOSIS
4�†
Perform road test. CVT-41
4-1.Check before engine is started
CVT-42
�†CVT-143, "O/D OFF Indicator Lamp Does Not Come On"
�† Perfor

Page 1090 of 3787

NISSAN LATIO 2011 Service Repair Manual TROUBLE DIAGNOSISCVT-35
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44-3. Cruise test
CVT-43
�†CVT-149, "Vehicle Speed Does Not Change in "L" Position"
�†CVT-150, "Vehicle

Page 1091 of 3787

NISSAN LATIO 2011 Service Repair Manual CVT-36
< SERVICE INFORMATION >[RE0F08B]
TROUBLE DIAGNOSIS
CVT Electrical Parts Location
INFOID:0000000005928751
1. O/D OFF indicator lamp 2. Shift position indicator3. Accelerator pedal position senso

Page 1092 of 3787

NISSAN LATIO 2011 Service Repair Manual TROUBLE DIAGNOSISCVT-37
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Circuit DiagramINFOID:0000000005928752
Inspections before Trouble DiagnosisINFOID:0000000005928753
CVT FLUID

Page 1093 of 3787

NISSAN LATIO 2011 Service Repair Manual CVT-38
< SERVICE INFORMATION >[RE0F08B]
TROUBLE DIAGNOSIS
• Inspect for fluid leakage and check the fluid level. Refer to
CVT-14, "Checking CVT Fluid" .
Fluid Condition Check
Inspect the fluid cond

Page 1094 of 3787

NISSAN LATIO 2011 Service Repair Manual TROUBLE DIAGNOSISCVT-39
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6. While holding down the foot brake, gradually press down the accelerator pedal.
7. Quickly read off the st

Page 1095 of 3787

NISSAN LATIO 2011 Service Repair Manual CVT-40
< SERVICE INFORMATION >[RE0F08B]
TROUBLE DIAGNOSIS
The CVT fluid temperature rises in the range of 50 - 80
°C (122 - 176° F) during 10 minutes of driving.
3. After warming up CVT, remove the

Page 1096 of 3787

NISSAN LATIO 2011 Service Repair Manual TROUBLE DIAGNOSISCVT-41
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Road TestINFOID:0000000005928754
DESCRIPTION
• The purpose of the test is to determine overall performance

TROUBLE DIAGNOSISCVT-41
< SERVICE INFORMATION > [RE0F08B]
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Road TestINFOID:0000000005928754
DESCRIPTION
• The purpose of the test is to determine overall performance of CVT and analyze causes of problems.
• The road test consists of the following three parts:
1. “Check Before Engine Is Started” CVT-42
.
2. “Check at Idle”CVT-42
.
3. “Cruise Test”CVT-43
.
• Before road test, familiarize yourself with all test procedures and items to check.
• Perform tests on all items until specified symptom is found. Trou-
bleshoot items which check out No Good after road test.
Judgement Possible cause
Idle speed Low for all positions
(“P”, “R”, “N”, “D”, “L”)
Possible causes include malfunctions in the pressure supply system and low oil pump output.
For example
• Oil pump wear
• Pressure regulator valve or plug sticking or spring fatigue
• Oil strainer
⇒ oil pump ⇒ pressure regulator valve passage oil leak
• Engine idle speed too low
Only low for a specific
position Possible causes include an oil pressure leak in a passage or device related to the position after
the pressure is distributed by the manual valve.
High Possible causes include a sensor malfunction or malfunction in the line pressure adjustment
function.
For example
• Accelerator pedal position signal malfunction
• CVT fluid temperature sensor malfunction
• Line pressure solenoid) malfunction (sticking in OFF state, filter clog, cut line)
• Pressure regulator valve or plug sticking
Stall speed Line pressure does
not rise higher than
the line pressure for
idle.
Possible causes include a sensor malfunction or malfunction in the pressure adjustment func-
tion.
For example
• Accelerator pedal position signal malfunction
•TCM malfunction
• Line pressure solenoid) malfunction (shorting, sticking in ON state)
• Pressure regulator valve or plug sticking
The pressure rises,
but does not enter the
standard position. Possible causes include malfunctions in the pressure supply system and malfunction in the pres-
sure adjustment function.
For example
• Accelerator pedal position signal malfunction
• Line pressure solenoid) malfunction (sticking, filter clog)
• Pressure regulator valve or plug sticking
Only low for a specific
position Possible causes include an oil pressure leak in a passage or device related to the position after
the pressure is distributed by the manual valve.
SAT786A
SAT496G
Revision: May 2010
2011 Versa

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