check engine NISSAN LATIO 2011 Service User Guide

AT-44
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
A visual check only, may not find the cause of the malfunctions. A
road test with CONSULT-III or a circuit tester connected should be
performed. Follow the "WORK FLOW" .
Before undertaking actual checks, take a few minutes to talk with a
customer who approaches with a driveability complaint. The cus-
tomer can supply good information about such malfunctions, espe-
cially intermittent ones. Find out what symptoms are present and
under what conditions they occu r. A “DIAGNOSTIC WORKSHEET”
like the example ("DIAGNOSTIC WORKSHEET" ) should be used.
Start your diagnosis by looking for “conventional” malfunctions first.
This will help troubleshoot driveability malfunctions on an electroni-
cally controlled engine vehicle.
Also check related Service bulletins for information.
WORK FLOW
A good understanding of the malfunction conditions can make troubleshooting faster and more accurate. In
general, each customer feels differently about a malfuncti on. It is important to fully understand the symptoms
or conditions for a customer complaint.
Make good use of the two sheets provided, "Information from customer" and "Diagnostic Worksheet Chart" ,
to perform the best troubleshooting possible.
Work Flow Chart
SAT632I
SEF234G
Revision: May 2010 2011 Versa

AT-46
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
Diagnostic Worksheet Chart
Customer name MR./MS Model & YearVIN
Trans. model EngineMileage
Incident Date Manuf. DateIn Service Date
Frequency † Continuous † Intermittent ( times a day)
Symptoms † Vehicle does not move. ( † Any position † Particular position)
† No up-shift ( † 1st → 2nd † 2nd → 3rd † 3rd → 4th)
† No down-shift ( † 4th → 3rd † 3rd → 2nd† 2nd → 1st)
† Lock-up malfunction
† Shift point too high or too low.
† Shift shock or slip ( † N → D † Lock-up † Any drive position)
† Noise or vibration
† No kick down
† No pattern select
† Others
()
Malfunction indicator lamp (MIL) † Continuously lit † Not lit
1. † Read the Fail-safe and listen to customer complaints. AT- 4 2,
"Information
from
customer"
2. † Check A/T fluid AT- 1 7
† Leakage (Follow specified procedure)
† Fluid condition
† Fluid level
3. † Perform “STALL TEST” and “LINE PRESSURE TEST”. AT- 5 1
†“STALL TEST”— Mark possible damaged components/others.
† Torque converter one-way clutch
† Reverse clutch
† Forward clutch
† Overrun clutch
† Forward one-way clutch †
Low & reverse brake
† Low one-way clutch
† Engine
† Line pressure is low
† Clutches and brakes except high clutch and
brake band are OK
† “LINE PRESSURE TEST”— Suspected parts:
Revision: May 2010 2011 Versa

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4. † Perform “Road Test”. AT- 5 5
4-1. “Check Before Engine is Started” AT- 5 6
†AT- 1 8 0 , "OD OFF Indicator Lamp Does Not Come On"
† Perform self-diagnosis. Enter checks for detected items. AT- 7 7 , AT- 8 2 .
† CAN COMM CIRCUIT AT- 8 7
.
† TRANSMISSION RANGE SWITCH A AT- 9 0
.
† TRANSMISSION FLUID TEMPERATURE SENSOR A AT- 9 5
.
† OUTPUT SPEED SENSOR AT- 1 0 0
.
† ENGINE SPEED AT- 1 0 5
.
† 1GR INCORRECT RATIO AT- 1 0 9
† 2GR INCORRECT RATIO AT- 11 2 .
† 3GR INCORRECT RATIO AT- 11 5
.
† 4GR INCORRECT RATIO AT- 11 8
.
† TORQUE CONVERTER AT- 1 2 3
.
† TORQUE CONVERTER AT- 1 2 8
.
† PRESSURE CONTROL SOLENOID A AT- 1 3 3
.
† SHIFT SOLENOID A AT- 1 3 8
.
† SHIFT SOLENOID B AT- 1 4 3
.
† OVERRUN CLUTCH SOLENOID AT- 1 4 8
.
† VEHICLE SPEED SIGNAL AT- 1 5 3
.
† BATT/FLUID TEMP SEN AT- 1 5 6
.
† INPUT SPEED SENSOR A AT- 1 6 2
.
† CONTROL UNIT (RAM), CONTROL UNIT (ROM) AT- 1 6 7
.
† MAIN POWER SUPPLY AND GROUND CIRCUIT AT- 1 6 8
.
4-2. “Check at Idle” AT- 5 6
†AT- 1 8 2 , "Engine Cannot Be Started in "P" and "N" Position" .
† AT- 1 8 3 , "
In "P" Position, Vehicle Moves Forward or Backward When Pushed" .
† AT- 1 8 3 , "
In "N" Position, Vehicle Moves" .
† AT- 1 8 4 , "
Large Shock "N" → "R" Position" .
† AT- 1 8 5 , "
Vehicle Does Not Creep Backward in "R" Position" .
† AT- 1 8 6 , "
Vehicle Does Not Creep Forward in "D", "2" or "1" Position" .
Revision: May 2010 2011 Versa

AT-48
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
4. 4-3. “Cruise Test”AT- 5 8
Part 1
†AT- 1 8 7 , "
Vehicle Cannot Be Started from D1" .
† AT- 1 8 9 , "
A/T Does Not Shift: D1→ D2or Does Not Kickdown: D4→ D2" .
† AT- 1 9 0 , "
A/T Does Not Shift: D2→ D3" .
† AT- 1 9 2 , "
A/T Does Not Shift: D3→ D4" .
† AT- 1 9 3 , "
A/T Does Not Perform Lock-up" .
† AT- 1 9 4 , "
A/T Does Not Hold Lock-up Condition" .
† AT- 1 9 5 , "
Lock-up Is Not Released" .
† AT- 1 9 6 , "
Engine Speed Does Not Return to Idle (Light Braking D4→ D3)" .
Part 2 AT- 6 1
†AT- 1 8 7 , "Vehicle Cannot Be Started from D1" .
† AT- 1 8 9 , "
A/T Does Not Shift: D1→ D2or Does Not Kickdown: D4→ D2" .
† AT- 1 9 0 , "
A/T Does Not Shift: D2→ D3" .
† AT- 1 9 2 , "
A/T Does Not Shift: D3→ D4" .
Part 3 AT- 6 2
†AT- 1 9 7 , "A/T Does Not Shift: D4→ D3, When OD OFF" .
† AT- 1 9 8 , "
A/T Does Not Shift: D3→ 22, When Selector Lever "D" → "2" Position" .
† AT- 1 9 9 , "
A/T Does Not Shift: 22→ 11, When Selector Lever "2" → "1" Position" .
† AT- 2 0 1 , "
Vehicle Does Not Decelerate by Engine Brake" .
† Perform self-diagnosis. Enter checks for detected items. AT- 7 7
, AT- 8 2 .
† CAN COMM CIRCUIT AT- 8 7
.
† TRANSMISSION RANGE SWITCH A AT- 9 0
.
† TRANSMISSION FLUID TEMPERATURE SENSOR A AT- 9 5
.
† OUTPUT SPEED SENSOR AT- 1 0 0
.
† ENGINE SPEED AT- 1 0 5
.
† 1GR INCORRECT RATIO AT- 1 0 9
† 2GR INCORRECT RATIO AT- 11 2 .
† 3GR INCORRECT RATIO AT- 11 5
.
† 4GR INCORRECT RATIO AT- 11 8
.
† TORQUE CONVERTER AT-123
.
† TORQUE CONVERTER AT-128
.
† PRESSURE CONTROL SOLENOID A AT- 1 3 3
.
† SHIFT SOLENOID A AT- 1 3 8
.
† SHIFT SOLENOID B AT- 1 4 3
.
† OVERRUN CLUTCH SOLENOID AT- 1 4 8
.
† VEHICLE SPEED SIGNAL AT- 1 5 3
.
† BATT/FLUID TEMP SEN AT-156
.
† INPUT SPEED SENSOR A AT- 1 6 2
.
† CONTROL UNIT (RAM), CONTROL UNIT (ROM) AT-167
.
† MAIN POWER SUPPLY AND GROUND CIRCUIT AT- 1 6 8
.
5. † For self-diagnosis NG items, inspect each component. Repair or replace the damaged parts. AT- 7 7
,
AT- 8 2
6. † Perform “Road Test”. AT- 5 5
7.† Perform the Diagnostic Procedures for all remaining items marked NG. Repair or replace the damaged parts.
Refer to the Symptom Chart when you perform the procedures. (The chart also shows some other possible symp-
toms and the component inspection orders.) AT- 6 5
8.
† Erase DTC from TCM and ECM memories. AT- 3 9,
AT- 8 2
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TROUBLE DIAGNOSISAT-51
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Inspections Before Trouble DiagnosisINFOID:0000000005928094
A/T FLUID CHECK
Fluid Leakage and Fluid Level Check
Check fluid leakage and check the fluid level. Refer to AT-17, "Checking A/T Fluid".
Fluid Condition Check
Check the A/T fluid condition.
STALL TEST
Stall Test Procedure
1. Check ATF and engine oil levels. If necessary, add ATF and engine oil.
2. Drive vehicle for approximately 10 minutes or until ATF and engine oil reach operating temperature.
3. Set parking brake and block wheels.
4. Install a tachometer where it can be seen by driver during test. •It is good practice to mark the point of specified engine
rpm on indicator.
5. Start engine, apply foot brake, and place selector lever in “D” position.
Fluid status Conceivable Cause Required Operation
Varnished (viscous
varnish state) Clutch, brake
scorchedReplace the ATF and check the A/T
main unit and the vehicle for mal-
functions (wire harnesses, cooler
pipes, etc.)
Milky white or
cloudy Water in the ATFReplace the ATF and check for plac-
es where water is getting in.
Large amount of
metal powder mixed
in Unusual wear of
sliding parts within
A/T
Replace the ATF and check for im-
proper operation of the A/T.
SAT638A
ATF operating temperature: 50 - 80
°C (122 - 176 °F)
SAT647B
SAT513G
SAT775B
Revision: May 2010 2011 Versa

AT-54
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
Location of line pressure test ports are shown in the figure.
•Always replace pressure plugs as they are self-sealing bolts.
Line Pressure Test Procedure
1. Check ATF and engine oil levels. If necessary, add ATF or
engine oil.
2. Drive vehicle for approx. 10 minutes or until engine oil and ATF reach operating temperature.
3. Install oil pressure gauge to corresponding line pressure test port.
4. Set parking brake and block wheels.
5. Start engine and measure line pressure at idle and stall speed. CAUTION:
• Keep the brake pedal pressed all the way down duringmeasurement.
• When measuring the line pressure at the stall speed, refer to "STALL TEST".
SCIA7187E
ATF operating temperature: 50 - 80° C (122 -176°F)
SAT647B
SCIA6528J
SAT513G
SAT493G
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TROUBLE DIAGNOSISAT-55
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Line Pressure
Judgement of Line Pressure Test
Road TestINFOID:0000000005928095
DESCRIPTION
• The purpose of the test is to det
ermine overall performance of A/T
and analyze causes of malfunctions.
• The road test consists of the following three parts:
1. Check before engine is started. Refer to AT- 5 6
.
2. Check at idle. Refer to AT- 5 6
.
3. Cruise test • Inspection all the item from Part 1 to Part 3. Refer to AT- 5 8
,
AT- 6 1
and AT- 6 2 .
Engine speed Line pressure [kPa (kg/cm
2 , psi)]
D, 2nd and 1st positions R position
Idle speed AT- 3 7 4 , "
Line Pressure"Sta ll sp ee d
JudgementSuspected parts
At idle Line pressure is low in all positions. • Oil pump wear
• Control piston damage
• Pressure regulator valve or plug sticking
• Spring for pressure regulator valve damaged
• Fluid pressure leakage between oil strainer and pressure regulator valve
• Clogged strainer
Line pressure is low in particular posi-
tion. • Fluid pressure leakage between manual valve and particular clutch
• For example, line pressure is:
− Low in “R” and “1 ” positions, but
− Normal in “D”, and “2” positions.
Therefore, fluid leakage exists at or around low and reverse brake circuit.
Refer to AT- 2 2 , "
Shift Mechanism".
Line pressure is high. • Accelerator pedal position signal malfunction
• A/T fluid temperature sensor damaged
• Line pressure solenoid valve sticking
• Short circuit of line pressure solenoid valve circuit
• Pressure modifier valve sticking
• Pressure regulator valve or plug sticking
• Open in dropping resistor circuit
At stall
speed Line pressure is low.
• Accelerator pedal position signal malfunction
• Line pressure solenoid valve sticking
• Short circuit of line pressure solenoid valve circuit
• Pressure regulator valve or plug sticking
• Pressure modifier valve sticking
• Pilot valve sticking
SAT786A
Revision: May 2010 2011 Versa

AT-56
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
• Before road test, familiarize yourself with all test procedures anditems to check.
• Test all inspection items until the symptom is uncovered. Include
NG items in “Diagnostic Wo rksheet Chart”(Refer to AT- 4 3
). Per-
form a diagnosis of the NG items after the completion of all the
road tests.
Check Before Engine Is StartedINFOID:0000000005928096
1.CHECK OD OFF INDICATOR LAMP
1. Park vehicle on flat surface.
2. Move selector lever to “P” position.
3. Turn ignition switch OFF. Wait at least 5 seconds.
4. Turn ignition switch ON. (Do not start engine.)
Does OD OFF indicator lamp come on for about 2 seconds?
YES >> 1. Turn ignition switch OFF. 2. Perform self-diagnosis and note NG items.Refer to AT-77, "
CONSULT-III Function (TRANS-
MISSION)" , AT-82, "Diagnosis Procedure without
CONSULT-III" .
3. Go to AT-56, "
Check at Idle" .
NO >> Stop “Road Test”. Go to AT-180, "
OD OFF Indicator
Lamp Does Not Come On" .
Check at IdleINFOID:0000000005928097
1.CHECK ENGINE START
1. Park vehicle on flat surface.
2. Turn ignition switch ON. (Do not start engine.)
3. Move selector lever to “P” or “N” position.
4. Turn ignition switch to “START” position.
Is engine started?
YES >> GO TO 2.
NO >> • Stop “Road Test”. Mark the box on the “Diagnostic Worksheet Chart”.
•Go to AT-182, "
Engine Cannot Be Started in "P" and
"N" Position" .
2.CHECK ENGINE START
1. Turn ignition switch ON. (Do not start engine.)
SAT496G
SAT772B
SCIA7140E
SAT769B
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TROUBLE DIAGNOSISAT-57
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2. Move selector lever to “R”, “D”, “2” or “1” position.
3. Turn ignition switch to “START” position.
Is engine started?
YES >> • Stop “Road Test”. Mark the box on the “Diagnostic Worksheet Chart”.
•Go to AT-182, "
Engine Cannot Be Started in "P" and
"N" Position" .
• Continue “Road Test”.
NO >> GO TO 3.
3.CHECK VEHICLE MOVE
1. Move selector lever to “P” position.
2. Turn ignition switch OFF.
3. Release parking brake.
4. Push vehicle forward or backward.
Does vehicle move when it is pushed forward or backyard?
YES >> • Mark the box on the “D iagnostic Worksheet Chart”.
•Go to AT-183, "
In "P" Position, Vehicle Moves Forward
or Backward When Pushed" .
• Continue “Road Test”.
NO >> GO TO 4.
4.CHECK VEHICLE MOVE
1. Apply parking brake.
2. Start engine.
3. Move selector lever to “N” position.
4. Release parking brake.
Does vehicle move forward or backward?
YES >> • Mark the box on the “D iagnostic Worksheet Chart”.
•Go to AT-183, "
In "N" Position, Vehicle Moves" .
• Continue “Road Test”.
NO >> GO TO 5.
5.CHECK SHIFT SHOCK
SAT770B
SAT768B
SAT796A
SAT771B
Revision: May 2010 2011 Versa

AT-58
< SERVICE INFORMATION >
TROUBLE DIAGNOSIS
1. Apply foot brake.
2. Move selector lever to “R” position.
Is there large shock when changing from
“N” to “R” position?
YES >> • Mark the box on the “Diagnostic Worksheet Chart”.•Go to AT-184, "
Large Shock "N" → "R" Position" .
• Continue “Road Test”.
NO >> GO TO 6.
6.CHECK VEHICLE MOVE
Release foot brake for several seconds.
Does vehicle creep backward when foot brake is released?
YES >> GO TO 7.
NO >> • Mark the box on the “Diagnostic Worksheet Chart”. •Go to AT-185, "
Vehicle Does Not Creep Backward in
"R" Position" .
• Continue “Road Test”.
7.CHECK VEHICLE MOVE
Move selector lever to “D”, “2” and “1” positions and check if vehicle
creeps forward.
Does vehicle creep forward in all three positions?
YES >> Go to AT-58, "Cruise Test - Part 1" .
NO >> • Mark the box on the “Diagnostic Worksheet Chart”.
•Go to AT-186, "
Vehicle Does Not Creep Forward in
"D", "2" or "1" Position" .
• Continue “Road Test”.
Cruise Test - Part 1INFOID:0000000005928098
1.CHECK STARTING GEAR (D1 ) POSITION
1. Drive vehicle for approximately 10 minutes to warm engine oil and ATF up to operating temperature.
2. Park vehicle on flat surface.
SAT797A
SAT772B
SAT799A
SAT773B
ATF operating temperature: 50 - 80° C (122 - 176°F)
Revision: May 2010 2011 Versa