2010 NISSAN TIIDA Accelerator

CVT-22
< SERVICE INFORMATION >[RE0F08B]
CVT SYSTEM
CONTROL SYSTEM DIAGRAM
CAN CommunicationINFOID:0000000005397774
SYSTEM DESCRIPTION
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication s
peed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CA N communication, control units are connected with 2
communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only. For details, refer to LAN-7,
"System Description".
Input/Output Signal of TCMINFOID:0000000005397775
AWDIA0769GB
Control itemFluid
pressure control Select con-
trol Shift control Lock-up
control CAN com-
munication control Fail-safe
function (*3)
Input T
ra n sm is sio n r ang e s wit c h XXXXXX
Accelerator pedal position signal
(*1)XXXXXX
Closed throttle position signal
(*1)X XXX
Engine speed signal
(*1)XX XXX
CVT fluid temperature sensor XX XX X
Stop lamp switch signal
(*1)X XXX
Overdrive control signal
(*1)XX
Primary speed sensor X XXXX
Secondary speed sensor XXXXXX
Secondary pressure sensor XX X
T C M pow er s upp ly v olt a ge s ig n al XXXXXX
Revision: January 20102010 Versa

CVT-24
< SERVICE INFORMATION >[RE0F08B]
CVT SYSTEM
mand to the step motor, and control the flow-in/flow-out of line pressure from the primary pulley to determine
the position of the moving-pulley and control the gear ratio.
NOTE:
The gear ratio is set for every position separately.
“D” POSITION
Shifting over all the ranges of gear ratios from the lowest to the high-
est.
OVERDRIVE-OFF MODE
Use this position for the improved engine braking.
“L” POSITION
By limiting the gear range to the lowest position, the strong driving
force and the engine brake can be secured.
DOWNHILL ENGINE BRAKE CONTROL
(AUTO ENGINE BRAKE CONTROL)
When downhill is detected with the accelerator pedal released, the engine brake will be strengthened up by
downshifting so as not to accelerate the vehicle more than necessary.
ACCELERATION CONTROL
According to vehicle speed and a change of accelerator pedal angle, driver's request for acceleration and driv-
ing scene are judged. This function assists improvem ent in acceleration feeling by making the engine speed
proportionate to the vehicle speed. And a shift map which can gain a larger driving force is available for com-
patibility of mileage with driveability.
AWDIA0770GB
SCIA1953E
SCIA1955E
Revision: January 20102010 Versa

CVT-36
< SERVICE INFORMATION >[RE0F08B]
TROUBLE DIAGNOSIS
CVT Electrical Parts Location
INFOID:0000000005397788
1. O/D OFF indicator lamp 2. Shift position indicator3. Accelerator pedal position sensor
4. CVT unit harness connector 5. Fuel door release 6. TCM
7. Overdrive control switch
BCIA0033E
Revision: January 20102010 Versa

TROUBLE DIAGNOSISCVT-39
< SERVICE INFORMATION > [RE0F08B]
D
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CVT
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6. While holding down the foot brake, gradually press down the accelerator pedal.
7. Quickly read off the stall speed, and then quickly remove your foot from the accelerator pedal.
CAUTION:
Do not hold down the accelerat or pedal for more than 5 sec-
onds during this test.
8. Move the selector lever to the “N” position.
9. Cool down the CVT fluid. CAUTION:
Run the engine at idle for at least 1 minute.
10. Repeat steps 6 through 9 with selector lever in “R” position.
Judgement Stall Test
O: Stall speed within standard value position.
H: Stall speed is higher than standard value.
L: Stall speed is lower than standard value.
LINE PRESSURE TEST
Line Pressure Test Port
Line Pressure Test Procedure
1. Inspect the amount of engine oil and replenish if necessary.
2. Drive the car for about 10 minutes to warm it up so that the CVT fluid reaches in the range of 50 to 80°C
(122 to 176 °F), then inspect the amount of CVT fluid and replenish if necessary.
NOTE: Stall speed:
CVT-176, "
Stall Speed"
SAT514G
SAT771B
Selector lever position
Expected problem location
“D” “R”
Stall rotation HO•F
orw ard c lu tc h
O H • Reverse brake
L L • Engine and torque converter one-way clutch
HH • Line pressure low
• Primary pulley
• Secondary pulley
•Steel belt
SCIA6184E
Revision: January 20102010 Versa

TROUBLE DIAGNOSISCVT-41
< SERVICE INFORMATION > [RE0F08B]
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Road TestINFOID:0000000005397791
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: January 20102010 Versa

CVT-44
< SERVICE INFORMATION >[RE0F08B]
TROUBLE DIAGNOSIS
6. Accelerate vehicle to 2/8-way throttle depressing accelerator
pedal constantly.
Read vehicle speed and engine speed. Refer to CVT-45,
"Vehicle Speed When Shifting Gears" .
OK or NG
OK >> GO TO 2.
NG >> Mark the box of CVT-149, "
Vehicle Speed Does Not
Change in "L" Position" on the CVT-31, "How to Per-
form Trouble Diagnosis for Quick and Accurate Repair" .
Continue “Road Test”.
2.CHECK VEHICLE SPEED WHEN SHIFTING GEARS — PART 2
1. Park vehicle on flat surface.
2. Move selector lever to “D” position.
3. Push overdrive control switch. (O/D OFF indicator lamp is on.)
4. Accelerate vehicle to 2/8-way throttle depressing accelerator pedal constantly.
Read vehicle speed and engine speed. Refer to CVT-45,
"Vehicle Speed When Shifting Gears" .
OK or NG
OK >> GO TO 3.
NG >> Mark the box of CVT-150, "
Vehicle Speed Does Not
Change in overdrive-off mode" on the CVT-31, "How to
Perform Trouble Diagnosis for Quick and Accurate
Repair" . Continue “Road Test”.
3.CHECK VEHICLE SPEED WHEN SHIFTING GEARS — PART 3
1. Park vehicle on flat surface.
2. Move selector lever to “D” position.
3. Push overdrive control switch. (O/D OFF indicator lamp is off.)
4. Accelerate vehicle to 2/8-way throttle depressing accelerator pedal constantly.
Read vehicle speed and engine speed. Refer to CVT-45,
"Vehicle Speed When Shifting Gears" .
OK or NG
OK >> GO TO 4.
NG >> Mark the box of CVT-151, "
Vehicle Speed Does Not
Change in "D" Position" on the CVT-31, "How to Per-
form Trouble Diagnosis for Quick and Accurate Repair" .
Continue “Road Test”.
4.CHECK VEHICLE SPEED WHEN SHIFTING GEARS — PART 4
1. Park vehicle on flat surface.
2. Move selector lever to “L” position.
3. Accelerate vehicle to full depression depressing accelerator pedal constantly.
Read vehicle speed and engine speed. Refer to CVT-45,
"Vehicle Speed When Shifting Gears" .
OK or NG
OK >> GO TO 5.
NG >> Mark the box of CVT-149, "
Vehicle Speed Does Not
Change in "L" Position" on the CVT-31, "How to Per-
form Trouble Diagnosis for Quick and Accurate Repair" .
Continue “Road Test”.
5.CHECK VEHICLE SPEED WHEN SHIFTING GEARS — PART 5
SCIA6644E
SCIA6644E
SCIA6644E
SCIA4366E
Revision: January 20102010 Versa

TROUBLE DIAGNOSISCVT-45
< SERVICE INFORMATION > [RE0F08B]
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1. Park vehicle on flat surface.
2. Move selector lever to “D” position.
3. Push overdrive control switch. (O/D OFF indicator lamp is on.)
4. Accelerate vehicle to full depressing depressing accelerator pedal constantly.
Read vehicle speed and engine speed. Refer to CVT-45,
"Vehicle Speed When Shifting Gears" .
OK or NG
OK >> GO TO 6.
NG >> Mark the box of CVT-150, "
Vehicle Speed Does Not
Change in overdrive-off mode" on the CVT-31, "How to
Perform Trouble Diagnosis for Quick and Accurate
Repair" . Continue “Road Test”.
6.CHECK VEHICLE SPEED WHEN SHIFTING GEARS — PART 6
1. Park vehicle on flat surface.
2. Move selector lever to “D” position.
3. Push overdrive control switch. (O/D OFF indicator lamp is off.)
4. Accelerate vehicle to full depression depressing accelerator pedal constantly.
Read vehicle speed and engine speed. Refer to CVT-45,
"Vehicle Speed When Shifting Gears" .
OK or NG
OK >> GO TO 7.
NG >> Mark the box of CVT-151, "
Vehicle Speed Does Not
Change in "D" Position" on the CVT-31, "How to Per-
form Trouble Diagnosis for Quick and Accurate Repair" .
Continue “Road Test”.
7.CHECK ENGINE BRAKE FUNCTION — PART 1
1. Release accelerator pedal.
2. Check engine brake. (O/D OFF indicator lamp is off.)
Does engine braking effectively reduce speed in
“D” position?
YES >> GO TO 8.
NO >> Mark the box of CVT-151, "
Vehicle Does Not Decelerate by Engine Brake" on the CVT-31, "How
to Perform Trouble Diagnosis for Quick and Accurate Repair" . Continue “Road Test”.
8.CHECK ENGINE BRAKE FUNCTION — PART 2
1. Push overdrive control switch. (O/D OFF indicator lamp is on.)
2. Check engine brake.
Does engine braking effectively reduce speed in
“D” position?
YES >> GO TO 9.
NO >> Mark the box of CVT-151, "
Vehicle Does Not Decelerate by Engine Brake" on the CVT-31, "How
to Perform Trouble Diagnosis for Quick and Accurate Repair" . Continue “Road Test”.
9.CHECK ENGINE BRAKE FUNCTION — PART 3
1. Move selector lever to “L” position.
2. Check engine brake.
Does engine braking effectively reduce speed in
“L” position?
YES >> 1. Stop the vehicle. 2. Perform self-diagnosis. Refer to CVT-48, "
CONSULT-III Function (TRANSMISSION)" .
NO >> Mark the box of CVT-151, "
Vehicle Does Not Decelerate by Engine Brake" on the CVT-31, "How
to Perform Trouble Diagnosis for Quick and Accurate Repair" . Then continue trouble diagnosis.
Vehicle Speed When Shifting GearsINFOID:0000000005397795
Numerical value data are reference values.
SCIA4366E
SCIA4366E
Revision: January 20102010 Versa

CVT-46
< SERVICE INFORMATION >[RE0F08B]
TROUBLE DIAGNOSIS
CAUTION:
Lock-up clutch is engaged when vehicle speed is approximately 18 km/h (11 MPH) to 90 km/h (56 MPH).
TCM Terminal and Reference ValueINFOID:0000000005397796
TCM HARNESS CONNECTOR TERMINAL LAYOUT
TERMINALS AND REFERENCE VALUES FOR TCM
Data are reference values and are measured between each terminal and ground.
Engine type Throttle position Shift patternEngine speed (rpm)
At 40 km/h (25 MPH) At 60 km/h (37 MPH)
MR18DE 8/8
“D” position
Overdrive-off mode “L” position 3,600 - 4,500
4,400 - 5,300
2/8 “D” position
1,300 - 3,100 1,400 - 3,500
Overdrive-off mode 2,200 - 3,000 2,800 - 3,600
“L” position 3,100 - 4,000 3,800 - 4,700
WCIA0717E
Te r m i n a lWire
color Item
ConditionData (Approx.)
1GR Line pressure
solenoid valve
and Release your foot from the accelerator pedal.
5.0 - 7.0 V
Press the accelerator pedal all the way down. 1.0 - 3.0 V
2LG Secondary pres-
sure solenoid
valve Release your foot from the accelerator pedal.
5.0 - 7.0 V
Press the accelerator pedal all the way down. 3.0 - 4.0 V
3SB Torque converter
clutch solenoid
valve When vehi-
cle cruises in
“D” position.When CVT performs lock-up.
6.0 V
When CVT does not perform lock-up. 1.0 V
4BR Lock-up select
solenoid valve Selector lever in “P” and “N
” positions Battery voltage
Wait at least for 5 seconds with the selector lever in
“R”, “D” and “L” positions 0 V
5 L CAN-H ——
6 P CAN-L ——
10 R Power supply —
Battery voltage
—0 V
11 L Step motor A Within 2 seconds after ignition switch ON, the time measurement by using the pulse width measurement function (Hi level) of CONSULT-III.*1
*1: A circuit tester cannot be used to test this item. 30.0 msec
12 Y Step motor B 10.0 msec
13 G ROM assembly ——
Revision: January 20102010 Versa