Nissan Versa Note. Manual — part 813
TM-132
< BASIC INSPECTION >
[CVT: RE0F11A]
LINE PRESSURE TEST
LINE PRESSURE TEST
Work Procedure
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INSPECTION
1. Check the engine oil level. Replenish if necessary. Refer to
2. Check for CVT fluid leaks. Refer to
3. Drive for about 10 minutes to warm up the vehicle so that the CVT fluid temperature is 50 to 80
°C (122 to
176
°F).
4. Stop the vehicle, apply the parking brake and block the tires.
5. Start the engine.
6. Select “Data Monitor” in “TRANSMISSION”.
7. Select “LINE PRESSURE”.
8. Measure the line pressure at both idle and the stall speed.
CAUTION:
Keep brake pedal pressed all the way down during measurement.
NARROWING-DOWN MALFUNCTIONING PARTS
Line pressure
Judgment 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
• Damage of chain and sprocket
• 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:
• 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:
• Oil pump wear
• 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.
CVT POSITION
TM-133
< BASIC INSPECTION >
[CVT: RE0F11A]
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CVT POSITION
Inspection
INFOID:0000000009020085
1. Turn ON the ignition switch with the shift selector in the "P" position.
2. Press the shift selector handle button with the brake pedal depressed, and confirm that the shift selector
can be moved from the "P" position. Also confirm that shift selector will not move from the "P" position
without depressing the brake pedal.
3. Move the shift selector and check for “excessive effort,” “sticking,” “noise” or “rattle”.
4. Confirm that shift selector stops at each position with the feel of engagement when it is moved through all
the positions. Check whether or not the actual position the shift selector is in matches the position shown
by the transaxle body.
5. The method of operating the shift selector to individual positions
correctly should be as shown.
• (A): Press shift selector button to operate shift selector, while
depressing the brake pedal.
• (B): Press shift selector button to operate shift selector.
• (C): Shift selector can be operated without pressing shift
selector button.
6. When the shift selector handle button is pressed without apply-
ing forward/backward force to the shift selector at “P”, “R”, “N”
and “D” positions, there should be no “sticking” of the button.
7. Confirm the back-up lamps illuminate only when shift selector is
placed in the “R” position. Confirm the back-up lamps do not illu-
minate when the shift selector is pushed toward the “R” position side when shift selector is in the “P” or “N”
position.
8. Check that the engine can be started only when the shift selector is in the “P” and “N” positions.
9. Check that the transaxle is locked when the shift selector is in the "P" position.
Adjustment
INFOID:0000000009020084
1. Move the shift selector to the “P” position.
CAUTION:
Rotate the wheels at least a quarter turn and be certain the transaxle is locked in the "P" position.
2. Remove nut (A) and set manual lever (B) to the “P” position.
CAUTION:
Do not apply force to the manual lever.
3. Tighten nuts to the specified torque. Refer to
.
CAUTION:
Do not move the manual lever when tightening.
WCIA0620E
JSDIA1875ZZ
TM-134
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F11A]
U0073 COMMUNICATION BUS A OFF
DTC/CIRCUIT DIAGNOSIS
U0073 COMMUNICATION BUS A OFF
Description
INFOID:0000000009019647
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 speed and excellent malfunction detection ability.
Many electronic control units are equipped onto a vehicle, and each control unit shares information and links
with other control units during operation (not independently). In CAN communication, control units are con-
nected 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.
DTC Logic
INFOID:0000000009019648
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PREPARATION BEFORE WORK
If another “DTC CONFIRMATION PROCEDURE” occurs just before, turn ignition switch OFF and wait for at
least 10 seconds, then perform the next test.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine and wait for at least 5 seconds.
2. Check the DTC.
Is “U0073” detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009019649
For the diagnosis procedure, refer to
LAN-15, "Trouble Diagnosis Flow Chart"
DTC
Trouble diagnosis name
DTC detection condition
Possible causes
U0073
Control Module Communica-
tion Bus A Off
TCM communication blockage lasts for 2 sec-
onds or more when turning ON the ignition
switch. (Communication not established.)
Harness or connector
(CAN communication line is error)
U0100 LOST COMMUNICATION (ECM A)
TM-135
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F11A]
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U0100 LOST COMMUNICATION (ECM A)
Description
INFOID:0000000009019650
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 speed and excellent malfunction detection ability.
Many electronic control units are equipped onto a vehicle, and each control unit shares information and links
with other control units during operation (not independently). In CAN communication, control units are con-
nected 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.
DTC Logic
INFOID:0000000009019651
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PREPARATION BEFORE WORK
If another “DTC CONFIRMATION PROCEDURE” occurs just before, turn ignition switch OFF and wait for at
least 10 seconds, then perform the next test.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1. Start the engine and wait for at least 5 seconds.
2. Check the DTC.
Is “U0100” detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009019652
For the diagnosis procedure, refer to
LAN-15, "Trouble Diagnosis Flow Chart"
DTC
Trouble diagnosis name
DTC detection condition
Possible causes
U0100
Lost Communication With
ECM/PCM A
When the ignition switch is ON, TCM is un-
able to receive the CAN communications
signal from ECM continuously for 2 sec-
onds or more.
• ECM
• Harness or connector
(CAN communication line is open or
shorted)
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