TM-80
< SYSTEM DESCRIPTION >[CVT: RE0F11A]
SYSTEM
CVT CONTROL SYSTEM : Protection Control
INFOID:0000000012431020
The TCM becomes the protection control status temporarily to protect the safety when the safety of TCM and
transmission is lost. It automatically returns to the normal status if the safety is secured.
The TCM has the following protection control.
CONTROL FOR WHEEL SPIN
P0999•Start is slow
• Lock-up is not performed
Wire disconnection
• Vehicle speed is not increased
• Lock-up is not performed Voltage shorting
P099B Start is slow —
P099C •Start is slow
• Lock-up is not performed
Wire disconnection
• Vehicle speed is not increased
• Lock-up is not performed Voltage shorting
P1586 Idle neutral control is not performed —
P1588 Idle neutral control is not performed —
P2765 • Selector shock is large
•Start is slow
• Acceleration is slow
• Vehicle speed is not increased
• Lock-up is not performed
—
P2857 •Start is slow
• Lock-up is not performed —
P2858 • Vehicle speed is not increased
• Lock-up is not performed —
P2859 Vehicle speed is not increased —
P285A Start is slow —
U0073 • Selector shock is large
•Start is slow
• Acceleration is slow
• Lock-up is not performed —
U0100 • Selector shock is large
•Start is slow
• Acceleration is slow
• Lock-up is not performed —
U0140 Not changed from normal driving —
U0141 Not changed from normal driving —
U0155 Not changed from normal driving —
U0300 • Selector shock is large
•Start is slow
• Acceleration is slow
• Lock-up is not performed —
U1000 Not changed from normal driving —
U1114 Not changed from normal driving —
U1117 Not changed from normal driving —
DTC
Vehicle behavior Conditions of vehicle
ControlWhen a wheel spin is detected, the engine output and gear ratio are limited and the line pressure is increased.
At the 1GR, the clutch pressure is increased.
Revision: August 2015
2016 Versa Note
cardiagn.com
TM-82
< SYSTEM DESCRIPTION >[CVT: RE0F11A]
SYSTEM
LINE PRESSURE CONTROL : System Description
INFOID:0000000012431021
SYSTEM DIAGRAM
DESCRIPTION
Highly accurate line pressure control (secondary pressure control) reduces friction for improvement of fuel
economy.
Normal Oil Pressure Control
Appropriate line pressure and secondary pressure su itable for driving condition are determined based on the
accelerator pedal position, engine speed, primary pulle y (input) speed, secondary pulley (output) speed, vehi-
cle speed, input torque, stop lamp switch signal, transmission range switch signal, lock-up signal, power volt-
age, target shift ratio, oil temperature and oil pressure.
Secondary Pressure Feedback Control
In normal oil pressure control and oil pressure control in shifting, highly accurate secondary pressure is deter-
mined by detecting the secondary pressure using a oil pressure sensor and by feedback control.
SHIFT CONTROL
JSDIA1864GB
Revision: August 2015 2016 Versa Note
cardiagn.com
TM-86
< SYSTEM DESCRIPTION >[CVT: RE0F11A]
SYSTEM
LOCK-UP CONTROL : System Description
INFOID:0000000012431024
SYSTEM DIAGRAM
DESCRIPTION
• Controls for improvement of the transmission effi ciency by engaging the torque converter clutch in the
torque converter and eliminating slip of the converter. Achieves comfortable driving with slip control of the
torque converter clutch.
• The oil pressure feed circuit for the torque converter clutch piston chamber is connected to the torque con- verter clutch control valve. The torque converter clut ch control valve is switched by the torque converter
clutch solenoid valve with the signal from TCM. This controls the oil pressure circuit, which is supplied to the
torque converter clutch piston chamber, to the release side or engagement side.
• If the CVT fluid temperature is low or the vehicle is in fail-safe mode due to malfunction, lock-up control is
prohibited.
Lock-up engagement
In lock-up engagement, the torque converter clutch solenoi d valve makes the torque converter clutch control
valve locked up to generate the lock-up apply pressure. This pushes the torque converter clutch piston for
engagement.
Lock-up release condition
In lock-up release, the torque converter clutch solenoid valve makes the torque converter clutch control valve
non-locked up to drain the lock-up apply pressure. This does not engage the torque converter clutch piston.
IDLE NEUTRAL CONTROL
JSDIA1865GB
Revision: August 2015 2016 Versa Note
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SYSTEMTM-87
< SYSTEM DESCRIPTION > [CVT: RE0F11A]
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IDLE NEUTRAL CONTROL : System DescriptionINFOID:0000000012431025
SYSTEM DIAGRAM
DESCRIPTION
If a driver has no intention of starting the vehicle in D position, TCM operates the low brake solenoid valve and
controls the oil pressure of the low brake to be low pressure. Therefore, the low brake is in the release (slip)
status and the power transmission route of transaxle is the same status as the N position. In this way, the tran-
saxle is in idling status and load to the engine can be reduced to improve fuel economy.
NOTE:
JSDIA2535GB
Revision: August 2015 2016 Versa Note
cardiagn.com
TM-88
< SYSTEM DESCRIPTION >[CVT: RE0F11A]
SYSTEM
Provides idle neutral control when st
op/start operation is not performed.
Idle Neutral Control Start Condition
Idle neutral control is started when all of the following conditions are fulfilled. However, during idle neutral con-
trol, idle neutral control is stopped when any of the following conditions is not met or idle neutral control contin-
ues 30 seconds.
NOTE:
Stops or prohibits the idle neutral control when the TC M and ECM detect that the vehicle is in one of the fol-
lowing conditions.
• Engine coolant temperature and CVT fluid temperature are the specified temperature or more, or the speci-
fied temperature or less.
• When a transaxle malfunction occurs.
• When the vehicle detects DTC and is in the fail-safe mode.
• When idle speed increases due to heavy electric load*. *: When any one of rear window defogger switch, A/C s witch, headlamp, fog lamp is turned ON. In addition,
when the steering wheel is operated.
JPDIA1215GB
Driving environment : Flat road or road with mild gradient
Selector lever position : “D” position
Vehicle speed : 0 km/h (0 MPH)
Accelerator pedal position : 0.0/8
Brake pedal : Depressed
Engine speed : Idle speed
Turn signal lamp/hazard signal lamp : Not activated
Revision: August 2015 2016 Versa Note
cardiagn.com
TM-94
< SYSTEM DESCRIPTION >[CVT: RE0F11A]
DIAGNOSIS SYSTEM (TCM)
SELF DIAGNOSTIC RESULTS
Display Item List
Refer to
TM-110, "DTC Index".
DTC at 1st trip and method to read DTC
• DTC (P0705, P0711, P0720, etc.) is specified by SAE J2012/ISO 15031-6.
• DTC and DTC at 1st trip are displayed on “Self Diagnostic results” of CONSULT.
When DTC is currently detected, “CRNT” is displayed. If “PAST” is displayed, it shows a malfunction
occurred in the past.The trip number of drive without malfunction of concerned DTC can be confirmed with
“IGN counter” inside “FFD”.
• When the DTC at the 1st trip is detected, the “timing” is displayed as “1t”.
DTC deletion method
NOTE:
• If the battery terminal is disconnected, the TCM memory is erased. (The disconnection time varies from sev- eral seconds to several hours.
• If the ignition switch is left ON after repair, turn OFF the ignition switch and wait for 10 seconds or more.
Then, turn the ignition ON again. (Engine stop)
1. Touch “TRANSMISSION” of CONSULT.
2. Touch “Self Diagnostic Result”.
3. Touch “Erase”. (DTC memorized in TCM is erased.)
IGN counter
The ignition counter is displayed in “FFD” and the number of times of satisfied “Driving condition A” is dis-
played after normal recovery of DTC. Refer to TM-91, "
DIAGNOSIS DESCRIPTION : Counter System".
• If malfunction (DTC) is currently detected, “0” is displayed.
• After normal recovery, every time “Driving condition A” is satisfied, the display value increases from 1 → 2 →
3...38 → 39.
• When MIL turns OFF due to the malfunction and t he counter reaches 40, the DTC is erased.
NOTE:
The counter display of “40” cannot be checked.
DATA MONITOR
NOTE:
The following table includes information (items) inapplicable to this vehicle. For information (items) applicable
to this vehicle, refer to CONSULT display items.
× : Application : Optional selection
CAN Diagnosis Support Mon-
itor It monitors the status of CAN communication.
ECU Identification Display the ECU identification nu mber (part number etc.) of the selected system.
CALIB DATA The calibration data status of TCM can be checked.
Conditions
Function
Monitored item(Unit)Monitor item selection
Remarks
MAIN SIG-
NALS ECU IN-
PUT SIG- NALS
VSP SENSOR (km/h or mph) ×Displays the vehicle speed calculated from the CVT out-
put shaft speed.
ESTM VSP SIG (km/h or mph) ×Displays the vehicle spee
d signal (ABS) received
through CAN communication.
PRI SPEED SEN (rpm) ×Displays the primary pulley speed calculated from the
pulse signal of the primary speed sensor.
SEC REV SENSOR (rpm) ×Displays the secondary pulley speed calculated from the
pulse signal of the secondary speed sensor.
VHCL/S SE (REV) (rpm) ×Displays the CVT output shaft speed calculated from the
pulse signal of the output speed sensor.
ENG SPEED SIG (rpm) ×Displays the engine speed received through CAN com-
munication.
Revision: August 2015
2016 Versa Note
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TM-96
< SYSTEM DESCRIPTION >[CVT: RE0F11A]
DIAGNOSIS SYSTEM (TCM)
LINE PRS
(MPa) Displays the target oil pressure of the line pressure sole-
noid valve calculated from oil pressure processing of
gear shift control.
TRGT PRI PRESSURE (MPa) Displays the target oil pressure of the primary pressure
solenoid valve calculated from oil pressure processing of
gear shift control.
TRGT HC/RB PRESS (MPa) Displays the target oil pressure of the high clutch & re-
verse brake solenoid valve calculated from oil pressure
processing of gear shift control.
TRGT LB PRESSURE (MPa) Displays the target oil pressure of the low brake solenoid
valve calculated from oil pressure processing of gear
shift control.
ISOLT1 (A)× Displays the command current from TCM to the torque
converter clutch solenoid valve.
ISOLT2 (A) ×Displays the command current from TCM to the line
pressure solenoid valve.
PRI SOLENOID (A)× Displays the command current from TCM to the primary
pressure solenoid valve.
HC/RB SOLENOID (A)× Displays the command current from TCM to the high
clutch& reverse brake solenoid valve.
L/B SOLENOID (A)× Displays the command current from TCM to the low
brake solenoid valve.
SOLMON1 (A)×× Monitors the command current from TCM to the torque
converter clutch solenoid valve and displays the moni-
tored value.
SOLMON2 (A)×× Monitors the command current from TCM to the line
pressure solenoid valve and displays the monitored val-
ue.
PRI SOL MON (A)×× Monitors the command current from TCM to the primary
pressure solenoid valve and displays the monitored val-
ue.
HC/RB SOL MON (A)×× Monitors the command current from TCM to the high
clutch& reverse brake solenoid valve and displays the
monitored value.
L/B SOL MON (A)×× Monitors the current command from TCM to the low
brake solenoid valve and displays the monitored value.
D POSITION SW (On/Off) ×Displays the operation status of the transmission range
switch (D position).
N POSITION SW (On/Off) ×Displays the operation status of the transmission range
switch (N position).
R POSITION SW (On/Off) ×Displays the operation status of the transmission range
switch (R position).
P POSITION SW (On/Off) ×Displays the operation status of the transmission range
switch (P position).
BRAKESW (On/Off)×× Displays the reception status of the stop lamp switch sig-
nal received through CAN communication.
L POSITION SW (On/Off) ×Displays the operation status of the transmission range
switch (L position).
IDLE SW (On/Off)×× Displays the reception status of the closed throttle posi-
tion signal received through CAN communication.
SPORT MODE SW (On/Off)×× Displays the reception status of the overdrive control
switch signal received through CAN communication.
Monitored item
(Unit)Monitor item selection
Remarks
MAIN SIG-
NALS ECU IN-
PUT SIG-
NALS
Revision: August 2015 2016 Versa Note
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DIAGNOSIS SYSTEM (TCM)TM-97
< SYSTEM DESCRIPTION > [CVT: RE0F11A]
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STRDWNSW (On/Off) ו Displays the operation status of the paddle shifter
(down switch).
• It is displayed although not equipped.
STRUPSW (On/Off) ו Displays the operation status of the paddle shifter (up
switch).
• It is displayed although not equipped.
DOWNLVR (On/Off) ו Displays the operation status of the selector lever
(down switch).
• It is displayed although not equipped.
UPLVR (On/Off) ו Displays the operation status of the selector lever (up
switch).
• It is displayed although not equipped.
NONMMODE (On/Off) ו Displays if the selector lever position is not at the man-
ual shift gate.
• It is displayed although not equipped.
MMODE (On/Off) ו Displays if the selector lever position is at the manual
shift gate.
• It is displayed although not equipped.
INDLRNG (On/Off) Displays the transmission status of the shift position (L
position) signal transmitted through CAN communica-
tion.
INDDRNG (On/Off) Displays the transmission status of the shift position (D
position) signal transmitted through CAN communica-
tion.
INGNRNG (On/Off) Displays the transmission status of the shift position (N
position) signal transmitted through CAN communica-
tion.
INGRRNG (On/Off) Displays the transmission status of the shift position (R
position) signal transmitted through CAN communica-
tion.
INGPRNG (On/Off) Displays the transmission status of the shift position (P
position) signal transmitted through CAN communica-
tion.
CVT LAMP (On/Off) Displays the transmission status of the OD OFF indicator
lamp signal transmitted through CAN communication.
SPORT MODE IND (On/Off) Displays the transmission status of the OD OFF indicator
lamp signal transmitted through CAN communication.
MMODE IND (On/Off) • Displays the transmission status of the manual mode
signal transmitted through CAN communication.
• It is displayed although not equipped.
VDC ON (On/Off) ו Displays the reception status of the VDC (ESP) oper-
ation signal received through CAN communication.
• It is displayed although not equipped.
TCS ON (On/Off) ו Displays the reception status of the TCS operation sig-
nal received through CAN communication.
• It is displayed although not equipped.
ABS FAIL SIGNAL (On/Off) ×Displays the reception status of the ABS malfunction sig-
nal received through CAN communication.
ABS ON (On/Off) ×Displays the reception status of the ABS operation signal
received through CAN communication.
RANGE ×Displays the gear position recognized by TCM.
M GEAR POS ×Display the target gear of manual mode
Monitored item
(Unit)Monitor item selection
Remarks
MAIN SIG-
NALS ECU IN-
PUT SIG-
NALS
Revision: August 2015 2016 Versa Note
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