TM-78
< SYSTEM DESCRIPTION >[CVT: RE0F11A]
SYSTEM
·*: If these input/output signals show erro
rs, TCM activates the fail-safe function.
CVT CONTROL SYSTEM : Fail-safeINFOID:0000000012431019
TCM has a fail-safe mode. The mode functions so that operation can be continued even if the signal circuit of
the main electronically contro lled input/output parts is damaged.
If the vehicle shows following behaviors including “poor acceleration”, a malfunction of the applicable system
is detected by TCM and the vehicle may be in a fail-sa fe mode. At this time, check the DTC code and perform
inspection and repair according to the malfunction diagnosis procedures.
Fail-safe function
Output Line pressure solenoid valve
××× ×
Primary pressure solenoid valve ××
Torque converter clutch solenoid
valve ××
High clutch & reverse brake solenoid
valve ×××
Low brake solenoid valve ×××
Shift position indicator
(CAN communication) ×
OD OFF indicator lamp
(CAN communication) ×
Control Item
Shift controlLine pressure
control Select control Lock-up con-
trol Fail-safe func-
tion *
DTC Vehicle behavior Conditions of vehicle
P062F Not changed from normal driving —
P0705 • Shift position indicator on combination meter is not dis-
played.
• Selector shock is large
•Start is slow
• Acceleration is slow
• Lock-up is not performed —
P0706 • Shift position indicator on combination meter is not dis-
played.
• Selector shock is large
•Start is slow
• Acceleration is slow
• Lock-up is not performed —
P0711 Acceleration is slow
Engine coolant temperature when engine start: Temp. ≥
10 °C (50 °F)
• Selector shock is large
•Start is slow Engine coolant temperature when engine start: −
35°C ( −
31 °F) ≤Te m p . < 1 0 °C (50 °F)
• Selector shock is large
•Start is slow Engine coolant temperature when engine start: Temp. <
−
35 °C ( −31 °F)
P0712 Acceleration is slow
Engine coolant temperature when engine start: Temp. ≥
10 °C (50 °F)
• Selector shock is large
•Start is slow Engine coolant temperature when engine start: −
35°C ( −
31 °F) ≤Te m p . < 1 0 °C (50 °F)
• Selector shock is large
•Start is slow Engine coolant temperature when engine start: Temp. <
−
35 °C ( −31 °F)
Revision: August 2015 2016 Versa Note
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SYSTEMTM-79
< SYSTEM DESCRIPTION > [CVT: RE0F11A]
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P0713 Acceleration is slow
Engine coolant temperature when engine start: Temp.
≥
10 °C (50 °F)
• Selector shock is large
•Start is slow Engine coolant temperature when engine start: −
35°C ( −
31 °F) ≤Te m p . < 1 0 °C (50 °F)
• Selector shock is large
•Start is slow Engine coolant temperature when engine start: Temp. <
−
35 °C ( −31 °F)
P0715 • Selector shock is large
•Start is slow
• Acceleration is slow
• Vehicle speed is not increased
• Lock-up is not performed —
P0720 • Selector shock is large
•Start is slow
• Acceleration is slow
• Lock-up is not performed —
P0740 Lock-up is not performed —
P0743 Lock-up is not performed —
P0744 Lock-up is not performed —
P0746 • Selector shock is large
•Start is slow
• Acceleration is slow
• Vehicle speed is not increased
• Lock-up is not performed
—
P0846 •Start is slow
• Acceleration is slow —
P0847 Acceleration is slow —
P0848 •Start is slow
• Acceleration is slow —
P0863 Not changed from normal driving —
P0890 • Selector shock is large
•Start is slow
• Acceleration is slow
• Lock-up is not performed —
P0962 • Selector shock is large
•Start is slow
• Acceleration is slow
• Lock-up is not performed
—
P0963 • Selector shock is large
•Start is slow
• Acceleration is slow
• Lock-up is not performed —
P0965 • Selector shock is large
•Start is slow
• Acceleration is slow
• Lock-up is not performed —
P0966 • Selector shock is large
•Start is slow
• Acceleration is slow
• Lock-up is not performed —
P0967 • Selector shock is large
•Start is slow
• Acceleration is slow
• Lock-up is not performed —
P0998 •Start is slow
• Lock-up is not performed —
DTC
Vehicle behavior Conditions of vehicle
Revision: August 2015 2016 Versa Note
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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-84
< SYSTEM DESCRIPTION >[CVT: RE0F11A]
SYSTEM
Gear shifting is performed in all shifting ranges from the lowest to the
highest gear ratio.
D Position (OD OFF)
The gear ratio is generally high by limiting the shifting range on the
high side, and this always generates a large driving power.
L Position
By limiting the shifting range only to the lowest of the gear ratio, a
large driving force and engine brake are obtained.
Hill Climbing And Descending Control
If a downhill is detected with the accelerator pedal is released, the system performs dow
nshift to increase the
engine brake force so that vehicle may not be accelerated more than necessary. If a climbing hill is detected,
the system improves the acceleration performance in re-acceleration by limiting the gear shift range on the
high side.
NOTE:
For engine brake control on a downhill, the control can be stopped with CONSULT.
Control In Acceleration
From change of the vehicle speed or accelerator pedal posit ion, the acceleration request level of the driver or
driving scene is evaluated. In start or acceleration during driving, the gear shift characteristics with linearity of
revolution increase and vehicle speed increase are gained to improve the acceleration feel.
SELECT CONTROL
SCIA1953E
SCIA8229E
SCIA8240E
JSDIA2060GB
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
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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
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SYSTEMTM-89
< SYSTEM DESCRIPTION > [CVT: RE0F11A]
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Idle Neutral Contro
l Resume Condition
When the idle neutral control finishes, if the vehicle is driven at more than the specified speed and the idle
neutral control start conditions are satisfied, the idle neut ral control starts again. If the vehicle has a malfunc-
tion, the idle neutral control does not start.
Revision: August 2015 2016 Versa Note
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DIAGNOSIS SYSTEM (TCM)TM-91
< SYSTEM DESCRIPTION > [CVT: RE0F11A]
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DIAGNOSIS SYSTEM (TCM)
DIAGNOSIS DESCRIPTION
DIAGNOSIS DESCRIPTION : 1 Tr ip Detection Diagnosis and 2 Trip Detection Diagno-
sis
INFOID:0000000012431028
NOTE:
“Start the engine and turn OFF the ignition switch after warm-up.” This is defined as 1 trip.
1 TRIP DETECTION DIAGNOSIS
When initial malfunction is detected, TCM memorize s DTC. In these diagnoses, some illuminate MIL and
some do not. Refer to TM-110, "
DTC Index".
2 TRIP DETECTION DIAGNOSIS
When initial malfunction is detected, TCM memorizes DTC of the 1st trip. MIL does not light at this stage. <1
trip>
If the same malfunction is detected again in next drivi ng, TCM memorizes DTC. When DTC is memorized, MIL
lights. <2 trip>
“Trip” of the “2 trip detection diagnosis” indicates the driving mode that executes self-diagnosis during driving.
×: Check possible —: Check not possible
DIAGNOSIS DESCRIPTION : DTC and DTC of 1st TripINFOID:0000000012431029
2 TRIP DETECTION DIAGNOSIS THAT ILLUMINATES MIL
• The DTC number of the 1st trip is the same as the DTC number.
• When a malfunction is detected at the 1st trip, TCM memo rizes DTC of the 1st trip. MIL does not light at this
stage. If the same malfunction is not detected at t he 2nd trip (conforming to necessary driving conditions),
DTC at the 1st trip is erased from TCM. If the same malfunction is detected at the 2nd trip, TCM memorizes
DTC and MIL lights at the same time.
• The DTC of the 1st trip is specified in Service $01 of SAE J1979/ISO 15031-5. Since detection of DTC at the
1st trip does not illuminate MIL, warning for a problem is not given to a driver.
• For procedure to delete DTC and 1st trip DTC from TCM, refer to TM-93, "
CONSULT Function".
• If DTC of the 1st trip is detected, it is necessary to check the cause according to the “Diagnosis flow”. Refer to TM-122, "
Flowchart of Trouble Diagnosis".
DIAGNOSIS DESCRIPTION : Malfunction Indicator Lamp (MIL)INFOID:0000000012431030
• TCM not only detects DTC, but also sends the MI L signal to ECM through CAN communication. ECM sends
the MIL signal to the combination meter through CAN communication according to the signal, and illumi-
nates MIL.
• For malfunction indicator lamp (MIL) description, refer to EC-57, "
DIAGNOSIS DESCRIPTION : Malfunction
Indicator Lamp (MIL)".
DIAGNOSIS DESCRIPTION : Counter SystemINFOID:0000000012431031
RELATION BETWEEN DTC AT 1ST TRIP/DTC/MIL AND DRIVING CONDITIONS (FOR 2 TRIP DE-
TECTION DIAGNOSIS THAT ILLUMINATES MIL)
• When initial malfunction is detected, TCM memorizes DTC of the 1st trip. MIL does not light at this stage.
• If the same malfunction is detected at the 2nd trip, TCM memorizes DTC and MIL lights at the same time.
• Then, MIL goes after driving the vehicle for 3 tr ips under “Driving condition B” without malfunction.
• DTC is displayed until 40 trips of “Driving condition A” are satisfied without detecting the same malfunction.
DTC is erased when 40 trips are satisfied.
Item DTC at the 1st trip
DTCMIL
Display at the 1st trip Display at the
2nd trip Display at the
1st trip Display at the
2nd trip Illumination at
the 1st trip Illumination at
the 2nd trip
1 trip detection diagnosis
(Refer to TM-110, "
DTC Index")——
×— ×—
2 trip detection diagnosis
(Refer to TM-110, "
DTC Index") ×
—— ×— ×
Revision: August 2015 2016 Versa Note
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