NISSAN LATIO 2010 Service Repair Manual

CVT-48
< SERVICE INFORMATION >[RE0F08B]
TROUBLE DIAGNOSIS
*: This harness is not used.
CONSULT-III Functi
on (TRANSMISSION)INFOID:0000000005397797
CONSULT-III can display each diagnostic item using the diagnostic test modes shown below.
FUNCTION
CONSULT-III REFERENCE VALUE
46 O Sensor power —
5.0 V
— 0 V
47 G CVT fluid tem-
perature sensor When CVT fluid temperature is 20
°C (68 °F) 2.0 V
When CVT fluid temperature is 80 °C (176 °F) 1.0 V
48 B Ground Always 0 V
Te r m i n a l
Wire
color Item
ConditionData (Approx.)
Diagnostic test mode Function
Work support This mode enables a technician to adjust some devices faster and more accurately by following the in-
dications on CONSULT-III.
Self-diagnostic results Self-diagnostic results can be read and erased quickly.
Data monitor Input/Output data in the TCM can be read.
CAN diagnostic support mon-
itor The results of transmit/receive diagnosis of CAN communication can be read.
CALIB data Characteristic information for TCM and CVT assembly can be read.
Function test Performed by CONSULT-III instead of a technician to determine whether each system is “OK” or “NG”.
ECU part number TCM part number can be read.
Item name Condition Display value (Approx.)
VSP SENSOR During driving Approximately matches the speedometer
reading.
ESTM VSP SIG*
PRI SPEED SEN During driving (lock-up ON) Approximately matches the engine speed.
ENG SPEED SIG Engine running Closely matches the tach ometer reading.
SEC HYDR SEN “N” position idle 1.0 V
ATF TEMP SEN When CVT fluid temperature is 20
°C (68 °F). 2.0 V
When CVT fluid temperature is 80 °C (176 °F). 1.0 V
VIGN SEN Ignition switch: ON Battery voltage
VEHICLE SPEED During driving Approximately matches the speedometer
reading.
PRI SPEED During driving (lock-up ON) Approximately matches the engine speed.
SEC SPEED During driving 50 X Approximately matches the speedom-
eter reading.
ENG SPEED Engine running Closely matches the tachom eter reading.
GEAR RATIO During driving 2.56 - 0.43
ACC PEDAL OPEN Released accelerator pedal - Fully depressed
accelerator pedal 0.0/8 - 8.0/8
SEC PRESS “N” position idle 0.8 MPa
Revision: January 20102010 Versa

TROUBLE DIAGNOSISCVT-49
< SERVICE INFORMATION > [RE0F08B]
D
E
F
G H
I
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K L
M A
B
CVT
N
O P
STM STEP During driving (− 20) - (+180) step
ISOLT1 Lock-up OFF
0.0 A
Lock-up ON 0.7 A
ISOLT2 Release your foot from the accelerator pedal. 0.8 A
Press the accelerator pedal all the way down. 0.0 A
ISOLT3 Secondary pressure low - Secondary pressure
high. 0.8 - 0.0 A
SOLMON1 Lock-up OFF
0.0 A
Lock-up ON 0.7 A
SOLMON2 “N” position idle
0.8 A
When stalled 0.3 - 0.6 A
SOLMON3 “N” position idle
0.6 - 0.7 A
When stalled 0.4 - 0.6 A
P POSITION SW Selector lever in “P” position
on
Other than the above position off
R POSITION SW Selector lever in “R” position
on
Other than the above position off
N POSITION SW Selector lever in “N” position
on
Other than the above position off
D POSITION SW Selector lever in “D” position
on
Other than the above position off
L POSITION SW Selector lever in “L” position
on
Other than the above position off
BRAKE SW Depressed brake pedal
on
Released brake pedal off
FULL SW Fully depressed accelerator pedal
on
Released accelerator pedal off
IDLE SW Released accelerator pedal
on
Fully depressed accelerator pedal off
SPORT MODE SW While pushing overdrive cancel switch
on
Other conditions off
INDDRNG Selector lever in “D” position
on
Selector lever in other positions off
INDLRNG Selector lever in
“L” position on
Selector lever in other positions off
INDNRNG Selector lever in “N” position
on
Selector lever in other positions off
INDRRNG Selector lever in “R” position
on
Selector lever in other positions off
INDPRNG Selector lever in “P” position
on
Selector lever in other positions off
SMCOIL D
During driving Changes on ⇔ off.
SMCOIL C
SMCOIL B
SMCOIL A Item name
Condition Display value (Approx.)
Revision: January 20102010 Versa

CVT-50
< SERVICE INFORMATION >[RE0F08B]
TROUBLE DIAGNOSIS
*: Models without ABS
does not indicate.
WORK SUPPORT MODE
Display Item List
Engine Brake Adjustment
CAUTION:
Mode of “+1”“0”“-1”“-2”“OFF” can be selected by pressing the “UP”“DOWN” on CONSULT-III screen.
However, do not select mode other th an “0” and “OFF”. If the “+1” or “-1” or “-2” is selected, that
might cause the irregular driveability.
Check CVT Fluid Deterioration Date
CAUTION:
Touch “CLEAR” after changing CVT fluid, and then erase “CVTF DETERIORATION DATE”.
SELF-DIAGNOSTIC RESULT MODE
After performing self-diagnosis, place check marks for results on the CVT-31, "How to Perform Trouble Diag-
nosis for Quick and Accurate Repair" . Reference pages are provided following the items.
Display Items List
X: Applicable —: Not applicable
LUSEL SOL OUTSelector lever in “P
” and “N” positions on
Wait at least for 5 seconds with the selector lever
in “R”, “D” and “L” positions off
RANGE Selector lever in “N
” or “P” position. N·P
Selector lever in “R” position. R
Selector lever in “D” position. D
Selector lever in “L” position. L
Item name
Condition Display value (Approx.)
Item name Description
ENGINE BRAKE ADJ. The engine brake level setting can be canceled.
CONFORM CVTF DETERIORTN The CVT fluid deterioration level can be checked.
“ENGINE BRAKE LEVEL”
0: Initial set value (Engine brake level control is ac-
tivated)
OFF: Engine brake level control is deactivated.
“CVTF DETERIORATION DATE”
More than 210000: It is necessary to change CVT fluid.
Less than 210000: It is not necessary to change CVT fluid.
Items (CONSULT-
III screen terms) Malfunction is detected when... TCM self-di-
agnosis OBD-III (DTC)
Reference page
“TRANSMIS-
SION” with
CONSULT-III MIL indicator
lamp*1, “EN-
GINE” with
CONSULT-III or GST
CAN COMM CIR-
CUIT When TCM is not transmitting or receiving CAN communica-
tion signal for 2 seconds or more
U1000 U1000
CVT-56
CONTROL
UNIT(CAN)When detecting error during the initial diagnosis of CAN con-
troller of TCM
U1010 U1010
CVT-59
Revision: January 20102010 Versa

TROUBLE DIAGNOSISCVT-51
< SERVICE INFORMATION > [RE0F08B]
D
E
F
G H
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M A
B
CVT
N
O PBRAKE SWITCH B When the brake switch does not switch to ON or OFF P0703—CVT-60
T/M RANGE SEN-
SOR A When TCM does not receive the the correct voltage signal
(based on the gear position) from the switch
P0705 P0705
CVT-62
FLUID TEMP
SENSOR ADuring running, the CVT fluid temperature sensor signal volt-
age is excessively high or low
P0710 P0710
CVT-67
INPUT SPEED
SENSOR A• Primary speed sensor signal is not input due to an open cir-
cuit
• An unexpected signal is input when vehicle is being driven P0715 P0715
CVT-72
OUTPUT SPEED
SENSOR• Signal from secondary speed sensor not input due to open
or short circuit
• Unexpected signal input during running P0720 P0720
CVT-76
ENGINE SPEED• TCM does not receive the CAN communication signal from
the ECM
• Engine speed is too low while driving P0725 —
CVT-81
INCORRECT GR
RATIOUnexpected gear ratio detected
P0730—CVT-83
TORQUE CON-
VERTER Normal voltage not applied to solenoid due to open or short
circuit
P0740 P0740
CVT-84
TORQUE CON-
VERTER• CVT cannot perform lock-up even if electrical circuit is good
• TCM detects as irregular by comparing difference value
with slip rotation
• There is big difference engine speed and primary speed when TCM lock-up signal is on P0744 P0744
CVT-89
PC SOLENOID A• Normal voltage not applied to solenoid due to open or short
circuit
• TCM detects as irregular by comparing target value with monitor value P0745 P0745
CVT-91
PC SOLENOID AUnexpected gear ratio was detected in the LOW side due to
excessively low line pressure
P0746 P0746
CVT-96
PC SOLENOID BSecondary pressure is too high or too low compared with the
commanded value while driving
P0776 P0776
CVT-98
PC SOLENOID B• Normal voltage not applied to solenoid due to cut line,
short, or the like
• TCM detects as irregular by comparing target value with
monitor value P0778 P0778
CVT-100
FLUID PRESS
SEN/SW ASignal voltage of the secondary pressure sensor is too high
or too low while driving
P0840 P0840
CVT-105
FLUID PRESS
SEN/SW ASecondary fluid pressure is too high compared with the com-
manded value while driving
P0841
—CVT-109
FLUID PRESS
LOW Secondary fluid pressure is too low compared with the com-
manded value while driving
P0868
—C V T- 111
TCM • When the power supply to the TCM is cut OFF, for example
because the battery is removed, and the self-diagnosis
memory function stops
• This is not a malfunction message (Whenever shutting OFF a power supply to the TCM, this message appears on
the screen) P1701
—CVT-113
TP SENSOR TCM does not receive the proper accelerator pedal position
signals (input by CAN communication) from ECM
P1705
—CVT-117
Items (CONSULT-
III screen terms) Malfunction is detected when... TCM self-di-
agnosis OBD-III (DTC)
Reference page
“TRANSMIS-
SION” with
CONSULT-III MIL indicator
lamp*1, “EN-
GINE” with
CONSULT-III
or GST
Revision: January 20102010 Versa

CVT-52
< SERVICE INFORMATION >[RE0F08B]
TROUBLE DIAGNOSIS
*1: Refer to CVT-28, "Malfunction Indicator Lamp (MIL)" .
*2: Models without ABS does not indicate.
DATA MONITOR MODE
Display Items List
X: Standard, —: Not applicable, : Option
VEHICLE
SPEED*2• CAN communication with the
ABS actuator and the electric
unit (control unit) is malfunctioning
• There is a great difference between the vehicle speed sig-
nal from the ABS actuator and the electric unit (control
unit), and the vehicle speed sensor signal P1722
—CVT-119
SPEED SENSOR A rotation sensor error is detected because the gear does not
change in accordance with the position of the stepping motor
CAUTION:
One of the “P0720”, the “P0715” or the “P0725“ is dis-
played with the DTC at the same time P1723
—CVT-121
THROTTLE CON-
TROL SIG The electronically controlled throttle for ECM is malfunction-
ing
P1726
—CVT-123
SLCT SOLENOID • Normal voltage not applied to solenoid due to cut line,
short, or the like
• TCM detects as irregular by comparing target value with
monitor value P1740 P1740
CVT-124
LINE PRESS
CONTROLTCM detects the unexpected line pressure
P1745—CVT-128
STEP MOTOR Each coil of the step motor is not energized properly due to
an open or a short P1777 P1777
CVT-129
STEP MOTORThere is a great difference between the number of steps for
the stepping motor and for the actual gear ratio
P1778 P1778
CVT-133
NO DTC IS DE-
TECTED: FUR-
THER TESTING
MAY BE RE-
QUIREDNo NG item has been detected
XX —
Items (CONSULT-
III screen terms)
Malfunction is detected when... TCM self-di-
agnosis OBD-III (DTC)
Reference page
“TRANSMIS-
SION” with
CONSULT-III MIL indicator
lamp*1, “EN-
GINE” with
CONSULT-III
or GST
Monitored item (Unit) Monitor item selection
Remarks
ECU IN-
PUT SIG-
NALS MAIN SIG-
NALS SELEC-
TION
FROM
MENU
VSP SENSOR (km/h or mph) X—
ESTM VSP SIG (km/h or mph) X— Models without ABS does not indicate.
PRI SPEED SEN (rpm) X—
ENG SPEED SIG (rpm) X—
SEC HYDR SEN (V) X—
PRI HYDR SEN (V) X—
ATF TEMP SEN (V) X— CVT fluid temperature sensor
VIGN SEN (V) X—
Revision: January 20102010 Versa

TROUBLE DIAGNOSISCVT-53
< SERVICE INFORMATION > [RE0F08B]
D
E
F
G H
I
J
K L
M A
B
CVT
N
O P
VEHICLE SPEED (km/h or mph) —X Vehicle speed recognized by the TCM.
PRI SPEED (rpm) —X Primary pulley speed.
SEC SPEED (rpm) —— Secondary pulley speed.
ENG SPEED (rpm) —X
SLIP REV (rpm) —X Difference between engine speed and primary
pulley speed
GEAR RATIO —X
G SPEED (G) ——
ACC PEDAL OPEN (0.0/8) XX Degree of opening for accelerator recognized by
the TCM
For fail-safe operation, the specific value used for
control is displayed.
TRQ RTO ——
SEC PRESS (MPa) —X
PRI PRESS (MPa) —X
ATFTEMP COUNT —X Means CVT fluid temperature. Actual oil temper-
ature (
°C) cannot be checked unless a numeric
value is converted. Refer to CVT-11
.
DSR REV (rpm) — —
DGEAR RATIO — —
DSTM STEP (step) — —
STM STEP (step) — X
LU PRS (MPa) — —
LINE PRS (MPa) — —
TGT SEC PRESS (MPa) — —
ISOLT1 (A) — X Torque converter clutch solenoid valve output
current
ISOLT2 (A) — X Line pressure solenoid valve output current
ISOLT3 (A) — X Secondary pressure solenoid valve output cur-
rent
SOLMON1 (A) X X Torque converter clutch solenoid valve monitor
current
SOLMON2 (A) X X Line pressure solenoid valve monitor current
SOLMON3 (A) X X Secondary pressure solenoid valve monitor cur-
rent
P POSITION SW (on/off) X —
R POSITION SW (on/off) X —
N POSITION SW (on/off) X —
D POSITION SW (on/off) X —
L POSITION SW (on/off) X — Monitored item (Unit)
Monitor item selection
Remarks
ECU IN-
PUT SIG- NALS MAIN SIG-
NALS SELEC-
TION
FROM
MENU
Revision: January 20102010 Versa

CVT-54
< SERVICE INFORMATION >[RE0F08B]
TROUBLE DIAGNOSIS
BRAKE SW (on/off)
XX Stop lamp switch (Signal input with CAN comuni-
cation)
FULL SW (on/off) XX
Signal input with CAN communications
IDLE SW (on/off) XX
SPORT MODE SW (on/off) XX Overdrive control switch (Signal input with CAN
comunication)
STRDWNSW (on/off) X—
Not mounted but displayed.
STRUPSW (on/off)
X—
DOWNLVR (on/off) X—
UPLVR (on/off) X—
NONMMODE (on/off) X—
MMODE (on/off) X—
INDLRNG (on/off) —— “L” position indicator output
INDDRNG (on/off) —— “D” position indicator output
INDNRNG (on/off) —— “N” position indicator output
INDRRNG (on/off) —— “R” position indicator output
INDPRNG (on/off) —— “P” position indicator output
CVT LAMP (on/off) ——
SPORT MODE IND (on/off) ——
MMODE IND (on/off) —— Not mounted but displayed.
SMCOIL D (on/off) —— Step motor coil “D” energizing status
SMCOIL C (on/off) —— Step motor coil “C” energizing status
SMCOIL B (on/off) —— Step motor coil “B” energizing status
SMCOIL A (on/off) —— Step motor coil “A” energizing status
LUSEL SOL OUT (on/off) ——
REV LAMP (on/off) — X
STRTR RLY OUT (on/off) —— Starter relay
LUSEL SOL MON (on/off) ——
STRTR RLY MON (on/off) —— Starter relay
VDC ON (on/off) X—
Not mounted but displayed.
TCS ON (on/off) X—
ABS ON (on/off) X—
ACC ON (on/off) X— Not mounted but displayed.
RANGE —X Indicates position is recognized by TCM. Indi-
cates a specific value required for control when
fail-safe function is activated.
M GEAR POS —X
Monitored item (Unit)
Monitor item selection
Remarks
ECU IN-
PUT SIG- NALS MAIN SIG-
NALS SELEC-
TION
FROM
MENU
Revision: January 20102010 Versa

TROUBLE DIAGNOSISCVT-55
< SERVICE INFORMATION > [RE0F08B]
D
E
F
G H
I
J
K L
M A
B
CVT
N
O P
Diagnosis Procedure without CONSULT-IIIINFOID:0000000005397798
OBD-II SELF-DIAGNOSTIC PROCEDURE (WITH GST)
Refer to EC-618, "Generic Scan Tool (GST) Function".
Voltage (V) —— Displays the value measured by the voltage
probe.
Frequency (Hz) ——
The value measured by the pulse probe is dis-
played.
DUTY-HI (high) (%)
——
DUTY-LOW (low) (%) ——
PLS WIDTH-HI (ms) ——
PLS WIDTH-LOW (ms) ——
Monitored item (Unit)
Monitor item selection
Remarks
ECU IN-
PUT SIG- NALS MAIN SIG-
NALS SELEC-
TION
FROM
MENU
Revision: January 20102010 Versa

CVT-56
< SERVICE INFORMATION >[RE0F08B]
U1000 CAN COMM CIRCUIT
U1000 CAN COMM CIRCUIT
DescriptionINFOID:0000000005397799
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 vehi
cle, and each control unit shares information and links
with other control units during operation (not independent). In CAN communication, control units are con-
nected with 2 communication lines (CAN-H line, CAN-L li ne) allowing a high rate of information transmission
with less wiring. Each control unit transmits/recei ves data but selectively reads required data only.
On Board Diagnosis LogicINFOID:0000000005397800
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “U1000” with CONSULT-III is detected when TCM cannot communicate to other
control units.
Possible CauseINFOID:0000000005397801
Harness or connectors
(CAN communication line is open or shorted.)
DTC Confirmation ProcedureINFOID:0000000005397802
NOTE:
If “DTC Confirmation Procedure” has been previously performed, alw ays turn ignition switch OFF and
wait at least 10 seconds before performing the next test.
After the repair, touch “ERASE” on “SELF-DIAG RESULTS” and then perform the following procedure to con-
firm the malfunction is eliminated.
WITH CONSULT-III
1. Turn ignition switch ON. (Do not start engine.)
2. Select “DATA MONITOR” mode fo r “TRANSMISSION” with CONSULT-III.
3. Start engine and wait for at least 6 seconds.
4. If DTC is detected, go to CVT-58, "
Diagnosis Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-III”.
Revision: January 20102010 Versa

U1000 CAN COMM CIRCUITCVT-57
< SERVICE INFORMATION > [RE0F08B]
D
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G H
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M A
B
CVT
N
O P
Wiring Diagram - CVT - CANINFOID:0000000005397803
TCM TERMINALS AND REFERENCE VALUES
Refer to CVT-46, "TCM Terminal and Reference Value".
BCWA0668E
Revision: January 20102010 Versa