2011 NISSAN LATIO ignition

TROUBLE DIAGNOSISCVT-43
< SERVICE INFORMATION > [RE0F08B]
D
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G H
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B
CVT
N
O P
3.CHECK “P” POSITION FUNCTION
1. Move selector lever to “P” position.
2. Turn ignition switch OFF.
3. Release parking brake.
4. Push vehicle forward or backward.
5. Apply parking brake.
Does vehicle move when it is pushed forward or backward?
YES >> Mark the box CVT-145, "In "P" Position, Vehicle Moves Forward or Backward When Pushed" on
the CVT-31, "
How to Perform Trouble Diagnosis for Quick and Accurate Repair" . Continue “Road
Te s t ” .
NO >> GO TO 4.
4.CHECK “N” POSITION FUNCTION
1. Start engine.
2. Move selector lever to “N” position.
3. Release parking brake.
Does vehicle move forward or backward?
YES >> Mark the box CVT-146, "In "N" Position, Vehicle Moves" on the CVT-31, "How to Perform Trouble
Diagnosis for Quick and Accurate Repair" . Continue “Road Test”.
NO >> GO TO 5.
5.CHECK SHIFT SHOCK
1. Apply foot brake.
2. Move selector lever to “R” position.
Is there large shock when changing from
“N” to “R” position?
YES >> Mark the box CVT-146, "Large Shock "N" → "R" Position" on the CVT-31, "How to Perform Trou-
ble Diagnosis for Quick and Accurate Repair" . Continue “Road Test”.
NO >> GO TO 6.
6.CHECK “R” POSITION FUNCTION
Release foot brake for several seconds.
Does vehicle creep backward w hen foot brake is released?
YES >> GO TO 7.
NO >> Mark the box CVT-147, "
Vehicle Does Not Creep Backward in "R" Position" on the CVT-31, "How
to Perform Trouble Diagnosis for Quick and Accurate Repair" . Continue “Road Test”.
7.CHECK “D”, “L” POSITIONS FUNCTION
Move selector lever to “D” and “L” positions and check if vehicle creeps forward.
Does vehicle creep forward in all positions?
YES >> Go to CVT-43, "Cruise Test" .
NO >> Stop “Road Test”. Mark the box on the CVT-31, "
How to Perform Trouble Diagnosis for Quick and
Accurate Repair" . Go to CVT-148, "Vehicle Does Not Creep Forward in "D" or "L" Position" .
Cruise TestINFOID:0000000005928757
1.CHECK VEHICLE SPEED WHEN SHIFTING GEARS — PART 1
1. Drive vehicle for approximately 10 minutes to warm engine oil and CVT fluid up to operating temperature.
2. Park vehicle on flat surface.
3. Move selector lever to “P” position.
4. Start engine.
5. Move selector lever to “L” position. CVT fluid operating temperature: 50 - 80
°C (122 - 176° F)
Revision: May 2010 2011 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:0000000005928759
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: May 2010 2011 Versa

TROUBLE DIAGNOSISCVT-47
< SERVICE INFORMATION > [RE0F08B]
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M A
B
CVT
N
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14 Y ROM assembly ——
15 G ROM assembly ——
18 GR P RANGE SW Selector lever in “P” po
sition. Battery voltage
Other than above position. 0 V
19 R Power supply —
Battery voltage
—0 V
20 W Step motor C 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
21 P Step motor D 10.0 msec
22 BR R RANGE SW Selector lever in “R” position.
Battery voltage
Other than above position. 0 V
25 B Ground Always0 V
26 W N RANGE SW Selector lever in “N” position.
Battery voltage
Other than above position. 0 V
28 Y Power supply
(memory back-
up) Always
Battery voltage
29 R Secondary
speed sensor
When driving [“D” position, 20 km/h (12 MPH)].
570 Hz
30 Y Power supply
(memory back-
up) Always
Battery voltage
31 LG K-LINE ——
37 L Secondary pres-
sure sensor
and “N” position idle
1.0 V
38 V Primary speed
sensor When driving [“L” position, 20 km/h (12 MPH)].
1250 Hz
41* — —— ——
42 LG Sensor ground Always 0 V
43 SB D RANGE SW Selector lever in “D” position.
Battery voltage
Other than above position. 0 V
44 W L RANGE SW Selector lever in “” position.
Battery voltage
Other than above position. 0 V
Te r m i n a l
Wire
color Item
ConditionData (Approx.)
Revision: May 2010 2011 Versa

CVT-48
< SERVICE INFORMATION >[RE0F08B]
TROUBLE DIAGNOSIS
*: This harness is not used.
CONSULT-III Functi
on (TRANSMISSION)INFOID:0000000005928760
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: May 2010 2011 Versa

CVT-56
< SERVICE INFORMATION >[RE0F08B]
U1000 CAN COMM CIRCUIT
U1000 CAN COMM CIRCUIT
DescriptionINFOID:0000000005928762
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:0000000005928763
• 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:0000000005928764
Harness or connectors
(CAN communication line is open or shorted.)
DTC Confirmation ProcedureINFOID:0000000005928765
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: May 2010 2011 Versa

CVT-58
< SERVICE INFORMATION >[RE0F08B]
U1000 CAN COMM CIRCUIT
Diagnosis Procedure
INFOID:0000000005928767
1.CHECK CAN COMMUNICATION CIRCUIT
With CONSULT-III1. Turn ignition switch ON and start engine.
2. Select “SELF-DIAG RESULTS” mode fo r “TRANSMISSION” with CONSULT-III.
Is any malfunction of the
“U1000” indicated?
YES >> Print out CONSULT-III screen, go to LAN section. Refer to LAN-26, "CAN System Specification
Chart" .
NO >> INSPECTION END
Revision: May 2010 2011 Versa

U1010 CONTROL UNIT (CAN)CVT-59
< SERVICE INFORMATION > [RE0F08B]
D
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U1010 CONTROL UNIT (CAN)
DescriptionINFOID:0000000005928768
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 communica tion 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 independent). 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.
On Board Diagnosis LogicINFOID:0000000005928769
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “U1010” with CONSULT-III is detected when TCM cannot communicate to other control units.
Possible CauseINFOID:0000000005928770
Harness or connectors
(CAN communication line is open or shorted.)
DTC Confirmation ProcedureINFOID:0000000005928771
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always 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 for “TRANSMISSION” with CONSULT-III.
3. Start engine and wait for at least 6 seconds.
4. If DTC is detected, go to CVT-59, "
Diagnosis Procedure".
WITH GST
Follow the procedure “WITH CONSULT-III”.
Diagnosis ProcedureINFOID:0000000005928772
1.CHECK DTC
With CONSULT-III
1. Turn ignition switch ON. (Do not start engine.)
2. Select “SELF-DIAG RESULTS” mode for “TRANSMISSION” with CONSULT-III.
3. Touch “ERASE”.
4. Turn ignition switch OFF and wait for at least 10 seconds.
5. Perform “DTC confirmation procedure”. Refer to CVT-59, "
DTC Confirmation Procedure".
Is any malfunction of the
“U1010” indicated?
YES >> Replace the TCM. Refer to CVT-159, "Removal and Installation".
NO >> INSPECTION END
Revision: May 2010 2011 Versa

CVT-60
< SERVICE INFORMATION >[RE0F08B]
P0703 BRAKE SWITCH B
P0703 BRAKE SWITCH B
DescriptionINFOID:0000000005928773
ON, OFF status of the stop lamp switch is sent vi
a the CAN communication from the combination meter to
TCM using the signal.
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000005928774
On Board Diagn osis LogicINFOID:0000000005928775
• This is not an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0703” with CONSULT-III is det ected when the stop lamp switch does not switch to
ON and OFF.
- The stop lamp switch does not switch to ON, OFF.
Possible CauseINFOID:0000000005928776
• Harness or connectors (Stop lamp switch, and combination meter circuit are open or shorted.)
(CAN communication line is open or shorted.)
• Stop lamp switch
DTC Confirmation ProcedureINFOID:0000000005928777
CAUTION:
Always drive vehicle at a safe speed.
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.
4. Start vehicle for at least 3 consecutive seconds.
5. If DTC is detected, go to CVT-60, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005928778
1.CHECK CAN COMMUNICATION LINE
Perform the self-diagnosis check. Refer to CVT-48, "
CONSULT-III Function (TRANSMISSION)".
Is any malfunction of the
“U1000” indicated?
YES >> Check CAN communication line. Refer to CVT-56.
NO >> GO TO 2.
2.CHECK STOP LAMP SWITCH CIRCUIT
With CONSULT-III
1. Turn ignition switch ON. (Do not start engine.)
2. Select “ECU INPUT SIGNALS” in “DATA MONI TOR” mode for “TRANSMISSION” with CONSULT-III.
3. Read out ON/OFF switching action of the “BRAKE SW”.
Item name Condition Display value
BRAKE SW Depressed brake pedal
on
Released brake pedal off
Revision: May 2010 2011 Versa