ignition NISSAN LATIO 2011 Service Workshop Manual

AT-156
< SERVICE INFORMATION >
BATT/FLUID TEMP SEN
BATT/FLUID TEMP SEN
DescriptionINFOID:0000000005928217
The A/T fluid temperature sensor detects the A/T fluid temperature and sends a signal to the TCM.
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000005928218
Remarks: Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000005928219
• This is not an OBD-II self-diagnostic item.
• Diagnostic trouble code “BATT/FLUID TEMP SEN” with CONSULT-III or 8th judgement flicker without CON-
SULT-III is detected when TCM receives an exce ssively low or high voltage from the sensor.
Possible CauseINFOID:0000000005928220
• Harness or connector
(The sensor circuit is open or shorted.)
• A/T fluid temperature sensor
DTC Confirmation ProcedureINFOID:0000000005928221
CAUTION:
• Always drive vehicle at a safe speed.
• If performing this “DTC Confirmation Procedure” again, always turn ignition switch OFF and wait at
least 10 seconds before continuing.
After the repair, perform the following proc edure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Start engine.
2. Select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
3. Touch “START”.
4. Drive vehicle under the following conditions.
SLCT LVR POSI: “D” position
VEHICLE SPEED: Higher than 20 km/h (12 MPH)
5. If the check result is NG, go to AT-158, "
Diagnosis Procedure" .
WITHOUT CONSULT-III
1. Start engine.
2. Drive vehicle under the following conditions.
Selector lever position: D position
Vehicle speed: higher than 20 km/h (12 MPH)
3. Perform self-diagnosis. Refer to AT-82, "
Diagnosis Procedure without CONSULT-III" .
4. If the check result is NG, go to AT-158, "
Diagnosis Procedure" .
Item nameCondition Display value
FLUID TEMP SE When A/T fluid temperature is 20
°C (68 °F). 1.5 V
When A/T fluid temperature is 80 °C (176 °F). 0.5 V
Revision: May 2010 2011 Versa

AT-158
< SERVICE INFORMATION >
BATT/FLUID TEMP SEN
Diagnosis Procedure
INFOID:0000000005928223
1.CHECK TCM POWER SOURCE
1. Turn ignition switch ON. (Do not start engine.)
2. Check voltage between TCM connector terminals and ground.
3. Turn ignition switch OFF.
4. Check voltage between TCM connector terminals and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2.DETECT MALFUNCTIONING ITEM
Check the following items:
• Harness for short or open between ignition switch and TCM terminals 10, 19
• Harness for short or open between battery and TCM terminal 28
• 10A fuse (No.13, located in the fuse block) and 10A fuse (No.49, located in the IPDM E/R)
• Ignition switch. Refer to PG-4
.
OK or NG
OK >> GO TO 9.
NG >> Repair or replace damaged parts.
3.CHECK INPUT SIGNAL OF A/ T FLUID TEMPERATURE SENSOR
With CONSULT-III
1. Start engine.
2. Select “TCM INPUT SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
3. Read out the value of “FLUID TEMP SE”.
Without CONSULT-III
1. Start engine.
Item Connec-
tor Terminal Judgement standard (Approx.)
Power supply E31 10
Battery voltage
19 Battery voltage
Power supply
(memory back-up) E32 28
Battery voltage
SCIA2656E
Item Connec-
tor Terminal Judgement standard (Approx.)
Power supply E31 10
0 V
19 0 V
Power supply
(memory back-up) E32 28
Battery voltage
SCIA2657E
Item name Condition Display value
FLUID TEMP
SE When A/T fluid temperature is 20
°C (68 °F). 1.5 V
When A/T fluid temperature is 80 °C (176 °F). 0.5 V
Revision: May 2010 2011 Versa

BATT/FLUID TEMP SENAT-159
< SERVICE INFORMATION >
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2. Check voltage TCM connector terminals while warming up A/T.
OK or NG
OK >> GO TO 9.
NG >> GO TO 4.
4.DETECT MALFUNCTIONING ITEM
Check the following items:
• Harness for short or open between TCM, ECM and terminal cord assembly
• Ground circuit for ECM Refer to EC-123, "
Wiring Diagram" (HR16DE), EC-633, "Wiring Diagram" (MR18DE).
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
5. CHECK FLUID TEMPERATURE SENSOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect the TCM connector.
3. Check resistance between terminals.
OK or NG
OK >> GO TO 9.
NG >> GO TO 6.
6. CHECK HARNESS BETWEEN TCM AND TERMINAL CORD ASSEMBLY HARNESS CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect terminal cord assemb ly harness connector and TCM connector.
3. Check continuity between terminal cord assembly harness con- nector terminal and TCM connector terminal.
4. If OK, check harness for short to ground and short to power.
5. If OK, check continuity between ground and transaxle assembly.
6. Reinstall any part removed.
OK or NG
Item Connec-
tor Terminal
Condition Judge-
ment stan-
dard
(Approx.)
A/T fluid
temperature
sensor E32 47 - 42 When A/T fluid tempera-
ture is 20
°C (68 °F). 1.5 V
When A/T fluid tempera-
ture is 80 °C (176 °F). 0.5 V
SCIA2658E
Item Connector Terminal Te m p e r a -
ture ° C (°F) Resistance
(Approx.)
A/T fluid
temperature
sensor E32
47 - 42AT- 3 8 0 , "
A/T Fluid Tempera-
ture Sensor"
SCIA2338E
Item
Connector Terminal Continuity
TCM E3242
Ye s
Terminal cord assembly
harness connector F30
7
TCM E3247
Ye s
Terminal cord assembly
harness connector F30
6
SCIA2660E
Revision: May 2010 2011 Versa

AT-160
< SERVICE INFORMATION >
BATT/FLUID TEMP SEN
OK >> GO TO 7.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
7.CHECK A/T FLUID TEMPERATURE SENSOR WITH TERMINAL CORD ASSEMBLY
1. Turn ignition switch OFF.
2. Disconnect terminal cord assembly connector in engine room.
3. Check resistance between terminal cord assembly terminals.
4. Reinstall any part removed.
OK or NG
OK >> GO TO 8.
NG >> Repair or replace damaged parts.
8.DETECT MALFUNCTIONING ITEM
1. Remove oil pan. Refer to AT-222, "
Control Valve Assembly and Accumulators" .
2. Check the following items:
- A/T fluid temperature sensor
• Check resistance between terminal cord assembly harness con- nector terminals while changing temperature as shown.
- Harness of terminal cord assembly for short or open
OK or NG
OK >> GO TO 9.
NG >> Repair or replace damaged parts.
9.CHECK DTC
Perform AT-156, "
DTC Confirmation Procedure" .
OK or NG
OK >> INSPECTION END
NG >> GO TO 10.
10.CHECK TCM
1. Check TCM input/output signal. Refer to AT-75, "
TCM Terminal and Reference Value" .
2. If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> INSPECTION END
NG >> Repair or replace damaged parts.
Component InspectionINFOID:0000000005928224
A/T FLUID TEMPERATURE SENSOR
Item Connector Terminal Temperature
[° C ( °F)] Resistance
(Approx.)
A/T fluid tem-
perature sensor F30 6 - 7 AT- 3 8 0 , "
A/T Fluid Temperature
Sensor"
SCIA4948E
Item Connector Terminal Temperature
[° C ( °F)] Resistance
(Approx.)
A/T fluid tem-
perature sensor F30 6 - 7 AT- 3 8 0 , "
A/T Fluid Temperature
Sensor"
SCIA7831E
Revision: May 2010
2011 Versa

AT-162
< SERVICE INFORMATION >
INPUT SPEED SENSOR A
INPUT SPEED SENSOR A
DescriptionINFOID:0000000005928225
The input speed sensor detects forward clutch drum rpm (revolutions per minute). It is located on the input
side of the automatic transaxle. The output speed sensor is located on the output side of the automatic tran-
saxle. With the two sensors, input and output rpms are accurately detected. As a result, optimal shift timing
during deceleration and shift quality can be improved.
CONSULT-III Reference Value in Data Monitor ModeINFOID:0000000005928226
Remarks: Specification data are reference values.
On Board Diagn osis LogicINFOID:0000000005928227
• This is not an OBD-II self-diagnostic item.
• Diagnostic trouble code “INPUT SPEED SENSOR A” wi th CONSULT-III or 10th judgement flicker without
CONSULT-III is detected when TCM does not rece ive the proper voltage signal from the sensor.
Possible CauseINFOID:0000000005928228
• Harness or connector
(The sensor circuit is open or shorted.)
• Input speed sensor
DTC Confirmation ProcedureINFOID:0000000005928229
CAUTION:
• Always drive vehicle at a safe speed.
• Be careful not to rev engine into the red zone on the tachometer.
• If performing this “DTC Confirmation Procedure” again, always turn ignition switch OFF and wait at
least 10 seconds before continuing.
After the repair, perform the following proc edure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Start engine.
2. Select “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
3. Touch “START”.
4. Drive vehicle under the following conditions for more than 5 seconds.
SLCT LVR POSI: “D” position
VEHICLE SPEED: Higher than 40 km/h (25 MPH)
ENGINE SPEED: High er than 1,500 rpm
THROTTLE POSI: Greater than 1.0/ 8 of the full throttle position
5. If the check result is NG, go to AT-164, "
Diagnosis Procedure" .
WITHOUT CONSULT-III
1. Start engine.
2. Drive vehicle under the following conditions for more than 5 seconds.
Selector lever position: “D” position
Vehicle speed: Higher than 40 km/h (25 MPH)
Engine speed: Higher than 1,500 rpm
Throttle position: 1.0/8 of the full throttle position
3. Perform self-diagnosis. Refer to AT-82, "
Diagnosis Procedure without CONSULT-III" .
4. If the check result is NG, go to AT-164, "
Diagnosis Procedure" .
Item nameCondition Display value
INPUT SPEED During driving (lock-up ON) Approximately matches the en gine speed.
Revision: May 2010 2011 Versa

AT-164
< SERVICE INFORMATION >
INPUT SPEED SENSOR A
Diagnosis Procedure
INFOID:0000000005928231
1.CHECK INPUT SIGNAL
With CONSULT-III
1. Start engine.
2. Select “TCM INPUT SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
3. Read out the value of “INPUT SPEED” while driving. Check the value changes according to driving speed.
OK or NG
OK >> GO TO 8.
NG >> GO TO 2.
2. CHECK INPUT SPEED SENSOR
With CONSULT-III
1. Start engine.
2. Check power supply to input speed sensor by voltage between TCM connector terminals. Refer to AT-
168, "Wiring Diagram - AT - MAIN" and AT-163, "Wiring Diagram - AT - PT/SEN" .
3. If OK, check the pulse when vehicle cruises.
OK or NG
OK >> GO TO 8.
NG >> GO TO 3.
3. CHECK POWER AND SENSOR GROUND
1. Turn ignition switch OFF.
2. Disconnect the input speed sensor harness connector.
3. Turn ignition switch ON.
Item name ConditionDisplay value
INPUT SPEED During driving (lock-up
ON)Approximately matches
the engine speed.
Item Connector
TerminalJudgement standard
(Approx.)
TCM E31, E32 10 - 42
Battery voltage
19 - 42
Name Condition
Input speed sensor When driving at 20 km/h (12 MPH), use the CONSULT-III
pulse frequency measuring function.*1
CAUTION:
Connect the diagnosis data link
cable to the vehicle diag-
nosis connector.
*1: A circuit tester cannot be used to test this item.
Item Connector Terminal Name Judgement
standard
(Approx.)
TCM E32 38 Input speed sensor 360 Hz
AWDIA0642GB
Revision: May 2010 2011 Versa

INPUT SPEED SENSOR AAT-165
< SERVICE INFORMATION >
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4. Check voltage between input speed sensor harness connector terminals.
5. Check voltage between input speed sensor harness connector terminal and ground.
6. If OK, check harness for short to ground and short to power.
7. Reinstall any part removed.
OK or NG
OK >> GO TO 4.
NG - 1 >> Battery voltage is not supplied between terminals 1 and 3, terminals 1 and ground: GO TO 6.
NG - 2 >> Battery voltage is not supplied between terminals 1 and 3 only: GO TO 7.
4. CHECK HARNESS BETWEEN TCM AND INPUT SPEED SENSOR
1. Turn ignition switch OFF.
2. Disconnect the input speed sensor harness connector.
3. Check continuity between TCM connector (A) terminal and input
speed sensor harness connector (B) terminal.
4. If OK, check harness for short to ground and short to power.
5. Reinstall any part removed.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
5.CHECK TCM
1. Check TCM input/output signal. Refer to AT-75, "
TCM Terminal and Reference Value" .
2. If NG, re-check TCM pin terminals for dam age or loose connection with harness connector.
OK or NG
OK >> GO TO 8.
NG >> Repair or replace damaged parts.
6. CHECK HARNESS BETWEEN TCM AND INPUT SPEED SENSOR (POWER)
1. Turn ignition switch OFF.
2. Disconnect the input speed sensor harness connector.
ItemConnector Terminal Judgement
standard
(Approx.)
Input speed sensor F471 - 3Battery volt-
age
JSDIA1509ZZ
Item Connector Terminal Judgement
standard
(Approx.)
Input speed sensor F47 1 - groundBattery volt-
age
JSDIA1510ZZ
Item Connector Terminal Continuity
TCM E3238
Ye s
Input speed sensor F472
JSDIA1511ZZ
Revision: May 2010 2011 Versa

AT-166
< SERVICE INFORMATION >
INPUT SPEED SENSOR A
3. Check continuity between TCM connector (A) terminals and
input speed sensor harness connector (B) terminal. Refer to AT-
50, "Circuit Diagram" and AT-168, "Wiring Diagram - AT - MAIN"
.
4. If OK, check harness for short to ground and short to power.
5. Reinstall any part removed.
OK or NG
OK >> 10A fuse (No.49, located in the IPDM E/R) or ignition switch are malfunctioning.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
7. CHECK HARNESS BETWEEN TCM AND INPUT SPEED SENSOR (GROUND)
1. Turn ignition switch OFF.
2. Disconnect the input speed sensor harness connector.
3. Check continuity between TCM connector (A) terminal and input speed sensor harness connector (B) terminal.
4. If OK, check harness for short to ground and short to power.
5. Reinstall any part removed.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
8.CHECK DTC
Perform AT-162, "
DTC Confirmation Procedure" .
OK or NG
OK >> INSPECTION END
NG >> GO TO 5.
Item Connector Terminal Continuity
TCM E3110
Ye s
Input speed sensor F471
TCM E3119
Ye s
Input speed sensor F471
JSDIA1512GB
Item Connector Terminal Continuity
TCM E3242
Ye s
Input speed sensor F473
JSDIA1513ZZ
Revision: May 2010 2011 Versa

CONTROL UNIT (RAM), CONTROL UNIT (ROM)AT-167
< SERVICE INFORMATION >
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CONTROL UNIT (RAM), CONTROL UNIT (ROM)
DescriptionINFOID:0000000005928232
The TCM consists of a microcomputer and connectors for signal
input and output and for power supply. The unit controls the A/T.
On Board Diagnosis LogicINFOID:0000000005928233
• This is not an OBD-II self-diagnostic item.
• Diagnostic trouble code “CONTROL UNIT (RAM)”, “CONTR OL UNIT (ROM)” with CONSULT-III is detected
when TCM memory (RAM) or (ROM) is malfunctioning.
Possible CauseINFOID:0000000005928234
TCM.
DTC Confirmation ProcedureINFOID:0000000005928235
CAUTION:
If performing this “DTC Confirmati on Procedure” again, always turn ignition switch OFF and wait at
least 10 seconds before continuing.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-III
1. Turn ignition switch ON and select “DATA MO NITOR” mode for “TRANSMISSION” with CONSULT-III.
2. Touch “START”.
3. Start engine.
4. Run engine for at least 2 seconds at idle speed.
5. If the check result is NG, go to AT-167, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000005928236
1.CHECK DTC
With CONSULT-III
1. Turn ignition switch ON and select “SELF-DIAG RESULTS” mode for “TRANSMISSION” with CONSULT-
III.
2. Touch “ERASE”.
3. Perform AT-167, "
DTC Confirmation Procedure".
Is the
“CONTROL UNIT (RAM)” or “CONTROL UNIT (ROM)” displayed again?
YES >> Replace TCM. Refer to AT-212, "Removal and Installation".
NO >> INSPECTION END
SAT574J
Revision: May 2010 2011 Versa

MAIN POWER SUPPLY AND GROUND CIRCUITAT-169
< SERVICE INFORMATION >
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Diagnosis ProcedureINFOID:0000000005928238
1.CHECK TCM POWER SOURCE
1. Turn ignition switch ON. (Do not start engine.)
2. Check voltage between TCM connector terminals and ground.
3. Turn ignition switch OFF.
4. Check voltage between TCM connector terminals and ground.
OK or NG
OK >> GO TO 3.
NG >> GO TO 2.
2.DETECT MALFUNCTIONING ITEM
Check the following items:
• Harness for short or open between ignition switch and TCM terminals 10, 19
• Harness for short or open between battery and TCM terminal 28
• 10A fuse (No.13, located in the fuse block) and 10A fuse (No.49, located in the IPDM E/R)
• Ignition switch. Refer to PG-4
.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3.CHECK TCM GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between TCM connector terminals and ground.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
4.CHECK SYMPTOM
Drive for a while to check that there is no malfunction.
OK or NG
Item Connec-
tor Terminal Judgement standard (Approx.)
Power supply E31 10
Battery voltage
19 Battery voltage
Power supply
(memory back-up) E32 28
Battery voltage
SCIA2656E
ItemConnec-
tor Terminal Judgement standard (Approx.)
Power supply E31 10
0 V
19 0 V
Power supply
(memory back-up) E32 28
Battery voltage
SCIA2657E
Item Connector TerminalContinuity
Ground E3225, 48 - Ground Yes
SCIA2671E
Revision: May 2010 2011 Versa