2009 NISSAN LATIO ignition

CVT
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O P
DTC P0845 TRANSMISSION FLUID PR
ESSURE SENSOR B CIRCUIT (PRI
PRESSURE SENSOR)
Description INFOID:0000000004667015
• The transmission fluid pressure sensor B (primary pre ssure sensor) is included in the control valve assem-
bly.
• The transmission fluid pressure sensor B (primary pr essure sensor) detects primary pressure of CVT and
sends TCM the signal.
CONSULT-III Reference Val ue in Data Monitor Mode INFOID:0000000004667016
Remarks: Specification data are reference values.
On Board Diagnosis Logic INFOID:0000000004667017
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0845 TR PRS SENS/B CIRC” wi th CONSULT-III is detected under the following
conditions.
- When TCM detects an improper voltage drop when it receives the sensor signal.
- When TCM compares target value with monitor value and detects an irregularity.
Possible Cause INFOID:0000000004667018
• Transmission fluid pressure sensor B (Primary pressure sensor)
• Harness or connectors (Sensor circuit is open or shorted.)
DTC Confirmation Procedure INFOID:0000000004667019
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, 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. Make sure that output voltage of line te mperature sensor is within the range below.
ATF TEMP SEN: 1.0 - 2.0 V
If out of range, drive the vehicle to decrease the voltage (warm up the fluid) or stop engine to
increase the voltage (c ool down the fluid)
3. Start engine and wait for at least 5 consecutive seconds.
4. If DTC is detected, go to CVT-121, " Diagnosis Procedure " .
WITH GST
Follow the procedure “WITH CONSULT-III”. Item name Condition Display value (Approx.)
PRI HYDR SEN “N” position idle 0.7 V

DTC P0845 TRANSMISSION FLUID PRES
SURE SENSOR B CIRCUIT (PRI
PRESSURE SENSOR)
CVT-121
< SERVICE INFORMATION >
[RE0F08A] D
E
F
G H
I
J
K L
M A
B CVT
N
O P
Diagnosis Procedure
INFOID:00000000046670211.
CHECK INPUT SIGNAL
With CONSULT-III
1. Start engine.
2. Select “ECU INPUT SIGNALS” in “DATA MONITO R” mode for “TRANSMISSION” with CONSULT-III.
3. Start vehicle and read out the value of “PRI HYDR SEN”.
Without CONSULT-III
1. Start engine.
2. Check voltage between TCM connector terminal and ground.
OK or NG OK >> GO TO 5.
NG >> GO TO 2. 2.
CHECK SENSOR POWER AND SENSOR GROUND
1. Turn ignition switch ON. (Do not start engine)
2. Check voltage between TCM connector terminals.
OK or NG OK >> GO TO 4.
NG >> GO TO 3.
3. CHECK HARNESS BETWEEN TCM AND CVT UNI T HARNESS CONNECTOR (SENSOR POWER ANDSENSOR GROUND)
1. Turn ignition switch OFF.
2. Disconnect TCM connector and CVT unit harness connector.
3. Check continuity between TCM connector terminals and CVT
unit harness connector terminals.
4. If OK, check harness for short to ground and short to power.
5. Reinstall any part removed. Item name Condition Display value (Approx.)
PRI HYDR SEN “N” position idle 0.7 V Name Connector Terminal Condition
Voltage
(Approx.)
Transmis-
sion fluid
pressure
sensor B
(Primary
pressure
sensor) E32 41 - Ground “N” position idle 0.7 V SCIA4509E
Item Connector Terminal
Data (Ap-
prox.)
TCM connector E32 46 - 42 5.0 V SCIA2367E
Item Connector Terminal Continuity
TCM E32 42 Yes
CVT unit harness connector F46 19
TCM E32 46 Yes
CVT unit harness connector F46 20 SCIA4681E

CVT
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DTC P0868 SECONDARY PRESSURE DOWN
Description INFOID:0000000004667022
• The pressure control solenoid valve B (secondary pressure solenoid valve) is included in the control valve assembly.
• The pressure control solenoid valve B (secondary pressure solenoid valve) regulates the secondary pres-
sure to suit the driving condition in response to a signal sent from the TCM.
CONSULT-III Reference Val ue in Data Monitor Mode INFOID:0000000004667023
Remarks: Specification data are reference values.
On Board Diagnosis Logic INFOID:0000000004667024
• This is not an OBD-II self-diagnostic item.
• Diagnostic trouble code “P0868 SEC/PRESS DOWN” with CONSULT-III is detected when secondary fluid
pressure is too low compared with the commanded value while driving.
Possible Cause INFOID:0000000004667025
• Harness or connectors (Solenoid circuit is open or shorted.)
• Pressure control solenoid valve B (Secondary pressure solenoid valve) system
• Transmission fluid pressure sensor A (Secondary pressure sensor)
• Line pressure control system
DTC Confirmation Procedure INFOID:0000000004667026
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, 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. Make sure that output voltage of CVT fluid temperature sensor is within the range below.
ATF TEMP SEN: 1.0 - 2.0 V
If out of range, drive the vehicle to decrease the voltage (warm up the fluid) or stop engine to
increase the voltage (c ool down the fluid)
3. Start engine and maintain the following conditions for at least 10 consecutive seconds. VEHICLE SPEED (accelerate slowly): 0 → 50 km/h (31 MPH)
ACC PEDAL OPEN: 0.5/8 - 1.0/8
RANGE: “D” position
4. If DTC is detected, go to CVT-123, " Diagnosis Procedure " .
Diagnosis Procedure INFOID:0000000004667027

CVT
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DTC P1701 TRANSMISSION CONT
ROL MODULE (POWER SUPPLY)
Description INFOID:0000000004667028
When the power supply to the TCM is cut OFF, for exam ple because the battery is removed, and the self-diag-
nosis memory function stop s, malfunction is detected.
NOTE:
Since “P1701 TCM-POWER SUPPLY” will be indicated when replacing TCM, perform diagnosis after
erasing “SELF-DIAG RESULTS”
On Board Diagnosis Logic INFOID:0000000004667029
• This is not an OBD-II self-diagnostic item.
• Diagnostic trouble code “P1701 TCM-POWER SUPPLY” with CONSULT-III is detected when TCM does not
receive the voltage signal from the battery power supply.
• This is not a malfunction message. (Whenever shutti ng OFF a power supply to the TCM, this message
appears on the screen.)
Possible Cause INFOID:0000000004667030
Harness or connectors
(Battery or ignition switch and TCM circuit is open or shorted.)
DTC Confirmation Procedure INFOID:0000000004667031
NOTE:
If “DTC Confirmation Procedure” has been previously conducted, alw ays turn ignition switch OFF and
wait at least 10 seconds before conducting the next test.
After the repair, perform the following procedure to confirm 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. Wait for at least 2 consecutive seconds.
4. If DTC is detected, go to CVT-127, " Diagnosis Procedure " .

CVT
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Diagnosis Procedure
INFOID:0000000004667033OBD-II Diagnostic Trouble Code (DTC) " .
4. Turn ignition switch OFF, and wait for 5 seconds or more.
5. Start engine.
6. Confirm self-diagnostic results again. Refer to CVT-51, " CONSULT-III Function (TRANSMISSION) " .
Is the “ P1701 TCM-POWER SUPPLY ” displayed?
YES >> GO TO 2.
NO >> INSPECTION END OK >> GO TO 3.
NG >> GO TO 4. OK >> GO TO 5.
NG >> GO TO 4.

CVT-128< SERVICE INFORMATION >
[RE0F08A]
DTC P1701 TRANSMISSION CONT
ROL MODULE (POWER SUPPLY)
• 10 A fuse (No.49, located in the IPDM E/R)
• 20 A fuse (No.53, located in the IPDM E/R)
• Ignition switch. Refer to PG-3 .
OK or NG OK >> GO TO 5.
NG >> Repair or replace damaged parts. 5.
CHECK TCM GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect TCM connector.
3. Check continuity between TCM connector terminals and ground.
OK or NG OK >> GO TO 6.
NG >> Repair open circuit or short to ground or short to power in harness or connectors. 6.
CHECK DTC
Perform CVT-125, " DTC Confirmation Procedure " .
OK or NG OK >>
INSPECTION END
NG >> GO TO 7. 7.
CHECK TCM
1. Check TCM input/output signals. Refer to CVT-49, " TCM Terminal and Reference Value " .
2. If NG, re-check TCM pin terminals for damage or loose connection with harness connector.
OK or NG OK >>
INSPECTION END
NG >> Repair or replace damaged parts. Name Connector Terminal Continuity
Ground E32 25
Yes
48 SCIA2671E

CVT
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DTC P1705 THROTTLE POSITION SENSOR
Description INFOID:0000000004667034
Electric throttle control actuator consists of throttle control motor, accelerator pedal position sensor, throttle
position sensor etc. The actuator sends a signal to the ECM, and ECM sends the signal to TCM with CAN
communication.
CONSULT-III Reference Val ue in Data Monitor Mode INFOID:0000000004667035
Remarks: Specification data are reference values.
On Board Diagnosis Logic INFOID:0000000004667036
• This is not an OBD-II self-diagnostic item.
• Diagnostic trouble code “P1705 TP SEN/CIRC A/T” with CONSULT-III is detected when TCM does not
receive the proper accelerator pedal position si gnals (input by CAN communication) from ECM.
Possible Cause INFOID:0000000004667037
• ECM
• Harness or connectors
(CAN communication line is open or shorted.)
DTC Confirmation Procedure INFOID:0000000004667038
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, perform the following procedure to confirm 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. Depress accelerator pedal fully and release it, then wait for 5 seconds.
4. If DTC is detected, go to CVT-129, " Diagnosis Procedure " .
Diagnosis Procedure INFOID:0000000004667039CONSULT-III Functi
on (TRANSMISSION) " .
Is any malfunction of the “ U1000 CAN COMM CIRCUIT ” indicated?
YES >> Check the CAN communication line. Refer to
CVT-60 .
NO >> GO TO 2. Item name Condition Display value (Approx.)
ACC PEDAL OPEN Release accelerator ped-
al.↓
Fully depressed acceler- ator pedal 0.0/8
↓
8.0/8

CVT
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DTC P1722 ESTM VEHICLE SPEED SIGNAL
Description INFOID:0000000004667040
The vehicle speed signal is transmitt ed from ABS actuator and electric unit (control unit) to TCM by CAN com-
munication line.
CONSULT-III Reference Val ue in Data Monitor Mode INFOID:0000000004667041
Remarks: Specification data are reference values.
On Board Diagnosis Logic INFOID:0000000004667042
• This is not an OBD-II self-diagnostic item.
• Diagnostic trouble code “P1722 ESTM VEH SPD SIG” with CONSULT-III is detected when TCM does not
receive the proper vehicle speed signal (input by CAN communication) from ABS actuator and electric unit
(control unit).
Possible Cause INFOID:0000000004667043
• Harness or connectors (Sensor circuit is open or shorted.)
• ABS actuator and electric unit (control unit)
DTC Confirmation Procedure INFOID:0000000004667044
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 RESU LTS” 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 maintain the following conditions for at least 5 consecutive seconds.
ACC PEDAL OPEN: 1.0/8 or less
VEHICLE SPEED SE: 30 km/h (17 MPH) or more
4. If DTC is detected, go to CVT-131, " Diagnosis Procedure " .
Diagnosis Procedure INFOID:0000000004667045CONSULT-III Functi
on (TRANSMISSION) " .
Is any malfunction of the “ U1000 CAN COMM CIRCUIT ” indicated?
YES >> Check CAN communication line. Refer to
CVT-60 .
NO >> GO TO 2. CONSULT-III
Function (ABS) " .
OK or NG OK >> GO TO 3.
NG >> Repair or replace damaged parts.
Item name Condition Display value
ESTM VSP SIG During driving Approximately matches the speedometer reading.
VEHICLE SPEED