2009 NISSAN LATIO Service Repair Manual

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Page 1233 of 4331

NISSAN LATIO 2009 Service Repair Manual DTC P0840 TRANSMISSION FLUID PR
ESSURE SENSOR A CIRCUIT (SEC
PRESSURE SENSOR)
CVT-289
< SERVICE INFORMATION >
[RE0F08B] D
E
F
G H
I
J
K L
M A
B CVT
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Diagnosis Procedure
INFOID:00000000043057161.

Page 1234 of 4331

NISSAN LATIO 2009 Service Repair Manual CVT-290< SERVICE INFORMATION >
[RE0F08B]
DTC P0840 TRANSMISSION FLUID PR
ESSURE SENSOR A CIRCUIT (SEC
PRESSURE SENSOR)
OK >> Replace TCM. Refer to CVT-190, " Service After Replacing TCM and Transax

Page 1235 of 4331

NISSAN LATIO 2009 Service Repair Manual CVT
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DTC P0841 PRESSURE SENSOR FUNCTION
Description INFOID:0000000004305717
Using the engine load (throttle position), the primary pulley revolution speed, and the secondary pulley revolu-
tion

Page 1236 of 4331

NISSAN LATIO 2009 Service Repair Manual OK >> GO TO 6.
NG >> GO TO 3. Inspections before Trouble Diagnosis " .
OK or NG OK >> GO TO 4.
NG >> Repair or replace damaged parts. Refer to CVT-219, " Inspections before Trouble Diagnosis " .
4. C

Page 1237 of 4331

NISSAN LATIO 2009 Service Repair Manual CVT
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DTC P0868 SECONDARY PRESSURE DOWN
Description INFOID:0000000004305730
• The pressure control solenoid valve B (secondary pressure solenoid valve) is included in the control

CVT
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DTC P0868 SECONDARY PRESSURE DOWN
Description INFOID:0000000004305730
• 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:0000000004305731
Remarks: Specification data are reference values.
On Board Diagnosis Logic INFOID:0000000004305732
• 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:0000000004305733
• 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:0000000004305734
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-293, " Diagnosis Procedure " .
Diagnosis Procedure INFOID:0000000004305735

Page 1238 of 4331

NISSAN LATIO 2009 Service Repair Manual OK >> GO TO 5.
NG >> GO TO 2. Inspections before Trouble Diagnosis " .
OK or NG OK >> GO TO 3.
NG >> Repair or replace damaged parts. Refer to CVT-219, " Inspections before Trouble Diagnosis " .
Comp

Page 1239 of 4331

NISSAN LATIO 2009 Service Repair Manual CVT
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DTC P1701 TRANSMISSION CONT
ROL MODULE (POWER SUPPLY)
Description INFOID:0000000004305736
When the power supply to the TCM is cut OFF, for exam ple because the battery is removed, and the se

Page 1240 of 4331

NISSAN LATIO 2009 Service Repair Manual TCM Terminal and Reference Value " . B

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