Nissan Teana J32. Manual — part 1138
TM-76
< COMPONENT DIAGNOSIS >
[CVT: RE0F09B]
P0840 TRANSMISSION FLUID PRESSURE SENSOR A (SEC PRESSURE SEN-
SOR)
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Repair or replace damaged parts.
7.
CHECK TCM
1.
Replace with the same type of TCM. Refer to
.
2.
Connect each connector.
3.
Perform “DTC CONFIRMATION PROCEDURE”. Refer to
.
Is “P0840 TR PRS SENS/A CIRC” detected?
YES
>> Replace transaxle assembly. Refer to
NO
8.
DETECT MALFUNCTIONING ITEMS
Check TCM connector pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES
NO
>> Repair or replace damaged parts.
TCM vehicle side harness connector
Ground
Continuity
Connector
Terminal
F23
25
Not existed
26
P0841 PRESSURE SENSOR FUNCTION
TM-77
< COMPONENT DIAGNOSIS >
[CVT: RE0F09B]
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P0841 PRESSURE SENSOR FUNCTION
Description
INFOID:0000000003849005
Using the engine load (throttle position), the primary pulley revolution speed, and the secondary pulley revolu-
tion speed as input signals, TCM changes the operating pressure of the primary pulley and the secondary pul-
ley and changes the groove width of the pulley to control the gear ratio.
DTC Logic
INFOID:0000000003849006
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
Immediately after performing any “DTC CONFIRMATION PROCEDURE”, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.
1.
CHECK DTC DETECTION
With CONSULT-III
1.
Turn ignition switch ON.
2.
Select “Data Monitor” mode for “TRANSMISSION”.
3.
Start engine and maintain the following conditions for at least 12 consecutive seconds.
Is “P0841 PRESS SEN/FNCTN” detected?
YES
>> Go to
NO
>> Check intermittent incident. Refer to
GI-35, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000003849007
1.
CHECK LINE PRESSURE
Perform line pressure test. Refer to
TM-146, "Inspection and Judgment"
.
Is the inspection result normal?
YES
>> .GO TO 2.
NO
>> Repair or replace damaged parts. Refer to
TM-146, "Inspection and Judgment"
.
2.
CHECK TRANSMISSION FLUID PRESSURE SENSOR A (SECONDARY PRESSURE SENSOR) SYS-
TEM
Check transmission fluid pressure sensor A (secondary pressure sensor) system. Refer to
.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace damaged parts.
3.
CHECK TRANSMISSION FLUID PRESSURE SENSOR B (PRIMARY PRESSURE SENSOR) SYSTEM
Check transmission fluid pressure sensor B (primary pressure sensor) system. Refer to
DTC
Item
(CONSULT-III screen term)
Malfunction is detected when...
Possible cause
P0841
PRESS SEN/FNCTN
Correlation between the values of the trans-
mission fluid pressure sensor A (secondary
pressure sensor) and the transmission fluid
pressure sensor B (primary pressure sen-
sor) is out of specification.
• Harness or connectors
(Sensor circuit is open or shorted.)
• Transmission fluid pressure sensor A
(secondary pressure sensor)
• Transmission fluid pressure sensor B (pri-
mary pressure sensor)
VEHICLE SPEED
: 40 km/h (25 MPH) or more
RANGE
: “D” position
TM-78
< COMPONENT DIAGNOSIS >
[CVT: RE0F09B]
P0841 PRESSURE SENSOR FUNCTION
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace damaged parts.
4.
CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
1.
Turn ignition switch OFF.
2.
Disconnect CVT unit connector.
3.
Check pressure control solenoid valve A (line pressure solenoid valve). Refer to
Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid Valve)]"
.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace damaged parts.
5.
CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
Check pressure control solenoid valve B (secondary pressure solenoid valve). Refer to
Inspection [Pressure Control Solenoid Valve B (Secondary Pressure Solenoid Valve)]"
.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace damaged parts.
6.
CHECK STEP MOTOR SYSTEM
Check step motor system. Refer to
.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Repair or replace damaged parts.
7.
DETECT MALFUNCTIONING ITEMS
Check TCM connector pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES
NO
>> Repair or replace damaged parts.
Component Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid
Valve)]
INFOID:0000000003849008
1.
CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
Check resistance between CVT unit connector terminal and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace transaxle assembly. Refer to
Component Inspection [Pressure Control Solenoid Valve B (Secondary Pressure So-
lenoid Valve)]
INFOID:0000000003849009
1.
CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
Check resistance between CVT unit connector terminal and ground.
CVT unit connector
Ground
Resistance (Approx.)
Connector
Terminal
F24
2
3.0 – 9.0
Ω
CVT unit connector
Ground
Resistance (Approx.)
Connector
Terminal
F24
3
3.0 – 9.0
Ω
P0841 PRESSURE SENSOR FUNCTION
TM-79
< COMPONENT DIAGNOSIS >
[CVT: RE0F09B]
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Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace transaxle assembly. Refer to
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