Nissan X-Trail 32. Instruction — part 2100
TM-358
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F10D]
P0847 TRANSMISSION FLUID PRESSURE SEN/SW B
P0847 TRANSMISSION FLUID PRESSURE SEN/SW B
DTC Description
INFOID:0000000010622545
DTC DETECTION LOGIC
POSSIBLE CAUSE
• Harness or connector (Secondary pressure sensor circuit is open or shorted to ground)
• Secondary pressure sensor
• Control valve assembly
FAIL-SAFE
Not changed from normal driving
DTC CONFIRMATION PROCEDURE
1.
PREPARATION BEFORE WORK
If another "DTC CONFIRMATION PROCEDURE" occurs just before, turn ignition switch OFF and wait for at
least 10 seconds, then perform the next test.
>> GO TO 2.
2.
CHECK DTC DETECTION
With CONSULT
1.
Start the engine.
2.
Select “Data Monitor” in “TRANSMISSION”.
3.
Select “FLUID TEMP”.
4.
Maintain the following conditions for 10 seconds or more.
5.
Check the first trip DTC.
With GST
1.
Start the engine and wait for at least 10 seconds.
CAUTION:
When the ambient temperature is less than
−
20
°
C (
−
4
°
F) and the engine is cold, warm up the
engine for approximately 5 minutes.
2.
Check the first trip DTC.
Is “P0847”detected?
YES
>> Go to
NO-1
>> To check malfunction symptom before repair: Refer to
GI-44, "Intermittent Incident"
.
NO-2
>> Confirmation after repair: INSPECTION END
Diagnosis Procedure
INFOID:0000000010622546
1.
CHECK TCM INPUT SIGNALS
1.
Turn ignition switch OFF.
2.
Start the engine.
3.
Check voltage between TCM harness connector terminals.
DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
P0847
FLUID PRESS SEN/SW B
(Transmission Fluid Pressure Sensor/Switch B
Circuit Low)
When all of the following conditions are satisfied and this state is main-
tained for 5 seconds:
• CVT fluid temperature: More than
−
20
°
C (
−
4
°
F)
• TCM power supply voltage: 11 V or more
• Secondary pressure sensor voltage: 0.09 V or less
FLUID TEMP
:
−
20
°
C (
−
4
°
F)
P0847 TRANSMISSION FLUID PRESSURE SEN/SW B
TM-359
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F10D]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
Is the inspection result normal?
YES >> INSPECTION
END
NO
>> GO TO 2.
2.
CHECK CIRCUIT BETWEEN TCM AND CVT UNIT (PART 1)
1.
Turn ignition switch OFF.
2.
Disconnect TCM connector and CVT unit connector.
3.
Check continuity between TCM harness connector terminals and CVT unit harness connector terminals.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace malfunctioning parts.
3.
CHECK CIRCUIT BETWEEN TCM AND CVT UNIT (PART 2)
Check continuity between TCM harness connector terminals and ground.
Is the inspection result normal?
YES
>> There is malfunction of secondary pressure sensor. Replace transaxle assembly. Refer to
450, "Removal and Installation"
NO
>> Repair or replace malfunctioning parts.
+
−
Condition
Voltage
TCM
Connector
Terminal
F23
16
Ground
• After engine warm up
• Selector lever: “N” position
• At idle
1.23 – 1.25 V
TCM
CVT unit
Continuity
Connector
Terminal
Connector
Terminal
F23
11
F24
18
Existed
16
14
26
22
TCM
—
Continuity
Connector
Terminal
F23
16
Ground
Not existed
26
TM-360
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F10D]
P0848 TRANSMISSION FLUID PRESSURE SEN/SW B
P0848 TRANSMISSION FLUID PRESSURE SEN/SW B
DTC Description
INFOID:0000000010622547
DTC DETECTION LOGIC
POSSIBLE CAUSE
• Harness or connector (Secondary pressure sensor circuit is shorted to power supply)
• Secondary pressure sensor
• Control valve assembly
FAIL-SAFE
Not changed from normal driving
DTC CONFIRMATION PROCEDURE
1.
PREPARATION BEFORE WORK
If another "DTC CONFIRMATION PROCEDURE" occurs just before, the ignition switch OFF and wait for at
least 10 seconds, then perform the next test.
>> GO TO 2.
2.
CHECK DTC DETECTION
With CONSULT
1.
Start the engine.
2.
Select “Data Monitor” in “TRANSMISSION”.
3.
Select “FLUID TEMP”.
4.
Maintain the following conditions for 10 seconds or more.
5.
Check the first trip DTC.
With GST
1.
Start the engine and wait for at least 10 seconds.
CAUTION:
When the ambient temperature is less than
−
20
°
C (
−
4
°
F) and the engine is cold, warm up the
engine for approximately 5 minutes.
2.
Check the first trip DTC.
Is “P0848”detected?
YES
>> Go to
NO-1
>> To check malfunction symptom before repair: Refer to
GI-44, "Intermittent Incident"
.
NO-2
>> Confirmation after repair: INSPECTION END
Diagnosis Procedure
INFOID:0000000010622548
1.
CHECK TCM INPUT SIGNALS
1.
Turn ignition switch OFF.
2.
Start the engine.
3.
Check voltage between TCM harness connector terminals.
DTC
CONSULT screen terms
(Trouble diagnosis content)
DTC detection condition
P0848
FLUID PRESS SEN/SW B
(Transmission Fluid Pressure Sensor/Switch B
Circuit Low)
When all of the following conditions are satisfied and this state is main-
tained for 5 seconds:
• CVT fluid temperature: More than
−
20
°
C (
−
4
°
F)
• TCM power supply voltage: More than 11 V
• Instruction secondary pressure: 5.7 MPa or less
• Secondary pressure sensor voltage: 4.7 V or more
FLUID TEMP
: More than
−
20
°
C (
−
4
°
F)
P0848 TRANSMISSION FLUID PRESSURE SEN/SW B
TM-361
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F10D]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
Is the inspection result normal?
YES >> INSPECTION
END
NO
>> GO TO 2.
2.
CHECK SECONDARY PRESSURE SENSOR POWER CIRCUIT
1.
Turn ignition switch OFF.
2.
Connect TCM connector.
3.
Disconnect CVT unit connector.
4.
Check voltage between CVT unit harness connector terminal and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace malfunctioning parts.
3.
CHECK SECONDARY PRESSURE SENSOR SIGNAL CIRCUIT
Check voltage between CVT unit harness connector terminal and ground.
Is the inspection result normal?
YES
>> There is malfunction of secondary pressure sensor. Replace transaxle assembly. Refer to
450, "Removal and Installation"
NO
>> Repair or replace malfunctioning parts.
+
−
Condition
Voltage
TCM
Connector
Terminal
F23
16
Ground
• After engine warm up
• Selector lever: “N” position
• At idle
1.23 – 1.25 V
+
−
Voltage
(Approx.)
CVT unit
Connector
Terminal
F24
22
Ground
5.0 V
+
−
Voltage
(Approx.)
CVT unit
Connector
Terminal
F24
14
Ground
0 V
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