Nissan Versa Sedan. Manual — part 868
TM-378
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F11A]
P0848 TRANSMISSION FLUID PRESSURE SEN/SW B
P0848 TRANSMISSION FLUID PRESSURE SEN/SW B
DTC Logic
INFOID:0000000009268183
DTC DETECTION LOGIC
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
−20°C (−4°F) or less 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
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009268184
1.
CHECK SECONDARY PRESSURE SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect CVT unit connector.
3. Turn ignition switch ON.
4. Check voltage between CVT unit harness connector terminal and ground.
Is the inspection result normal?
YES
>> GO TO 2.
DTC
Trouble diagnosis name
DTC detection condition
Possible causes
P0848
Transmission Fluid Pressure
Sensor/Switch B Circuit Low
The secondary pressure sensor voltage is 4.7
V or more continuously for 5 seconds or more
under the following diagnosis conditions:
• Diagnosis conditions
- CVT fluid temperature:
−20°C (−4°F) or
more
- Secondary pressure target value: 5.7 MPa
or less
- TCM power supply voltage: More than 11 V
• Harness or connector
(Secondary pressure sensor circuit is
shorted to power supply)
• Secondary pressure sensor
• Control valve assembly
FLUID TEMP
:
−19°C (−2.2°F) or more
CVT unit
Ground
Voltage
Connector
Terminal
F46
16
Ground
Approx. 5.0 V
P0848 TRANSMISSION FLUID PRESSURE SEN/SW B
TM-379
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F11A]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
NO
>> Repair or replace malfunctioning parts.
2.
CHECK SECONDARY PRESSURE SENSOR SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect TCM connector.
3. Check continuity between TCM harness connector terminals.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace malfunctioning parts.
3.
CHECK TCM INPUT SIGNALS
1. Connect all connectors removed.
2. Start the engine.
3. Check voltage between TCM harness connector terminal and ground.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-45, "Intermittent Incident"
.
NO
>> There is a malfunction of secondary pressure sensor. Replace transaxle assembly. Refer to
452, "Removal and Installation"
TCM
Continuity
Connector
Terminal
F46
16
Other than 16
Not existed
TCM
Ground
Condition
Voltage
Connector
Terminal
F46
16
Ground
• Selector lever: “N” position
• At idle
Approx. 0.88 – 0.92 V
TM-380
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F11A]
P0863 TCM COMMUNICATION
P0863 TCM COMMUNICATION
DTC Logic
INFOID:0000000009268185
DTC DETECTION LOGIC
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. Turn ignition switch ON.
2. Check the DTC.
Is “P0863” detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009268186
1.
CHECK INTERMITTENT INCIDNT
GI-45, "Intermittent Incident"
Is the inspection result normal?
YES
>> Replace TCM. Refer to
TM-437, "Removal and Installation"
.
NO
>> Repair or replace malfunctioning parts.
DTC
Trouble diagnosis name
DTC detection condition
Possible causes
P0863
TCM Communication Circuit
An error is detected at the initial CAN diagno-
sis of TCM.
TCM
P0890 TCM
TM-381
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F11A]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
P0890 TCM
DTC Logic
INFOID:0000000009268187
DTC DETECTION LOGIC
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
1. Start the engine and wait for 5 seconds or more.
2. Check the DTC.
Is “P0890” detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009268188
1.
CHECK TCM POWER SUPPLY (BACK-UP) CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect TCM connector.
3. Check voltage between TCM harness connector terminals and ground.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-45, "Intermittent Incident"
.
NO
>> GO TO 2.
2.
DETECT MALFUNCTIONING ITEMS
Check the following items:
• Open or short circuit of harness between battery positive terminal and TCM connectors terminals 45 and 46.
• 10A fuse (No.25, fuse and fusible link block). Refer to
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-45, "Intermittent Incident"
.
NO
>> Repair or replace malfunctioning parts.
DTC
Trouble diagnosis name
DTC detection condition
Possible causes
P0890
Transmission control module
power relay sense circuit low
The battery voltage supplied to the TCM is
less than 8.4 V continuously for 200 msec or
more under the following diagnosis condition:
• Diagnosis condition
- TCM power supply voltage: More than 11 V
Harness or connector
(TCM power supply (back-up) circuit is
open or shorted.)
TCM
Ground
Voltage
Connector
Terminal
F44
45
Ground
10 – 16 V
46
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