Nissan Maxima. Manual — part 1157
TM-92
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F09B]
P0845 TRANSMISSION FLUID PRESSURE SEN/SW B
2)
Check continuity between TCM vehicle side harness connector ter-
minals and ground.
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 “P0845” 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
F15
25
Not existed
26
AWDIA0136ZZ
P0868 TRANSMISSION FLUID PRESSURE
TM-93
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F09B]
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P0868 TRANSMISSION FLUID PRESSURE
Description
INFOID:0000000010113654
The secondary pressure solenoid valve regulates the secondary pressure to suit the driving condition in
response to a signal sent from the TCM.
DTC Logic
INFOID:0000000010113655
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
1. Turn ignition switch ON.
2. Select “Data Monitor” in “TRANSMISSION”.
3. Check that output voltage of CVT fluid temperature sensor is within the range below.
4. Start engine and maintain the following conditions for at least 10 consecutive seconds.
Is “P0868” detected?
YES
>> Go to
NO
>> Check intermittent incident. Refer to
GI-41, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000010113656
1.
CHECK LINE PRESSURE
Perform line pressure test. Refer to
TM-162, "Inspection and Judgment"
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace damaged parts. Refer to
TM-162, "Inspection and Judgment"
.
2.
CHECK SECONDARY PRESSURE SOLENOID VALVE
1. Turn ignition switch OFF.
2. Disconnect CVT unit connector.
3. Check secondary pressure solenoid valve. Refer to
TM-94, "Component Inspection (Secondary Pressure
.
DTC
Trouble diagnosis name
DTC is detected if...
Possible cause
P0868
Transmission Fluid Pressure
Low
Secondary fluid pressure is too low com-
pared with the commanded value while driv-
ing.
• Harness or connectors
(Solenoid circuit is open or shorted.)
• Secondary pressure solenoid valve sys-
tem
• Secondary pressure sensor
• Line pressure control system
ATF TEMP SEN
: 1.0 – 2.0 V
If it is out of range, drive the vehicle to decrease the voltage (warm up the fluid) or stop engine to increase the voltage
(cool down the fluid)
VEHICLE SPEED (accelerate slow-
ly)
: 0
→ 50 km/h (31 MPH)
ACC PEDAL OPEN
: 0.5/8 – 1.0/8
RANGE
: “D” position
TM-94
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F09B]
P0868 TRANSMISSION FLUID PRESSURE
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace damaged parts.
3.
CHECK LINE PRESSURE SOLENOID VALVE
Check line pressure solenoid valve. Refer to
TM-94, "Component Inspection (Line Pressure Solenoid Valve)"
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace damaged parts.
4.
CHECK SECONDARY PRESSURE SENSOR SYSTEM
Check secondary pressure sensor system. Refer to
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace damaged parts.
5.
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 (Line Pressure Solenoid Valve)
INFOID:0000000010113657
1.
CHECK 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 (Secondary Pressure Solenoid Valve)
INFOID:0000000010113658
1.
CHECK SECONDARY 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
.
CVT unit connector
Ground
Resistance
(Approx.)
Connector
Terminal
F15
2
3.0 – 9.0
Ω
SCIA4686E
CVT unit connector
Ground
Resistance
(Approx.)
Connector
Terminal
F15
3
3.0 – 9.0
Ω
AWDIA0123ZZ
P1701 TCM
TM-95
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F09B]
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P1701 TCM
Description
INFOID:0000000010113659
When the power supply to the TCM is cut off, for example because the battery is removed, and the self-diag-
nosis memory function stops, a malfunction is detected.
NOTE:
Since “P1701” is indicated when replacing TCM, perform diagnosis after erasing “Self Diagnostic Results”.
DTC Logic
INFOID:0000000010113660
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
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
1. Turn ignition switch ON.
2. Wait for at least 2 consecutive seconds.
3. Perform “Self Diagnostic Results” in “TRANSMISSION”.
Is “P1701” detected?
YES
>> Go to
NO
>> Check intermittent incident. Refer to
GI-41, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000010113661
Regarding Wiring Diagram information, refer to
.
1.
CHECK TCM POWER SOURCE
1. Turn ignition switch OFF.
2. Disconnect TCM connector.
3. Check voltage between TCM vehicle side harness connector
terminals.
DTC
Trouble diagnosis name
DTC is detected if...
Possible cause
P1701
Power Supply Circuit
• When the power supply to the TCM is cut
off, for example because the battery is re-
moved, and the self-diagnosis memory
function stops.
• This is not a malfunction message (When-
ever shutting off a power supply to the
TCM, this message appears on the
screen).
Harness or connectors
(Battery or ignition switch and TCM circuit is
open or shorted.)
TCM vehicle side harness connector
Condition
Voltage
(Approx.)
Connector
Terminal
AWDIA0140ZZ
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