Nissan Qashqai (2007-2010). Manual — part 582
P0868 SECONDARY PRESSURE DOWN
TM-263
< COMPONENT DIAGNOSIS >
[CVT: RE0F10A]
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TM
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P0868 SECONDARY PRESSURE DOWN
Description
INFOID:0000000000988707
The pressure control solenoid valve B (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:0000000000988708
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC CONFIRMATION PROCEDURE” has been previously performed, always 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.
1.
CHECK DTC DETECTION
With CONSULT-III
1.
Turn ignition switch ON.
2.
Select “DATA MONITOR”.
3.
Make sure 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 SEC/PRESS DOWN” detected?
YES
>> Go to
NO
>> Check intermittent incident. Refer to
GI-39, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000000988709
1.
CHECK LINE PRESSURE
Perform line pressure test. Refer to
TM-318, "Inspection and Judgment"
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace damaged parts. Refer to
TM-318, "Inspection and Judgment"
.
DTC
Item
(CONSULT-III screen term)
Malfunction is detected when...
Possible cause
P0868
SEC/PRESS DOWN
Secondary fluid pressure is too
low compared with the com-
manded value while driving.
• 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 pres-
sure sensor)
• Line pressure control system
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 (cool down the fluid)
VEHICLE SPEED (accelerate
slowly)
: 0
→
50 km/h (31 MPH)
ACC PEDAL OPEN
: 0.5/8 – 1.0/8
RANGE
: “D” position
TM-264
< COMPONENT DIAGNOSIS >
[CVT: RE0F10A]
P0868 SECONDARY PRESSURE DOWN
2.
CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
Check pressure control solenoid valve B (secondary pressure solenoid valve). Refer to
.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace damaged parts.
3.
CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
Check pressure control solenoid valve A (line pressure solenoid valve). Refer to
.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace damaged parts.
4.
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 5.
NO
>> Repair or replace damaged parts.
5.
CHECK TCM
Check input/output signal. Refer to
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-39, "Intermittent Incident"
.
NO
P1701 TRANSMISSION CONTROL MODULE (POWER SUPPLY)
TM-265
< COMPONENT DIAGNOSIS >
[CVT: RE0F10A]
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P1701 TRANSMISSION CONTROL MODULE (POWER SUPPLY)
Description
INFOID:0000000000988710
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, malfunction is detected.
NOTE:
Since “P1701 TCM-POWER SUPPLY” will be indicated when replacing TCM, perform diagnosis after
erasing “SELF-DIAG RESULTS”
DTC Logic
INFOID:0000000000988711
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
NOTE:
If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch
OFF and wait at least 10 seconds before conducting the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
1.
CHECK DTC DETECTION
With CONSULT-III
1.
Turn ignition switch ON.
2.
Wait for at least 2 consecutive seconds.
3.
Perform “SELF-DIAG RESULTS”. Refer to
TM-216, "CONSULT-III Function (TRANSMISSION)"
.
Is “P1701 TCM-POWER SUPPLY” detected?
YES
>> Go to
NO
>> Check intermittent incident. Refer to
GI-39, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000000988712
1.
CHECK TCM POWER SOURCE
Check voltage between TCM connector terminals and ground.
Is the inspection result normal?
YES
>> GO TO 4.
DTC
Item
(CONSULT-III screen term)
Malfunction is detected when...
Possible cause
P1701
TCM-POWER SUPPLY
• When the power supply to the
TCM is cut OFF, for example
because the battery is re-
moved, and the self-diagno-
sis memory function stops.
• This is not a malfunction
message (Whenever 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 short-
ed.)
Name
TCM connector
Ground
Condition
Voltage (Approx.)
Connector
Terminal
Power supply
F25
46
Ignition switch ON
Battery voltage
Ignition switch OFF
0 V
48
Ignition switch ON
Battery voltage
Ignition switch OFF
0 V
Power supply (mem-
ory back-up)
45
Always
Battery voltage
47
TM-266
< COMPONENT DIAGNOSIS >
[CVT: RE0F10A]
P1701 TRANSMISSION CONTROL MODULE (POWER SUPPLY)
NO
>> GO TO 2.
2.
DETECT MALFUNCTIONING ITEM
Check the following.
• Harness for short or open between battery and TCM connector terminal 45, 47
• Harness for short or open between ignition switch and TCM connector terminal 46, 48
• 10 A fuse (No. 55, located in the IPDM E/R)
• 15 A fuse (No. 13, located in the J/B)
• Ignition switch. Refer to
.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace damaged parts.
3.
CHECK TCM GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect TCM connector.
3.
Check continuity between TCM connector terminals and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair open circuit or short to ground or short to power in harness or connectors.
4.
CHECK TCM
Check TCM input/output signals. Refer to
.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-39, "Intermittent Incident"
.
NO
TCM connector
Ground
Continuity
Connector
Terminal
F25
5
Existed
42
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