Nissan Qashqai (2007-2010). Manual — part 578
P0746 PRESSURE CONTROL SOLENOID A PERFORMANCE (LINE PRESSURE
SOLENOID VALVE)
TM-247
< COMPONENT DIAGNOSIS >
[CVT: RE0F10A]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
Check pressure control solenoid valve A (line pressure solenoid valve). Refer to
.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace damaged parts.
3.
CHECK OUTPUT SPEED SENSOR (SECONDARY SPEED SENSOR) SYSTEM
Check output speed sensor (secondary speed sensor) system. Refer to
.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace damaged parts.
4.
CHECK INPUT SPEED SENSOR (PRIMARY SPEED SENSOR) SYSTEM
Check input speed sensor (primary speed sensor) system. Refer to
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace damaged parts.
5.
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
TM-248
< COMPONENT DIAGNOSIS >
[CVT: RE0F10A]
P0776 PRESSURE CONTROL SOLENOID B PERFORMANCE (SEC PRESSURE
SOLENOID VALVE)
P0776 PRESSURE CONTROL SOLENOID B PERFORMANCE (SEC PRES-
SURE SOLENOID VALVE)
Description
INFOID:0000000000988687
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:0000000000988688
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.
Start engine and maintain the following conditions for at least 30 consecutive seconds.
With GST
Follow the procedure “With CONSULT-III”.
Is “P0776 PRS CNT SOL/B FCTN” detected?
YES
>> Go to
NO
>> Check intermittent incident. Refer to
GI-39, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000000988689
1.
CHECK LINE PRESSURE
Perform line pressure test. Refer to
TM-318, "Inspection and Judgment"
.
Is the inspection result normal?
DTC
Item
(CONSULT-III screen term)
Malfunction is detected when...
Possible cause
P0776
PRS CNT SOL/B FCTN
Secondary pressure is too high
or too low compared with the
commanded value while driv-
ing.
• 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
ACC PEDAL OPEN
: More than 1.0/8
RANGE
: “D” position
VEHICLE SPEED
: 10 km/h (6 MPH) More than
Driving location
: Driving the vehicle uphill (in-
creased engine load) will help
maintain the driving conditions
required for this test.
P0776 PRESSURE CONTROL SOLENOID B PERFORMANCE (SEC PRESSURE
SOLENOID VALVE)
TM-249
< COMPONENT DIAGNOSIS >
[CVT: RE0F10A]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
YES
>> GO TO 2.
NO
>> Repair or replace damaged parts. Refer to
TM-318, "Inspection and Judgment"
.
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 TCM input/output signals. Refer to
.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-39, "Intermittent Incident"
.
NO
TM-250
< COMPONENT DIAGNOSIS >
[CVT: RE0F10A]
P0778 PRESSURE CONTROL SOLENOID B ELECTRICAL (SEC PRESSURE
SOLENOID VALVE)
P0778 PRESSURE CONTROL SOLENOID B ELECTRICAL (SEC PRES-
SURE SOLENOID VALVE)
Description
INFOID:0000000000988690
The pressure control solenoid valve B (secondary pressure solenoid valve) regulates the oil pump discharge
pressure to suit the driving condition in response to a signal sent from the TCM.
DTC Logic
INFOID:0000000000988691
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
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.
Start engine.
3.
Drive vehicle and maintain the following conditions for at least 5 consecutive seconds.
4.
Perform “SELF-DIAG RESULTS”. Refer to
TM-216, "CONSULT-III Function (TRANSMISSION)"
.
With GST
Follow the procedure “With CONSULT-III”.
Is “P0778 PRS CNT SOL/B CIRC” detected?
YES
>> Go to
NO
>> Check intermittent incident. Refer to
GI-39, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000000988692
1.
CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect TCM connector.
3.
Check resistance between TCM connector terminal and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 2.
2.
CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
Check pressure control solenoid valve B (secondary pressure solenoid valve). Refer to
.
DTC
Item
(CONSULT-III screen term)
Malfunction is detected when...
Possible cause
P0778
PRS CNT SOL/B CIRC
• Normal voltage not applied to
solenoid due to cut line,
short, or the like.
• TCM detects as irregular by
comparing target value with
monitor value.
• Harness or connectors
(Sensor circuit is open or
shorted.)
• Pressure control solenoid
valve B (Secondary pressure
solenoid valve)
TCM connector
Ground
Resistance (Approx.)
Connector
Terminal
F25
39
3.0 – 9.0
Ω
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