Nissan Almera Tino V10. Manual — part 108
AT-156
[EURO-OBD]
DTC P0734 A/T 4TH GEAR FUNCTION
Wiring Diagram — AT — 4TH
ECS00982
YAT376A
DTC P0734 A/T 4TH GEAR FUNCTION
AT-157
[EURO-OBD]
D
E
F
G
H
I
J
K
L
M
A
B
AT
Diagnostic Procedure
ECS00983
1.
CHECK SHIFT UP (D
3
TO D
4
)
During “Cruise test — Part 1” (
), does A/T shift from D
3
to D
4
at the specified speed?
Yes or No
Yes
>> GO TO 9
No
>> GO TO 2
2.
CHECK LINE PRESSURE
Perform line pressure test.
Refer to
.
OK or NG
OK
>> GO TO 3
NG
>> GO TO 6
3.
CHECK SOLENOID VALVES
1.
Remove control valve assembly.
Refer to
AT-410, "Control Valve Assembly and Accumulators"
.
2.
Refer to
AT-160, "Component Inspection"
.
OK or NG
OK
>> GO TO 4
NG
>> Replace solenoid valve assembly.
SAT988H
Engine speed rpm
Line pressure kPa (bar, kg/cm
2
, psi )
D, 2 and 1 positions
R position
Idle
500 (0.50, 5.1, 73)
778 (7.78, 7.9, 113)
Stall
1,165 (11.7, 11.9, 169)
1,813 (18.1, 18.5, 263)
MCIA0077E
AT-158
[EURO-OBD]
DTC P0734 A/T 4TH GEAR FUNCTION
4.
CHECK CONTROL VALVE
1.
Disassemble control valve assembly.
Refer to
AT-443, "Control Valve Assembly"
.
2.
Check to ensure that:
●
Valve, sleeve and plug slide along valve bore under their own
weight.
●
Valve, sleeve and plug are free from burrs, dents and scratches.
●
Control valve springs are free from damage, deformation and
fatigue.
●
Hydraulic line is free from obstacles.
OK or NG
OK
>> GO TO 5
NG
>> Repair control valve.
5.
CHECK SHIFT UP (D
3
TO D
4
)
Does A/T shift from D
3
to D
4
at the specified speed?
OK or NG
OK
>> GO TO 9
NG
>> Check control valve again. Repair or replace control valve assembly.
6.
CHECK LINE PRESSURE SOLENOID VALVE
1.
Remove control valve assembly.
Refer to
AT-410, "Control Valve Assembly and Accumulators"
.
2.
Refer to
AT-160, "Component Inspection"
.
OK or NG
OK
>> GO TO 7
NG
>> Replace solenoid valve assembly.
SAT367H
MCIA0079E
DTC P0734 A/T 4TH GEAR FUNCTION
AT-159
[EURO-OBD]
D
E
F
G
H
I
J
K
L
M
A
B
AT
7.
CHECK CONTROL VALVE
1.
Disassemble control valve assembly.
Refer to
AT-443, "Control Valve Assembly"
.
2.
Check line pressure circuit valves for sticking.
●
Pressure regulator valve
●
Pilot valve
●
Pressure modifier valve
OK or NG
OK
>> GO TO 8
NG
>> Repair control valve.
8.
CHECK SHIFT UP (D
3
TO D
4
)
Does A/T shift from D
3
to D
4
at the specified speed?
Yes or No
Yes
>> GO TO 9
No
>> Check control valve again. Repair or replace control valve assembly.
9.
CHECK DTC
Perform
AT-154, "DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION PROCEDURE"
.
OK or NG
OK
>> INSPECTION END
NG
>> Perform “Cruise test — Part 1” again and return to the start point of this test group.
SAT367H
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