Nissan Tiida C11. Manual — part 1255
DTC P0734 A/T 4TH GEAR FUNCTION
TM-71
< COMPONENT DIAGNOSIS >
[TYPE 1 (4AT: RE4F03B)]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
-
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 6.
NG
>> Repair control valve.
6.
CHECK SHIFT-UP (D
3
TO D
4
)
During
TM-183, "Cruise Test - Part 1"
.
Does A/T shift from D
3
to D
4
at the specified speed?
YES
>> GO TO 11.
NO
>> Check control valve again. Repair or replace control
valve assembly.
7.
CHECK VALVE RESISTANCE
1.
Remove control valve assembly. Refer to
TM-191, "Control Valve Assembly and Accumulators"
-
Line pressure solenoid valves
2.
Check resistance between terminal cord assembly harness con-
nector terminal and ground.
OK or NG
OK
>> GO TO 8.
NG
>> Replace solenoid valve assembly.
8.
CHECK VALVE OPERATION
1.
Remove control valve assembly. Refer to
TM-191, "Control Valve Assembly and Accumulators"
-
Line pressure solenoid valves
2.
Check solenoid valve by listening for its operating sound while
applying battery voltage to the terminal and ground.
OK or NG
OK
>> GO TO 9.
NG
>> Replace solenoid valve assembly.
9.
CHECK CONTROL VALVE
1.
Disassemble control valve assembly. Refer to
TM-243, "Control Valve Assembly"
.
2.
Check line pressure circuit valves for sticking.
-
Pilot valve
-
Shift solenoid valve A
-
Shift solenoid valve B
OK or NG
OK
>> GO TO 10.
SCIA7190E
Solenoid valve
Terminal
Resistance
(Approx.)
Line pressure solenoid valve
4
Ground
2.5 - 5
Ω
SCIA3457E
SCIA3275E
TM-72
< COMPONENT DIAGNOSIS >
[TYPE 1 (4AT: RE4F03B)]
DTC P0734 A/T 4TH GEAR FUNCTION
NG
>> Repair control valve.
10.
CHECK SHIFT-UP (D
3
TO D
4
)
During
TM-183, "Cruise Test - Part 1"
.
Does A/T shift from D
3
to D
4
at the specified speed?
YES
>> GO TO 11.
NO
>> Check control valve again. Repair or replace control
valve assembly.
11.
CHECK DTC
Perform
TM-68, "DTC Confirmation Procedure"
.
OK or NG
OK
>> INSPECTION END
NG
>> Perform
TM-183, "Cruise Test - Part 1"
again and return to the start point of this test group.
SCIA7190E
DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE
TM-73
< COMPONENT DIAGNOSIS >
[TYPE 1 (4AT: RE4F03B)]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE
Description
INFOID:0000000001694334
• The torque converter clutch solenoid valve is activated, with the gear in D
4
and D
3
, by the TCM in response
to signals sent from the vehicle speed sensor and the ECM (throttle opening). Lock-up piston operation will
then be controlled.
• Lock-up operation, however, is prohibited when A/T fluid temperature is too low.
• When the accelerator pedal is depressed (less than 2/8) on lock-up condition, the engine speed should not
change abruptly. If there is an abrupt change in engine speed, there is no lock-up.
CONSULT-III Reference Value in Data Monitor Mode
INFOID:0000000001694335
Remarks: Specification data are reference values.
On Board Diagnosis Logic
INFOID:0000000001694336
• This is an OBD self-diagnostic item.
• Diagnostic trouble code “P0740 T/C CLUTCH SOL/V” with CONSULT-III or 7th judgement flicker without
CONSULT-III is detected when TCM detects an improper voltage drop while it tries to operate solenoid
valve.
Possible Cause
INFOID:0000000001694337
• Torque converter clutch solenoid valve
• Harness or connector
(The solenoid circuit is open or shorted.)
DTC Confirmation Procedure
INFOID:0000000001694338
CAUTION:
• Always drive vehicle at a safe speed.
• If performing this “DTC Confirmation Procedure” again, always turn ignition switch OFF and wait at
least 10 seconds before continuing.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-III
1.
Turn ignition switch ON. (Do not start engine.)
2.
Select “DATA MONITOR” mode for “A/T” with CONSULT-III and wait at least 1 second.
3.
Touch “START”.
4.
Start engine and maintain the following conditions for at least 5 consecutive seconds.
VEHICLE SPEED: 80 km/h (50 MPH) or more
THROTTLE POSI: 0.5/8 - 1.0/8
SLCT LVR POSI: “D” position
Driving location: Driving the vehicle uphill (increased engine load) will help maintain the driving
conditions required for this test.
5.
If the check result is NG, go to
WITH GST
Follow the procedure “WITH CONSULT-III”.
WITHOUT CONSULT-III
1.
Start engine.
2.
Drive vehicle in D
1
→
D
2
→
D
3
→
D
4
→
D
4
lock-up position.
3.
Perform self-diagnosis. Refer to
TM-38, "Diagnosis Procedure without CONSULT-III"
4.
If the check result is NG, go to
Diagnosis Procedure
INFOID:0000000001694340
1.
CHECK INPUT SIGNAL
Item name
Condition
Display value (Approx)
TCC S/V DUTY
Lock-up OFF
⇔
Lock-up ON
4%
⇔
94%
TM-74
< COMPONENT DIAGNOSIS >
[TYPE 1 (4AT: RE4F03B)]
DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE
With CONSULT-III
1.
Start engine.
2.
Select “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-III.
3.
Read out the value of “TCC S/V DUTY” while driving. Check the value changes according to driving
speed.
Without CONSULT-III
1.
Start engine.
2.
Check voltage between TCM connector terminal and ground.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 2.
2.
CHECK TORQUE CONVERTER CLUTCH SOLENOID VALVE CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect TCM connector.
3.
Check resistance between TCM connector terminal and ground.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 3.
3.
CHECK HARNESS BETWEEN TCM AND TERMINAL CORD ASSEMBLY HARNESS CONNECTOR
1.
Turn ignition switch OFF.
2.
Disconnect terminal cord assembly harness connector and TCM connector.
3.
Check continuity between terminal cord assembly harness con-
nector terminal and TCM connector terminal.
4.
If OK, check harness for short to ground and short to power.
5.
If OK, check continuity between ground and transaxle assembly.
6.
Reinstall any part removed.
OK or NG
OK
>> GO TO 4.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
Monitor item
Condition
Display value
(Approx)
TCC S/V DUTY
Lock-up OFF
⇔
Lock-up ON
4%
⇔
94%
Name
Connec-
tor
Terminal
Condition
Judgement
standard
(Approx.)
Torque con-
verter clutch
solenoid
valve
E31
3 - Ground
When A/T performs lock-
up.
8 - 15V
When A/T does not per-
form lock-up.
0V
SCIA3261E
Solenoid Valve
Connector
Terminal
Resistance (Ap-
prox.)
Torque converter clutch
solenoid valve
E31
3 - Ground
5 - 20
Ω
SCIA3262E
Item
Connector
Terminal Continuity
TCM
E31
3
Yes
Terminal cord assembly
harness connector
F30
5
SCIA3263E
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