Nissan Primera P11. Manual — part 18
Description
NCAT0055
The torque converter clutch solenoid valve is activated, by the TCM
in response to signals sent from the vehicle speed and throttle
position sensors. Lock-up piston operation will then be controlled.
Lock-up operation, however, is prohibited when CVT fluid tempera-
ture is too low.
When the accelerator pedal is depressed (less than 2/8) in lock-up
condition, the engine speed should not change abruptly. If there is
a big jump in engine speed, there is no lock-up.
CONSULT-II REFERENCE VALUE IN DATA MONITOR
MODE
NCAT0055S01
Remarks: Specification data are reference values.
Monitor item
Condition
Specification
Torque converter clutch solenoid valve
duty
Lock-up “OFF”
"
Lock-up “ON”
Approximately 4%
"
Approximately 94%
TCM TERMINALS AND REFERENCE VALUE
NCAT0055S02
Remarks: Specification data are reference values.
Terminal
No.
Wire color
Item
Condition
Judgement
standard
3
GY/R
Torque converter
clutch solenoid
valve
When CVT performs lock-up.
Approx. 12.0V
When CVT does not perform lock-
up.
Approx. 0V
ON BOARD DIAGNOSIS LOGIC
NCAT0055S03
Diagnostic trouble code
Malfunction is detected when ...
Check items (Possible cause)
: TCC SOLENOID/CIRC
TCM detects an improper voltage drop
when it tries to operate the solenoid
valve.
I
Harness or connectors
(The solenoid circuit is open or shorted.)
I
T/C clutch solenoid valve
: P0740
: MI Code No. 0740
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION
PROCEDURE
NCAT0055S04
NOTE:
If “DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCE-
DURE” has been previously conducted, always turn ignition
switch “OFF” and wait at least 5 seconds before conducting
the next test.
After the repair, perform the following procedure to confirm the
malfunction is eliminated.
SAT651J
DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE
Description
AT-69
With CONSULT-II
1)
Turn ignition switch “ON”.
2)
Select “DATA MONITOR” mode for “ENGINE” with CON-
SULT-II and wait at least 10 seconds.
If the check result is “NG”, go to “Diagnostic Procedure”,
AT-72.
With GST
Follow the procedure “With CONSULT-II”.
SAT654J
DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE
Description (Cont’d)
AT-70
Wiring Diagram — AT — TCV
NCAT0207
M48
GY/R
GY/R
F102
GY/R
M48
F71
AT-TCV-01
M53
5
15 16 17
19
18
6
20
4
14
3
13
2
12
7
21
8
22
9
23
W
3
21
LU
DUTY SOL
9
1
11
10
24
W
3
2
1
4 5 6 7 8 9
10 11 12 13 14 15 16 17 18
19 20 21
22 23 24
F71
GY/R
F102
5 4
9
6
2
7
3
8
1
G
10
YAT149
TCM
(TRANSMISSION
CONTROL
MODULE)
: Detectable line for DTC
: Non-detectable line for DTC
CONTROL VALVE
(TORQUE
CONVERTER
CLUTCH
SOLENOID VALVE)
DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE
Wiring Diagram — AT — TCV
AT-71
Diagnostic Procedure
NCAT0056
1
CHECK GROUND CIRCUIT
1. Turn ignition switch to “OFF” position.
2. Disconnect terminal cord assembly connector in engine compartment.
3. Check resistance between terminal 9 and ground.
Resistance:
10 - 20
Ω
OK or NG
OK
©
GO TO 2.
NG
©
Replace CVT assembly
2
CHECK POWER SOURCE CIRCUIT
1. Turn ignition switch to “OFF” position.
2. Disconnect TCM harness connector.
3. Check continuity between terminal 9 and TCM harness connector terminal 3.
Continuity should exist.
SAT683J
If OK, check harness for short to ground and short to power.
4. Reinstall any part removed.
OK or NG
OK
©
GO TO 3.
NG
©
Repair open circuit or short to ground or short to power in harness or connectors.
3
CHECK DTC
Perform Diagnostic Trouble Code (DTC) confirmation procedure, AT-69.
OK or NG
OK
©
INSPECTION END
NG
©
1. Perform TCM input/output signal inspection.
2. If NG, recheck TCM pin terminals for damage or loose connection with harness con-
nector.
DTC P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE
Diagnostic Procedure
AT-72
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