Infiniti I30 (A33). Manual — part 42
14
CHECK CONTROL VALVE
1. Disassemble control valve assembly. Refer to AT-312.
2. Check control valves for sticking.
I
Torque converter clutch control valve
I
Torque converter clutch relief valve
SAT367H
OK or NG
OK
©
GO TO 15.
NG
©
Repair control valve.
15
CHECK LOCK-UP
Does A/T perform lock-up at the specified speed?
Yes or No
Yes
©
GO TO 16.
No
©
Check control valve again. Repair or replace control valve assembly.
16
CHECK DTC
Perform Diagnostic Trouble Code (DTC) confirmation procedure, AT-157.
OK or NG
OK
©
INSPECTION END
NG
©
Perform “Cruise test — Part 1” again and return to the start point of this test group.
GI
MA
EM
LC
EC
FE
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0744 A/T TCC S/V FUNCTION (LOCK-UP)
Diagnostic Procedure (Cont’d)
AT-165
SAT283HB
Description
NHAT0064
The line pressure solenoid valve regulates the oil pump discharge
pressure to suit the driving condition in response to a signal sent
from the TCM.
The line pressure duty cycle value is not consistent when the
closed throttle position switch is ON. To confirm the line pres-
sure duty cycle at low pressure, the accelerator (throttle)
should be open until the closed throttle position switch is OFF.
CONSULT-II REFERENCE VALUE IN DATA MONITOR
MODE
NHAT0064S01
Remarks: Specification data are reference values.
Monitor item
Condition
Specification
Line pressure solenoid
valve duty
Small throttle opening
(Low line pressure)
"
Large throttle opening
(High line pressure)
Approximately 24%
"
Approximately 95%
NOTE:
The line pressure duty cycle value is not consistent when the closed throttle position switch is ON. To confirm the line pressure duty
cycle at low pressure, the accelerator (throttle) should be open until the closed throttle position switch is OFF.
TCM TERMINALS AND REFERENCE VALUE
NHAT0064S02
Remarks: Specification data are reference values.
Terminal
No.
Wire color
Item
Condition
Judgement
standard
(Approx.)
1
G/R
Line pressure sole-
noid valve
When releasing accelerator pedal after warm-
ing up engine.
1.5 - 3.0V
When depressing accelerator pedal fully after
warming up engine.
0V
2
W/B
Line pressure sole-
noid valve
(with dropping
resistor)
When releasing accelerator pedal after warm-
ing up engine.
4 - 14V
When depressing accelerator pedal fully after
warming up engine.
0V
On Board Diagnosis Logic
NHAT0231
Diagnostic trouble code L/PRESS SOL/CIRC with CONSULT-II or
P0745 without CONSULT-II is detected when TCM detects an
improper voltage drop when it tries to operate the solenoid valve.
DTC P0745 LINE PRESSURE SOLENOID VALVE
Description
AT-166
Possible Cause
NHAT0232
Check the following items.
I
Harness or connectors
(The solenoid circuit is open or shorted.)
I
Line pressure solenoid valve
SAT014K
SEF949Y
Diagnostic Trouble Code (DTC) Confirmation
Procedure
NHAT0233
NOTE:
If “DTC Confirmation Procedure” 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.
WITH CONSULT-II
NHAT0233S01
1)
Turn ignition switch ON and select “DATA MONITOR” mode for
“ENGINE” with CONSULT-II.
2)
Depress accelerator pedal completely and wait at least 1 sec-
ond.
WITH GST
NHAT0233S02
Follow the procedure “With CONSULT-II”.
GI
MA
EM
LC
EC
FE
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0745 LINE PRESSURE SOLENOID VALVE
Possible Cause
AT-167
Wiring Diagram — AT — LPSV
NHAT0065
MAT814A
SAT307K
DTC P0745 LINE PRESSURE SOLENOID VALVE
Wiring Diagram — AT — LPSV
AT-168
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст