Infiniti FX35 / FX45. Manual — part 50
AT-128
< SERVICE INFORMATION >
DTC P0745 LINE PRESSURE SOLENOID VALVE
DTC P0745 LINE PRESSURE SOLENOID VALVE
Description
INFOID:0000000001327221
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.
CONSULT-III Reference Value in Data Monitor Mode
INFOID:0000000001327222
On Board Diagnosis Logic
INFOID:0000000001327223
Diagnostic trouble code “P0745 L/PRESS SOL/CIRC” with CONSULT-III or 4th judgement flicker without
CONSULT-III is detected under the following conditions.
• When TCM detects an improper voltage drop when it tries to operate the solenoid valve.
• When TCM detects as irregular by comparing target value with monitor value.
Possible Cause
INFOID:0000000001327224
• Harness or connectors
(Solenoid circuit is open or shorted.)
• Line pressure solenoid valve
DTC Confirmation Procedure
INFOID:0000000001327225
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.
WITH CONSULT-III
1.
Turn ignition switch ON.
2.
Select “MAIN SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
3.
Touch “START”.
4.
Engine start and wait at least 5 seconds.
5.
If DTC is detected, go to “
WITH GST
Follow the procedure “WITH CONSULT-III”.
Diagnosis Procedure
INFOID:0000000001327226
1.
CHECK INPUT SIGNAL
With CONSULT-III
1.
Turn ignition switch ON.
2.
Select “MAIN SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
3.
Start engine.
4.
Read out the value of “LINE PRES SOL” while driving.
OK or NG
OK
>> GO TO 4.
NG
>> GO TO 2.
2.
CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to
Item name
Condition
Display value (Approx.)
LINE PRES SOL
During driving
0.2 - 0.6 A
Item name
Condition
Display value (Approx.)
LINE PRES SOL
During driving
0.2 - 0.6 A
DTC P0745 LINE PRESSURE SOLENOID VALVE
AT-129
< SERVICE INFORMATION >
D
E
F
G
H
I
J
K
L
M
A
B
AT
N
O
P
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace damaged parts.
3.
DETECT MALFUNCTIONING ITEM
Check A/T assembly harness connector pin terminals for damage or loose connection with harness connector
OK or NG
OK
>> Replace the control valve with TCM. Refer to
AT-215, "Control Valve with TCM and A/T Fluid Tem-
.
NG
>> Repair or replace damaged parts.
4.
CHECK DTC
Perform
AT-128, "DTC Confirmation Procedure"
.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 2.
AT-130
< SERVICE INFORMATION >
DTC P1705 THROTTLE POSITION SENSOR
DTC P1705 THROTTLE POSITION SENSOR
Description
INFOID:0000000001327227
Electric throttle control actuator consists of throttle control motor, accelerator pedal position sensor, throttle
position sensor, etc. The actuator sends a signal to the ECM, and ECM sends signals to TCM with CAN com-
munication.
CONSULT-III Reference Value in Data Monitor Mode
INFOID:0000000001327228
On Board Diagnosis Logic
INFOID:0000000001327229
Diagnostic trouble code “P1705 TP SEN/CIRC A/T” with CONSULT-III or 15th judgement flicker without CON-
SULT-III is detected when TCM does not receive the proper accelerator pedal position signals (input by CAN
communication) from ECM.
Possible Cause
INFOID:0000000001327230
Harness or connectors
(Sensor circuit is open or shorted.)
DTC Confirmation Procedure
INFOID:0000000001327231
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.
WITH CONSULT-III
1.
Turn ignition switch ON.
2.
Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
3.
Touch “START”.
4.
Start engine and let it idle for 1 second.
5.
If DTC is detected, go to
Diagnosis Procedure
INFOID:0000000001327232
1.
CHECK CAN COMMUNICATION LINE
With CONSULT-III
• Perform the self-diagnosis.
Without CONSULT-III
• Perform the self-diagnosis. Refer to
AT-91, "Diagnosis Procedure without CONSULT-III"
.
Is a malfunction in the CAN communication indicated in the results?
YES
>> Check CAN communication line. Refer to
NO
>> GO TO 2.
2.
CHECK DTC WITH TCM
With CONSULT-III
1.
Turn ignition switch ON.
2.
Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for “TRANSMISSION” with CONSULT-III.
3.
Depress accelerator pedal and read out the value of “ACCELE POSI”.
Item name
Condition
Display value (Approx.)
ACCELE POSI
Released accelerator pedal.
0.0/8
Fully depressed accelerator pedal.
8.0/8
DTC P1705 THROTTLE POSITION SENSOR
AT-131
< SERVICE INFORMATION >
D
E
F
G
H
I
J
K
L
M
A
B
AT
N
O
P
4.
Select “SELF-DIAG RESULTS” mode for “TRANSMISSION” with CONSULT-III. Refer to
SULT-III Function (TRANSMISSION)"
OK or NG
OK
>> GO TO 4.
NG
>> GO TO 3.
3.
CHECK DTC WITH ECM
With CONSULT-III
1.
Turn ignition switch ON.
2.
Select “SELF-DIAG RESULTS” mode for “ENGINE” with CONSULT-III. Refer to
EC-695, "CONSULT-III Function (ENGINE)"
(for VK45DE).
OK or NG
OK
>> GO TO 4.
NG
>>
Check the DTC detected item. Refer to
EC-117, "CONSULT-III Function (ENGINE)"
VQ35DE) or
EC-695, "CONSULT-III Function (ENGINE)"
(for VK45DE).
• If CAN communication line is detected, go to
4.
CHECK DTC
Perform
AT-130, "DTC Confirmation Procedure"
.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 5.
5.
CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer to
.
OK or NG
OK
>> GO TO 6.
NG
>> Repair or replace damaged parts.
6.
DETECT MALFUNCTIONING ITEM
Check A/T assembly harness connector pin terminals for damage or loose connection with harness connector.
OK or NG
OK
>> Replace the control valve with TCM. Refer to
AT-215, "Control Valve with TCM and A/T Fluid Tem-
.
NG
>> Repair or replace damaged parts.
Item name
Condition
Display value (Approx.)
ACCELE POSI
Released accelerator pedal.
0.0/8
Fully depressed accelerator pedal.
8.0/8
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