Infiniti Q45. Manual — part 53
DTC P0745 LINE PRESSURE SOLENOID VALVE
AT-125
D
E
F
G
H
I
J
K
L
M
A
B
AT
Diagnostic Procedure
NCS000W7
1.
CHECK INPUT SIGNAL
With CONSULT-II
1.
Turn ignition switch ON. (Do not start engine.)
2.
Select “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T”
with CONSULT-II.
3.
Start engine.
4.
Read out the value of “LINE PRES SOL” during 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
AT-173, "MAIN POWER SUPPLY AND GROUND CIR-
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace damaged parts.
3.
DETECT MALFUNCTIONING ITEM
Check the following.
●
The A/T assembly harness connector pin terminals for damage or loose connection with harness connec-
tor.
OK or NG
OK
>> Replace the control valve with TCM. Refer to
AT-225, "Control Valve with TCM and A/T Fluid Tem-
NG
>> Repair or replace damaged parts.
4.
CHECK DTC
Perform “DTC Confirmation Procedure”. Refer to
AT-124, "DTC Confirmation Procedure"
.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 2.
Item name
Condition
Display value (Approx.)
LINE PRES SOL
During driving
0.2 - 0.6 A
SCIA4793E
AT-126
DTC P1705 THROTTLE POSITION SENSOR
DTC P1705 THROTTLE POSITION SENSOR
PFP:22620
Description
NCS000WI
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-II Reference Value
NCS000WJ
On Board Diagnosis Logic
NCS000WK
●
This is not an OBD-II self-diagnostic item.
●
Diagnostic trouble code “P1705 TP SEN/CIRC A/T” with CONSULT-II or 15th judgement flicker without
CONSULT-II is detected when TCM does not receive the proper accelerator pedal position signals (input
by CAN communication) from ECM.
Possible Cause
NCS000WL
Harness or connectors
(Sensor circuit is open or shorted.)
DTC Confirmation Procedure
NCS000WM
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-II
1.
Turn ignition switch ON. (Do not start engine.)
2.
Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for
“A/T” with CONSULT-II.
3.
Touch “START”.
4.
Start engine and let it idle for 1 second.
5.
If DTC is detected, go to
AT-127, "Diagnostic Procedure"
WITH GST
Follow the procedure “WITH CONSULT-II”.
Item name
Condition
Display value (Approx.)
ACCELE POSI
Released accelerator pedal.
0.0/8
Fully depressed accelerator pedal.
8.0/8
BCIA0031E
DTC P1705 THROTTLE POSITION SENSOR
AT-127
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E
F
G
H
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K
L
M
A
B
AT
Diagnostic Procedure
NCS000WN
1.
CHECK CAN COMMUNICATION LINE
Perform the self-diagnosis. Refer to
AT-87, "SELF-DIAGNOSTIC RESULT MODE"
Is a malfunction in the CAN communication indicated in the results?
YES
>> Check CAN communication line. Refer to
AT-99, "DTC U1000 CAN COMMUNICATION LINE"
.
NO
>> GO TO 2.
2.
CHECK DTC WITH TCM
With CONSULT-II
1.
Turn ignition switch ON. (Do not start engine.)
2.
Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for
“A/T” with CONSULT-II.
3.
Depress accelerator pedal and read out the value of “ACCELE
POSI”.
4.
Select “SELF-DIAG RESULTS” mode for “A/T” with CONSULT-
II. Refer to
AT-87, "SELF-DIAGNOSTIC RESULT MODE"
OK or NG
OK
>> GO TO 4.
NG
>> GO TO 3.
3.
CHECK DTC WITH ECM
With CONSULT-II
1.
Turn ignition switch ON. (Do not start engine.)
2.
Select “SELF-DIAG RESULTS” mode for “ENGINE” with CON-
SULT-II. Refer to
EC-115, "CONSULT-II Function (ENGINE)"
.
OK or NG
OK
>> GO TO 4.
NG
>> Check the DTC detected item. Refer to
●
If CAN communication line is detected, go to
"DTC U1000 CAN COMMUNICATION LINE"
4.
CHECK DTC
Perform “DTC Confirmation Procedure”. Refer to
AT-126, "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
AT-173, "MAIN POWER SUPPLY AND GROUND CIR-
OK or NG
OK
>> GO TO 6.
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
PCIA0070E
BCIA0030E
AT-128
DTC P1705 THROTTLE POSITION SENSOR
6.
DETECT MALFUNCTIONING ITEM
Check the following.
●
The A/T assembly harness connector pin terminals for damage or loose connection with harness connec-
tor.
OK or NG
OK
>> Replace the control valve with TCM. Refer to
AT-225, "Control Valve with TCM and A/T Fluid Tem-
NG
>> Repair or replace damaged parts.
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