Infiniti G35 (V35). Manual - part 33

DTC P0745 LINE PRESSURE SOLENOID VALVE

AT-123

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DTC P0745 LINE PRESSURE SOLENOID VALVE

PFP:31940

Description

NCS000DM

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-II Reference Value

NCS000DN

On Board Diagnosis Logic

NCS000DO

●

This is an OBD-II self-diagnostic item.

●

Diagnostic trouble code “P0745 L/PRESS SOL/CIRC” with CONSULT-II or 4th judgment flicker without
CONSULT-II 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

NCS000DP

●

Harness or connectors.
(Solenoid circuit is open or shorted.)

●

Line pressure solenoid valve.

DTC Confirmation Procedure

NCS000DQ

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.

2.

Select “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T”
with CONSULT-II.

3.

Touch “START”.

4.

Start engine and wait for at least 5 seconds.

5.

If DTC is detected, go to 

AT-124, "Diagnostic Procedure"

 .

 WITH GST

Follow the procedure “WITH CONSULT-II”.

Item name

Condition 

Display value (Approx.)

LINE PRES SOL

During driving

0.2 - 0.6 A

BCIA0031E

AT-124

DTC P0745 LINE PRESSURE SOLENOID VALVE

Diagnostic Procedure

NCS000DR

1. 

CHECK INPUT SIGNAL

 With CONSULT-II

1.

Turn ignition switch ON.

2.

Select “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T”
with CONSULT-II.

3.

Start the 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 

AT-172, "MAIN POWER SUPPLY AND GROUND CIR-

CUIT"

 .

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 control valve with TCM. Refer to 

AT-225, "Control Valve with TCM and A/T Fluid Temper-

ature Sensor 2"

 .

NG

>> Repair or replace damaged parts.

4. 

CHECK DTC

Perform 

AT-123, "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

DTC P1705 THROTTLE POSITION SENSOR

AT-125

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DTC P1705 THROTTLE POSITION SENSOR

PFP:22620

Description

NCS000E2

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

NCS000E3

On Board Diagnosis Logic

NCS000E4

●

This is an OBD-II self-diagnostic item.

●

Diagnostic trouble code “P1705 TP SEN/CIRC A/T” with CONSULT-II or 15th judgment 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

NCS000E5

Harness or connectors.
(Sensor circuit is open or shorted.)

DTC Confirmation Procedure

NCS000E6

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.

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-126, "Diagnostic Procedure"

 .

 WITH GST

Follow the procedure “WITH CONSULT-II”.

Item name

Condition 

Display value

ACCELE POSI

Released accelerator pedal

0.0/8

Fully depressed accelerator pedal

8.0/8

BCIA0031E

AT-126

DTC P1705 THROTTLE POSITION SENSOR

Diagnostic Procedure

NCS000E7

1. 

CHECK CAN COMMUNICATION LINE

Perform self-diagnosis. Refer to 

AT-86, "SELF-DIAGNOSTIC RESULT MODE"

 , 

AT-95, "Diagnostic Procedure

Without CONSULT-II"

 .

Is a malfunction in the CAN communication indicated in the results?

YES

>> Check CAN communication line. Refer to 

AT-98, "DTC U1000 CAN COMMUNICATION LINE"

 .

NO

>> GO TO 2.

2. 

CHECK DTC WITH TCM 

 With CONSULT-II

1.

Turn ignition switch ON.

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-86, "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.

2.

Select “SELF-DIAG RESULTS” mode for “ENGINE” with CON-
SULT-II. Refer to 

EC-121, "CONSULT-II Function (ENGINE)"

 .

OK or NG

OK

>> GO TO 4.

NG

>> Check the DTC detected item. Refer to 

EC-121, "CON-

SULT-II Function (ENGINE)"

 .

●

If CAN communication line is detected, go to 

AT-98,

"DTC U1000 CAN COMMUNICATION LINE"

 .

4. 

CHECK DTC

Perform 

AT-125, "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-172, "MAIN POWER SUPPLY AND GROUND CIR-

CUIT"

 .

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