Infiniti M45 (Y34). Manual - part 74

DTC P1752 INPUT CLUTCH SOLENOID VALVE

AT-181

D

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A

B

AT

TCM terminal and data are reference value. Measured between each terminal and ground.

Diagnostic Procedure

ACS0048V

1. 

CHECK INPUT SIGNALS

 With CONSULT-II

1.

Start engine.

2.

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

3.

Read out the value of “I/C SOLENOID” while driving.

 Without CONSULT-II

1.

Start engine.

2.

 Check voltage between TCM connector and ground.

OK or NG

OK >> GO 

TO 

6.

NG

>> GO TO 2.

Terminal   

No.

Wire 

color

Item

Condition

Data (Approx.)

10

R/W

Input clutch sole-
noid valve

When 

vehicle 
cruises

When the solenoid valve operating (in 1st gear, 2nd gear, 
or 3rd gear)

More than 2.0V 

When the solenoid valve is not operating (4th gear or 5th 
gear)

0V

Item name

Condition 

Display value (Approx.)

I/C SOLENOID

Input clutch solenoid 
valve operates. 

0.6 - 0.8 A

Other conditions

0 - 0.05 A

SCIA4462E

Item

 Con-

nector 

No.

 Terminal 

No.

 Condition

Data 

(Approx.)

Input 

clutch 

solenoid 

valve

 F103

 10 (R/

W) - 

Ground

When 
vehicle 
cruises

When the solenoid 

valve operating (in 1st 

gear, 2nd gear, or 3rd 

gear)

More than 

2V 

When the solenoid 

valve is not operating 
(4th gear or 5th gear)

0V

SCIA4573E

AT-182

DTC P1752 INPUT CLUTCH SOLENOID VALVE

2. 

CHECK INPUT CLUTCH SOLENOID VALVE CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect A/T unit assembly harness connector at the trans-
mission right side.

3.

Check the resistance between terminal and ground.

OK or NG

OK >> GO 

TO 

5.

NG

>> GO TO 3.

3. 

CHECK TERMINAL CORD ASSEMBLY

1.

Remove oil pan. Refer to 

AT-312, "Control Valve Assembly"

 .

2.

Disconnect A/T unit assembly harness connector and control valve assembly harness connector.

3.

Check continuity between A/T unit assembly harness connector
and control valve assembly harness connector.

4.

If OK, check harness for short to ground and short to power.

OK or NG

OK

>> GO TO 4.

NG

>> Repair open circuit or short to ground or short to power in harness or connectors.

4. 

CHECK VALVE RESISTANCE

Check valve resistance

●

Refer to 

AT-183, "Component Inspection"

 .

OK or NG

OK >> GO 

TO 

6.

NG

>> Replace the control valve assembly. Refer to 

AT-312, "Control Valve Assembly"

 .

Solenoid valve

Connector 

No.

Terminal No. 

Resistance (Approx.)

Input clutch solenoid 
valve

F27

6 - Ground

 3 - 9 

Ω

SCIA1837E

Item

Connector No.

Terminal No. (Wire color)

Continuity

A/T unit assembly 
harness connector

F27

6 (R/W)

Yes

Control valve assem-
bly harness connec-
tor

F301

9 (R/W)

SCIA3073E

DTC P1752 INPUT CLUTCH SOLENOID VALVE

AT-183

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5. 

CHECK POWER SOURCE CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect TCM connector.

3.

Check continuity between A/T unit assembly harness connector
and TCM connector.

4.

If OK, check harness for short to ground and short to power.

5.

Reinstall any part removed.

OK or NG

OK

>> GO TO 6.

NG

>> Repair open circuit or short to ground or short to power in harness or connectors.

6. 

CHECK DTC

Perform “DTC Confirmation Procedure”. Refer to 

AT-179, "DTC Confirmation Procedure"

 .

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 7.

7. 

CHECK TCM

1.

Check TCM input/output signal. Refer to 

AT-86, "TCM Input/Output Signal Reference Values"

 .

2.

If NG, recheck TCM pin terminals for damage or loose connection with harness connector.

OK or NG

OK

>> INSPECTION END

NG

>> Repair or replace damaged parts.

Component Inspection

ACS0048W

INPUT CLUTCH SOLENOID VALVE
Resistance Check

1.

Turn ignition switch OFF.

2.

Remove oil pan. Refer to 

AT-312, "Control Valve Assembly"

 .

3.

Disconnect control valve assembly harness connector.

4.

Check resistance between terminal and ground.

5.

If NG, replace control valve assembly. Refer to 

AT-312, "Control

Valve Assembly"

 .

Item

Connector No.

Terminal No. 

(Wire color)

Continuity

TCM

F103

10 (R/W)

Yes

A/T unit assembly harness 
connector

F27

6 (R/W)

SCIA1838E

Solenoid Valve

Connector No.

Terminal No. 

(Wire color)

Resistance 

(Approx.)

Input clutch solenoid 
valve

F301

9 (G) - Ground

3 - 9 

Ω

SCIA3074E

AT-184

DTC P1752 INPUT CLUTCH SOLENOID VALVE

Operation Check

●

Check solenoid valve by listening for its operating sound while
applying battery voltage to the terminal 9 and ground.

SCIA3108E