Infiniti M45 (Y34). Manual — part 74

DTC P1752 INPUT CLUTCH SOLENOID VALVE

AT-181

D

E

F

G

H

I

J

K

L

M

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

D

E

F

G

H

I

J

K

L

M

A

B

AT

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