Infiniti M45 (Y34). Manual — part 79

DTC P1762 DIRECT CLUTCH SOLENOID VALVE

AT-201

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

ACS0049L

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 “D/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.)

21

G

Direct clutch sole-
noid valve

When

vehicle
cruises

When the solenoid valve is operating (1st gear or 5th
gear)

More than 2.0V

When the solenoid valve is not operating (2nd gear, 3rd
gear or 4th gear)

0V

Item name

Condition

Display value (Approx.)

D/C SOLENOID

Direct clutch solenoid
valve operates.

0.6 - 0.8 A

Other conditions

0 - 0.05 A

SCIA4575E

Item

Con-

nector

No.

Terminal

No.

Condition

Data

(Approx.)

Direct
clutch

solenoid

valve

F103

21 (G) -

Ground

When
vehicle
cruises

When the solenoid

valve is operating (1st

gear or 5th gear)

More than

2.0V

When the solenoid

valve is not operating

(2nd gear, 3rd gear or

4th gear)

0V

SCIA4576E

AT-202

DTC P1762 DIRECT CLUTCH SOLENOID VALVE

2.

CHECK VALVE RESISTANCE

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-203, "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.)

Direct clutch solenoid
valve

F27

4 - Ground

3 - 9

Ω

SCIA1841E

Item

Connector No.

Terminal No. (Wire color)

Continuity

A/T unit assembly har-
ness connector

F27

4 (W/B)

Yes

Control valve assem-
bly harness connector

F301

7 (W/B)

SCIA3082E

DTC P1762 DIRECT CLUTCH SOLENOID VALVE

AT-203

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-199, "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

ACS0049M

DIRECT 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

21 (G)

Yes

A/T unit assembly harness
connector

F27

4 (G)

SCIA1842E

Solenoid Valve

Connector No.

Terminal No.

(Wire color)

Resistance

(Approx.)

Direct clutch solenoid
valve

F301

7 (L) - Ground

3 - 9

Ω

SCIA3083E

AT-204

DTC P1762 DIRECT CLUTCH SOLENOID VALVE

Operation Check

●

Check solenoid valve by listening for its operating sound while
applying battery voltage to the terminal 7 and ground.

SCIA3084E