Infiniti FX35, FX50 (S51). Manual - part 1873

P2807 PRESSURE CONTROL SOLENOID G

TM-299

< DTC/CIRCUIT DIAGNOSIS >

[7AT: RE7R01B (VK50VE)]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

P2807 PRESSURE CONTROL SOLENOID G

Description

INFOID:0000000005250312

• The direct clutch solenoid valve is controlled by the TCM in response to signals transmitted from the trans-

mission range switch, output speed sensor and accelerator pedal position sensor. Gears will then be shifted
to the optimum position.

• The direct clutch solenoid valve controls the direct clutch control valve in response to a signal transmitted

from the TCM.

DTC Logic

INFOID:0000000005250313

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

CAUTION:

Always drive vehicle at a safe speed.
NOTE:
If “DTC CONFIRMATION PROCEDURE” has been previously performed, always turn ignition switch
OFF. Then wait at least 10 seconds before performing the next test.

1.

PRECONDITIONING

If “DTC CONFIRMATION PROCEDURE” has been previously conducted, always turn ignition switch OFF and
wait at least 10 seconds before conducting the next test.

>> GO TO 2.

2.

CHECK DTC DETECTION

 With CONSULT-III

1.

Start the engine. 

2.

Select “BATTERY VOLT”, “MANU MODE SW”, “GEAR” and “VHCL/S SE-A/T” in “Data Monitor” in
“TRANSMISSION”.

3.

Drive vehicle and maintain the following conditions for 5 seconds or more.

4.

Perform “Self Diagnostic Results” in “TRANSMISSION”.

 With GST

Follow the procedure “With CONSULT-III”.
Is “P2807” detected?

YES

>> Go to 

TM-299, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000005250314

1.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-36, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> Replace A/T assembly. Refer to 

TM-362, "Exploded View"

.

DTC

Trouble diagnosis name

DTC is detected if...

Possible cause

P2807

Pressure Control Solenoid G

The direct clutch solenoid valve 
monitor value is 0.4 A or less 
when the direct clutch solenoid 
valve command value is more 
than 0.75 A.

• Harness or connectors

(Solenoid valve circuit is 
open or shorted.)

• Direct clutch solenoid valve

BATTERY VOLT

: 9 V or more

MANU MODE SW

: ON

GEAR

: 1st

VHCL/S SE-A/T

: 10 km/h (7 MPH) or more

TM-300

< DTC/CIRCUIT DIAGNOSIS >

[7AT: RE7R01B (VK50VE)]

P2807 PRESSURE CONTROL SOLENOID G

NO

>> Repair or replace damaged parts.

MAIN POWER SUPPLY AND GROUND CIRCUIT

TM-301

< DTC/CIRCUIT DIAGNOSIS >

[7AT: RE7R01B (VK50VE)]

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

MAIN POWER SUPPLY AND GROUND CIRCUIT

Description

INFOID:0000000005523163

Supply power to TCM.

Diagnosis Procedure

INFOID:0000000005523164

1.

CHECK TCM POWER SOURCE (PART 1)

1.

Turn ignition switch OFF.

2.

Disconnect A/T assembly connector.

3.

Check voltage between A/T assembly vehicle side harness connector terminal and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> GO TO 4.

2.

CHECK TCM POWER SOURCE (PART 2)

Check voltage between A/T assembly vehicle side harness connector terminals and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 5.

3.

CHECK TCM GROUND CIRCUIT

Check continuity between A/T assembly vehicle side harness connector terminals and ground.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-36, "Intermittent Incident"

.

NO

>> Repair or replace damaged parts.

4.

DETECT MALFUNCTIONING ITEM

Check the following.
• Harness for short or open between battery positive terminal and A/T assembly vehicle side harness connec-

tor terminal 2. Refer to 

PG-6, "Wiring Diagram - BATTERY POWER SUPPLY -"

.

• Battery
• 10A fuse (No.36, located in the fuse, fusible link and relay box). Refer to 

PG-157, "Fuse and Fusible Link

Arrangement"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-36, "Intermittent Incident"

.

NO

>> Repair or replace damaged parts.

A/T assembly vehicle side harness connector

Ground

Condition

Voltage (Approx.)

Connector

Terminal

F51

2

Always

Battery voltage

A/T assembly vehicle side harness connector

Ground

Condition

Voltage (Approx.)

Connector

Terminal

F51

1

Turn ignition switch ON

Battery voltage

Turn ignition switch OFF

0 V

6

Turn ignition switch ON

Battery voltage

Turn ignition switch OFF

0 V

A/T assembly vehicle side harness connector

Ground

Continuity

Connector

Terminal

F51

5

Existed

10

TM-302

< DTC/CIRCUIT DIAGNOSIS >

[7AT: RE7R01B (VK50VE)]

MAIN POWER SUPPLY AND GROUND CIRCUIT

5.

CHECK HARNESS BETWEEN IPDM E/R AND A/T ASSEMBLY (PART 1)

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R connector.

3.

Check continuity between IPDM E/R vehicle side harness connector terminal and A/T assembly vehicle
side harness connector terminals.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace damaged parts.

6.

CHECK HARNESS BETWEEN IPDM E/R AND A/T ASSEMBLY (PART 2)

Check continuity between A/T assembly vehicle side harness connector terminal and ground.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace damaged parts.

7.

DETECT MALFUNCTIONING ITEM

Check the following.
• Harness for short or open between ignition switch and IPDM E/R. Refer to 

PG-81, "Wiring Diagram - IGNI-

TION POWER SUPPLY -"

.

• Ignition switch
• 10A fuse (No.43, located in the IPDM E/R). Refer to 

PG-158, "Fuse, Connector and Terminal Arrangement"

.

• IPDM E/R

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-36, "Intermittent Incident"

.

NO

>> Repair or replace damaged parts.

IPDM E/R vehicle side harness connector

A/T assembly vehicle side harness connector

Continuity

Connector

Terminal

Connector

Terminal

E7

58

F51

1

Existed

6

A/T assembly vehicle side harness connector

Ground

Continuity

Connector

Terminal

E51

1

Not existed

6