Nissan Frontier D22. Manual - part 18

DTC P1775 TORQUE CONVERTER CLUTCH SOLENOID

AT-41

[RL4R01A]

D

E

F

G

H

I

J

K

L

M

A

B

AT

DTC P1775 TORQUE CONVERTER CLUTCH SOLENOID

PFP:31940

Diagnostic Procedure

ECS007IW

When the malfunction indicator lamp indicates DTC P1775, refer to

EC-524, "DTC P1775 TCC SOLENOID VALVE"

 .

1. 

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect ECM harness connector and torque converter clutch solenoid valve harness connector.

3.

Check resistance between solenoid valve unit harness connector E36 terminal 3 and ECM harness con-
nector F29 terminal 115.

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace harness between ECM and torque

converter clutch solenoid valve.

2. 

CHECK POWER SOURCE CIRCUIT

1.

Turn ignition switch ON.

2.

Check voltage between solenoid valve unit harness connector E36 terminal 1 and ground.

OK or NG

OK

>> GO TO 4.

NG

>> GO TO 3.

AAT127A

Resistance

: Approximately 0

Ω

AAT128A

Voltage

: Battery voltage

AAT129A

AT-42

[RL4R01A]

DTC P1775 TORQUE CONVERTER CLUTCH SOLENOID

3. 

DETECT MALFUNCTIONING ITEM

Check the following items:

●

Ignition switch and fuse
Refer to 

PG-9, "POWER SUPPLY ROUTING"

 .

●

Harness continuity between fuse and torque converter clutch solenoid valve.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace damaged parts.

4. 

CHECK TORQUE CONVERTER CLUTCH SOLENOID VALVE (RESISTANCE)

Check resistance between solenoid valve unit connector E36 terminals 1 and 3.

OK or NG

OK

>> GO TO 5.

NG

>> Replace torque converter clutch solenoid valve.

5. 

CHECK TORQUE CONVERTER CLUTCH SOLENOID VALVE (OPERATION)

1.

Remove torque converter clutch solenoid valve. Refer to 

AT-62, "Removal"

 .

2.

Check torque converter clutch solenoid valve operation.

OK or NG

OK

>> GO TO 6.

NG

>> Replace torque converter clutch solenoid valve.

Resistance

: Approximately 25

Ω

AAT130A

AAT131A

DTC P1775 TORQUE CONVERTER CLUTCH SOLENOID

AT-43

[RL4R01A]

D

E

F

G

H

I

J

K

L

M

A

B

AT

6. 

CHECK CONTROL VALVE

1.

Disassemble control valve assembly. Refer to 

AT-88, "CONTROL VALVE ASSEMBLY"

 .

2.

Check torque converter clutch control valve.

–

Valve, and sleeve slide along valve bore under their own weight.

–

Valve, and sleeve are free from burrs, dents and scratches.

–

Control valve springs are free from damage, deformation and fatigue.

–

Hydraulic line is free from obstacles.

OK or NG

OK

>> GO TO 7.

NG

>> Repair control valve.

7. 

CHECK MALFUNCTION

Is malfunction eliminated?

Yes or No

Yes

>> INSPECTION END.

No

>> Check control valve again. Repair or replace control valve assembly.

SAT740H

AT-44

[RL4R01A]

TROUBLE DIAGNOSES

TROUBLE DIAGNOSES

PFP:00004

Component Inspection

ECS007IX

OVERDRIVE CONTROL SWITCH AND OVERDRIVE CANCEL SOLENOID VALVE

1. 

CHECK O/D OFF INDICATOR LAMP CIRCUIT

1.

Turn ignition switch ON.
(Do not start engine).

2.

Press and release overdrive control switch.

OK or NG

OK

>> GO TO 5.

NG

>> GO TO 2.

2. 

CHECK OVERDRIVE CANCEL RELAY

Refer to 

AT-50, "OVERDRIVE CANCEL RELAY"

OK or NG

OK

>> GO TO 3.

NG

>> Replace overdrive cancel relay.

3. 

DETECT MALFUNCTIONING ITEM

Check the following items:

●

O/D OFF indicator lamp
Refer to 

DI-25, "WARNING LAMPS"

 .

●

Ignition switch and fuse for overdrive hold control module and overdrive cancel solenoid
Refer to 

PG-9, "POWER SUPPLY ROUTING"

 .

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace damaged parts.

WCIA0158E

Resistance

: Approximately 25

Ω