Nissan Frontier D22. Instruction — part 102

TROUBLE DIAGNOSES FOR SYMPTOMS

AT-377

[RE4R01A]

D

E

F

G

H

I

J

K

L

M

A

B

AT

4.

CHECK A/T FLUID CONDITION

1.

Remove oil pan.

2.

Check A/T fluid condition.

OK or NG

OK

>> GO TO 5.

NG

>> GO TO 7.

5.

DETECT MALFUNCTIONING ITEM

1.

Remove control valve assembly. Refer to

AT-402, "REMOVAL"

.

2.

Check the following items:

–

Shift valve B

–

Overrun clutch control valve

–

Shift solenoid valve B

–

Pilot valve

–

Pilot filter

OK or NG

OK

>> GO TO 6.

NG

>> Repair or replace damaged parts.

6.

CHECK SYMPTOM

Check again.

OK or NG

OK

>> INSPECTION END.

NG

>> 1. Perform TCM input/output signal inspection.

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

7.

DETECT MALFUNCTIONING ITEM

1.

Remove control valve assembly. Refer to

AT-402, "REMOVAL"

.

2.

Check the following items:

–

Shift valve B

–

Overrun clutch control valve

–

Shift solenoid valve B

–

Pilot valve

–

Pilot filter

3.

Disassemble A/T.

4.

Check the following items:

–

Servo piston assembly

–

Brake band

–

Torque converter

–

Oil pump assembly

OK or NG

OK

>> GO TO 6.

NG

>> Repair or replace damaged parts.

SAT171B

AT-378

[RE4R01A]

TROUBLE DIAGNOSES FOR SYMPTOMS

12. A/T Does Not Perform Lock-up

ECS007OI

SYMPTOM:

●

A/T does not perform lock-up at the specified speed.

1.

CHECK SELF-DIAGNOSTIC RESULTS

Does self-diagnosis show damage to torque converter clutch sole-
noid valve circuit after Cruise Test?
Yes or No

Yes

>> Check torque converter clutch solenoid valve circuit.

Refer to

AT-293, "DTC P0740 TORQUE CONVERTER

CLUTCH SOLENOID VALVE"

.

No

>> GO TO 2.

2.

CHECK THROTTLE POSITION SENSOR

Check throttle position sensor. Refer to

EC-743, "DTC P0121 TP

SENSOR"

(VG33E only) or

EC-1350, "DTC P0121 TP SENSOR"

(VG33ER only).

OK or NG

OK

>> GO TO 3.

NG

>> Repair or replace throttle position sensor.

3.

DETECT MALFUNCTIONING ITEM

1.

Remove control valve. Refer to

AT-402, "REMOVAL"

.

2.

Check following items:

–

Torque converter clutch control valve

–

Torque converter relief valve

–

Torque converter clutch solenoid valve

–

Pilot valve

–

Pilot filter

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace damaged parts.

4.

CHECK SYMPTOM

Check again.

OK or NG

OK

>> INSPECTION END.

NG

>> 1. Perform TCM input/output signal inspection.

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

SAT346H

AAT495A

TROUBLE DIAGNOSES FOR SYMPTOMS

AT-379

[RE4R01A]

D

E

F

G

H

I

J

K

L

M

A

B

AT

13. A/T Does Not Hold Lock-up Condition

ECS007OJ

SYMPTOM:

●

A/T does not hold lock-up condition for more than 30 seconds.

1.

CHECK DIAGNOSTIC RESULTS

Does self-diagnosis show damage to engine speed signal circuit
after Cruise Test?
Yes or No

Yes

>> Check engine speed signal circuit. Refer to

AT-266,

"DTC P0725 ENGINE SPEED SIGNAL"

.

No

>> GO TO 2.

2.

CHECK A/T FLUID CONDITION

1.

Remove oil pan.

2.

Check A/T fluid condition.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 5.

3.

DETECT MALFUNCTIONING ITEM

1.

Remove control valve assembly. Refer to

AT-402, "REMOVAL"

.

2.

Check the following items:

–

Torque converter clutch control valve

–

Pilot valve

–

Pilot filter

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace damaged parts.

4.

CHECK SYMPTOM

Check again.

OK or NG

OK

>> INSPECTION END.

NG

>> 1. Perform TCM input/output signal inspection.

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

SAT347H

SAT171B

AT-380

[RE4R01A]

TROUBLE DIAGNOSES FOR SYMPTOMS

5.

DETECT MALFUNCTIONING ITEM

1.

Remove control valve assembly. Refer to

AT-402, "REMOVAL"

.

2.

Check the following items:

–

Torque converter clutch control valve

–

Pilot valve

–

Pilot filter

3.

Disassemble A/T.

4.

Check torque converter and oil pump assembly.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace damaged parts.