Nissan Frontier D22. Instruction — part 99

TROUBLE DIAGNOSES FOR SYMPTOMS

AT-365

[RE4R01A]

D

E

F

G

H

I

J

K

L

M

A

B

AT

3.

CHECK LINE PRESSURE

Check line pressure at idle with selector lever in R position. Refer to

AT-214, "Line Pressure Test"

.

OK or NG

OK

>> GO TO 4.

NG

>> 1. Remove control valve assembly. Refer to

AT-402,

"REMOVAL"

.

2. Check the following items:

–

Valves to control line pressure (Pressure regulator
valve, pressure modifier valve, pilot valve and pilot fil-
ter)

–

Line pressure solenoid valve

3. Disassemble A/T.
4. Check the following items:

–

Oil pump assembly

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 6.

5.

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.

SAT494G

SAT171B

AT-366

[RE4R01A]

TROUBLE DIAGNOSES FOR SYMPTOMS

6.

DETECT MALFUNCTIONING ITEM

1.

Remove control valve assembly. Refer to

AT-402, "REMOVAL"

.

2.

Check the following items:

–

Valves to control line pressure (Pressure regulator valve, pressure modifier valve, pilot valve and pilot fil-
ter)

–

Line pressure solenoid valve

3.

Disassemble A/T.

4.

Check the following items:

–

Oil pump assembly

–

Torque converter

–

Reverse clutch assembly

–

High clutch assembly

–

Low & reverse brake assembly

–

Low one-way clutch

>> Repair or replace damaged parts.

TROUBLE DIAGNOSES FOR SYMPTOMS

AT-367

[RE4R01A]

D

E

F

G

H

I

J

K

L

M

A

B

AT

7. Vehicle Does Not Creep Forward In D, 2 Or 1 Position

ECS007OD

SYMPTOM:

●

Vehicle does not creep forward when selecting D, 2 or 1 position.

1.

CHECK A/T FLUID LEVEL

Check A/T fluid level again.

OK or NG

OK

>> GO TO 2.

NG

>> Refill ATF.

2.

CHECK STALL TEST

Check stall revolution with selector lever in D position.
Refer to

AT-211, "Stall Test"

.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 6.

3.

CHECK LINE PRESSURE

Check line pressure at idle with selector lever in R position.
Refer to

AT-214, "Line Pressure Test"

.

OK or NG

OK

>> GO TO 4.

NG

>> 1. Remove control valve assembly.

Refer to

AT-402, "REMOVAL"

.

2. Check the following items:

–

Valves to control line pressure (Pressure regulator
valve, pressure modifier valve, pilot valve and pilot fil-
ter)

–

Line pressure solenoid valve

3. Disassemble A/T.

4. Check the following items:

–

Oil pump assembly

SAT638A

SAT493G

SAT494G

AT-368

[RE4R01A]

TROUBLE DIAGNOSES FOR SYMPTOMS

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 6.

5.

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.

6.

DETECT MALFUNCTIONING ITEM

1.

Remove control valve assembly. Refer to

AT-402, "REMOVAL"

.

2.

Check the following items:

–

Valves to control line pressure (Pressure regulator valve, pressure modifier valve, pilot valve and pilot fil-
ter)

–

Line pressure solenoid valve

3.

Disassemble A/T.

4.

Check the following items:

–

Oil pump assembly

–

Forward clutch assembly

–

Forward one-way clutch

–

Low one-way clutch

–

Low & reverse brake assembly

–

Torque converter

>> Repair or replace damaged parts.

SAT171B