Infiniti F50. Manual - part 91

TROUBLE DIAGNOSIS FOR SYMPTOMS

AT-249

D

E

F

G

H

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J

K

L

M

A

B

AT

6. 

DETECT MALFUNCTIONING ITEM

1.

Control valve assembly. Refer to 

AT-289, "Control Valve Assembly"

 .

2.

Disassemble A/T. Refer to 

AT-307, "DISASSEMBLY"

 .

3.

Check the following items:

–

Oil pump assembly. Refer to 

AT-321, "Oil Pump"

 .

OK or NG

OK

>> GO TO 8.

NG

>> Repair or replace damaged parts.

7. 

DETECT MALFUNCTIONING ITEM

1.

Control valve assembly. Refer to 

AT-289, "Control Valve Assembly"

 .

2.

Disassemble A/T. Refer to 

AT-307, "DISASSEMBLY"

 .

3.

Check the following items:

–

Oil pump assembly. Refer to 

AT-321, "Oil Pump"

 .

–

Power train system. Refer to 

AT-307, "DISASSEMBLY"

 .

–

Transmission case. Refer to 

AT-307, "DISASSEMBLY"

 .

OK or NG

OK

>> GO TO 8.

NG

>> Repair or replace damaged parts.

8. 

CHECK A/T FLUID CONDITION

1.

Remove oil pan. Refer to 

AT-289, "Control Valve Assembly"

 .

2.

Check A/T fluid condition.

OK or NG

OK

>> GO TO 9.

NG

>> GO TO 12.

9. 

DETECT MALFUNCTIONING ITEM

●

Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to 

AT-60,

"Symptom Chart"

 .

OK or NG

OK

>> GO TO 10.

NG

>> Repair or replace damaged parts.

10. 

CHECK SYMPTOM

Check again.
OK or NG

OK

>> INSPECTION END

NG

>> GO TO 11.

SAT171B

AT-250

TROUBLE DIAGNOSIS FOR SYMPTOMS

11. 

PERFORM TCM INSPECTION

1.

Perform TCM input/output signal inspection.

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.

12. 

DETECT MALFUNCTIONING ITEM

●

Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to 

AT-60,

"Symptom Chart"

 .

OK or NG

OK

>> GO TO 10.

NG

>> Repair or replace damaged parts.

TROUBLE DIAGNOSIS FOR SYMPTOMS

AT-251

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AT

Vehicle Cannot Be Started From D

1

ECS0089E

SYMPTOM:

Vehicle cannot be started from D

1

  on cruise test - Part 1.

DIAGNOSTIC PROCEDURE

1. 

CONFIRM THE SYMPTOM

Check if vehicle creeps in “R” position.
OK or NG

OK

>> GO TO 2.

NG

>> Refer to 

AT-245, "Vehicle Does Not Creep Backward In “R” Position"

 . 

2. 

CHECK SELF-DIAGNOSTIC RESULTS

Execute self-diagnosis.

Is any malfunction detected by self-diagnostic results?

YES

>> Check the malfunctioning system.

NO

>> GO TO 3.

3. 

CHECK ACCELERATOR POSITION (APP) SENSOR

Check accelerator pedal position (APP) sensor. Refer to 

AT-144, "DTC P1705 THROTTLE POSITION SEN-

SOR"

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace accelerator pedal position (APP) sensor.

4. 

CHECK A/T FLUID LEVEL

Check A/T fluid level again. Refer to 

AT-14, "Checking A/T Fluid"

 .

OK or NG

OK

>> GO TO 5.

NG

>> Refill ATF.

5. 

CHECK LINE PRESSURE

Check line pressure at the engine stall point. Refer to 

AT-52, "LINE

PRESSURE TEST"

 .

OK or NG

OK

>> GO TO 8.

NG  - 1 >> Line pressure high. GO TO 6.
NG  - 2 >> Line pressure low. GO TO 7.

SAT638A

SAT494G

AT-252

TROUBLE DIAGNOSIS FOR SYMPTOMS

6. 

DETECT MALFUNCTIONING ITEM

1.

Control valve assembly. Refer to 

AT-289, "Control Valve Assembly"

 .

2.

Disassemble A/T. Refer to 

AT-307, "DISASSEMBLY"

 .

3.

Check the following items:

–

Oil pump assembly. Refer to 

AT-321, "Oil Pump"

 .

OK or NG

OK

>> GO TO 8.

NG

>> Repair or replace damaged parts.

7. 

DETECT MALFUNCTIONING ITEM

1.

Control valve assembly. Refer to 

AT-289, "Control Valve Assembly"

 .

2.

Disassemble A/T. Refer to 

AT-307, "DISASSEMBLY"

 .

3.

Check the following items:

–

Oil pump assembly. Refer to 

AT-321, "Oil Pump"

 .

–

Power train system. Refer to 

AT-307, "DISASSEMBLY"

 .

–

Transmission case. Refer to 

AT-307, "DISASSEMBLY"

 .

OK or NG

OK

>> GO TO 8.

NG

>> Repair or replace damaged parts.

8. 

CHECK A/T FLUID CONDITION

1.

Remove oil pan. Refer to 

AT-289, "Control Valve Assembly"

 .

2.

Check A/T fluid condition.

OK or NG

OK

>> GO TO 9.

NG

>> GO TO 12.

9. 

DETECT MALFUNCTIONING ITEM

●

Check the malfunction items. If any items are damaged, repair or replace damaged parts. Refer to 

AT-60,

"Symptom Chart"

 .

OK or NG

OK

>> GO TO 10.

NG

>> Repair or replace damaged parts.

10. 

CHECK SYMPTOM

Check again.
OK or NG

OK

>> INSPECTION END

NG

>> GO TO 11.

SAT171B