Infiniti M35/M45 Y50. Manual - part 69

TROUBLE DIAGNOSIS FOR SYMPTOMS

AT-199

D

E

F

G

H

I

J

K

L

M

A

B

AT

12. 

DETECT MALFUNCTIONING ITEM

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

AT-64, "Symp-

tom Chart"

  (Symptom No.43).

OK or NG

OK

>> GO TO 10.

NG

>> Repair or replace damaged parts.

Vehicle Cannot Be Started from D

1

NCS001Q6

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-195, "Vehicle Does Not Creep Backward in “R” Position"

 . 

2. 

CHECK SELF-DIAGNOSTIC RESULTS

Perform self-diagnosis. Refer to 

AT-92, "SELF-DIAGNOSTIC RESULT MODE"

 , 

AT-103, "TCM SELF-DIAG-

NOSTIC PROCEDURE (NO TOOLS)"

Is any malfunction detected by self-diagnostic results?

YES

>> Check malfunctioning system. Refer to 

AT-92, "SELF-DIAGNOSTIC RESULT MODE"

 , 

AT-104,

"Judgement Self-diagnosis Code"

 .

NO

>> GO TO 3.

3. 

CHECK ACCELERATOR PEDAL POSITION (APP) SENSOR

Check accelerator pedal position (APP) sensor. Refer to 

AT-113, "DTC P0705 PARK/NEUTRAL POSITION

SWITCH"

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. Refer to 

AT-13, "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-55, "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.

AT-200

TROUBLE DIAGNOSIS FOR SYMPTOMS

6. 

DETECT MALFUNCTIONING ITEM

1.

Check control valve with TCM. Refer to 

AT-236, "Control Valve With TCM and A/T Fluid Temperature Sen-

sor 2"

 .

2.

Disassemble A/T. Refer to 

AT-301, "DISASSEMBLY"

 .

3.

Check the following.

–

Oil pump assembly. Refer to 

AT-322, "Oil Pump"

 .

OK or NG

OK

>> GO TO 8.

NG

>> Repair or replace damaged parts.

7. 

DETECT MALFUNCTIONING ITEM

1.

Check control valve with TCM. Refer to 

AT-236, "Control Valve With TCM and A/T Fluid Temperature Sen-

sor 2"

 .

2.

Disassemble A/T. Refer to 

AT-301, "DISASSEMBLY"

 .

3.

Check the following.

–

Oil pump assembly. Refer to 

AT-322, "Oil Pump"

 .

–

Power train system. Refer to 

AT-301, "DISASSEMBLY"

 .

–

Transmission case. Refer to 

AT-301, "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-236, "Control Valve With TCM and A/T Fluid Temperature Sensor 2"

 .

2.

Check A/T fluid condition. Refer to 

AT-53, "A/T Fluid Condition Check"

 .

OK or NG

OK

>> GO TO 9.

NG

>> GO TO 12.

9. 

DETECT MALFUNCTIONING ITEM

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

AT-64, "Symp-

tom Chart"

  (Symptom No.23).

OK or NG

OK

>> GO TO 10.

NG

>> Repair or replace damaged parts.

10. 

CHECK SYMPTOM

Check again. Refer to 

AT-59, "Cruise Test - Part 1"

 , 

AT-61, "Cruise Test - Part 2"

 .

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 11.

11. 

CHECK TCM

1.

Check TCM input/output signals. Refer to 

AT-89, "TCM Input/Output Signal Reference Values"

 .

2.

If NG, recheck A/T assembly harness connector terminals for damage or loose connection with harness
connector.

OK or NG

OK

>> INSPECTION END

NG

>> Repair or replace damaged parts.

TROUBLE DIAGNOSIS FOR SYMPTOMS

AT-201

D

E

F

G

H

I

J

K

L

M

A

B

AT

12. 

DETECT MALFUNCTIONING ITEM

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

AT-64, "Symp-

tom Chart"

  (Symptom No.23).

OK or NG

OK

>> GO TO 10.

NG

>> Repair or replace damaged parts.

A/T Does Not Shift: D

1

  

→

 D

2

NCS001Q7

SYMPTOM:

The vehicle does not shift-up from the D

1

  to D

2

  gear at the specified speed.

DIAGNOSTIC PROCEDURE

1. 

CONFIRM THE SYMPTOM

Check if vehicle creep forward in “D” position and vehicle can be started from D

1.

OK or NG

OK

>> GO TO 2.

NG

>> Refer to 

AT-197, "Vehicle Does Not Creep Forward in “D” Position"

 , 

AT-199, "Vehicle Cannot Be

Started from D

1

"

 .

2. 

CHECK SELF-DIAGNOSTIC RESULTS

Perform self-diagnosis. Refer to 

AT-92, "SELF-DIAGNOSTIC RESULT MODE"

 , 

AT-103, "TCM SELF-DIAG-

NOSTIC PROCEDURE (NO TOOLS)"

Is any malfunction detected by self-diagnostic results?

YES

>> Check malfunctioning system. Refer to 

AT-92, "SELF-DIAGNOSTIC RESULT MODE"

 , 

AT-104,

"Judgement Self-diagnosis Code"

 .

NO

>> GO TO 3.

3. 

CHECK A/T FLUID LEVEL

Check A/T fluid level. Refer to 

AT-13, "Checking A/T Fluid"

 .

OK or NG

OK

>> GO TO 4.

NG

>> Refill ATF.

4. 

CHECK LINE PRESSURE

Check line pressure at the engine stall point. Refer to 

AT-55, "LINE PRESSURE TEST"

 .

OK or NG

OK

>> GO TO 7.

NG - 1 >> Line pressure high: GO TO 5.
NG - 2 >> Line pressure low: GO TO 6.

5. 

DETECT MALFUNCTIONING ITEM

1.

Check control valve with TCM. Refer to 

AT-236, "Control Valve With TCM and A/T Fluid Temperature Sen-

sor 2"

 .

2.

Disassemble A/T. Refer to 

AT-301, "DISASSEMBLY"

 .

3.

Check the following.

–

Oil pump assembly. Refer to 

AT-322, "Oil Pump"

 .

OK or NG

OK

>> GO TO 7.

NG

>> Repair or replace damaged parts.

AT-202

TROUBLE DIAGNOSIS FOR SYMPTOMS

6. 

DETECT MALFUNCTIONING ITEM

1.

Check control valve with TCM. Refer to 

AT-236, "Control Valve With TCM and A/T Fluid Temperature Sen-

sor 2"

 .

2.

Disassemble A/T. Refer to 

AT-301, "DISASSEMBLY"

 .

3.

Check the following.

–

Oil pump assembly. Refer to 

AT-322, "Oil Pump"

 .

–

Power train system. Refer to 

AT-301, "DISASSEMBLY"

 .

–

Transmission case. Refer to 

AT-301, "DISASSEMBLY"

 .

OK or NG

OK

>> GO TO 7.

NG

>> Repair or replace damaged parts.

7. 

CHECK A/T FLUID CONDITION

1.

Remove oil pan. Refer to 

AT-236, "Control Valve With TCM and A/T Fluid Temperature Sensor 2"

 .

2.

Check A/T fluid condition. Refer to 

AT-53, "A/T Fluid Condition Check"

 .

OK or NG

OK

>> GO TO 8.

NG

>> GO TO 11.

8. 

DETECT MALFUNCTIONING ITEM

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

AT-64, "Symp-

tom Chart"

  (Symptom No.10).

OK or NG

OK

>> GO TO 9.

NG

>> Repair or replace damaged parts.

9. 

CHECK SYMPTOM

Check again. Refer to 

AT-59, "Cruise Test - Part 1"

 , 

AT-61, "Cruise Test - Part 2"

 .

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 10.

10. 

CHECK TCM

1.

Check TCM input/output signals. Refer to 

AT-89, "TCM Input/Output Signal Reference Values"

 .

2.

If NG, recheck A/T assembly harness connector terminals for damage or loose connection with harness
connector.

OK or NG

OK

>> INSPECTION END

NG

>> Repair or replace damaged parts.

11. 

DETECT MALFUNCTIONING ITEM

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

AT-64, "Symp-

tom Chart"

  (Symptom No.10).

OK or NG

OK

>> GO TO 9.

NG

>> Repair or replace damaged parts.