Infiniti Q45. Manual - part 74

TROUBLE DIAGNOSIS FOR SYMPTOMS

AT-209

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3. 

CHECK CONTROL LINKAGE

Check the control linkage. Refer to 

AT-218, "Checking of A/T Position"

 .

OK or NG

OK

>> GO TO 4.

NG

>> Adjust control linkage. Refer to 

AT-218, "Adjustment of A/T Position"

 .

4. 

CHECK MANUAL MODE SWITCH

Check the manual mode switch. Refer to 

AT-161, "DTC P1815 MANUAL MODE SWITCH"

 .

OK or NG

OK

>> GO TO 5.

NG

>> Repair or replace damaged parts.

5. 

CHECK A/T FLUID CONDITION

1.

Remove oil pan. Refer to 

AT-225, "Control Valve with TCM and A/T Fluid Temperature Sensor 2"

 .

2.

Check A/T fluid condition. Refer to 

AT-51, "A/T Fluid Condition Check"

 .

OK or NG

OK

>> GO TO 6.

NG

>> GO TO 9.

6. 

DETECT MALFUNCTIONING ITEM

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

AT-61,

"Symptom Chart"

  (Symptom No.48).

OK or NG

OK

>> GO TO 7.

NG

>> Repair or replace damaged parts.

7. 

CHECK SYMPTOM

Check again. Refer to 

AT-59, "Cruise Test - Part 3"

 .

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 8.

8. 

CHECK TCM

1.

Check TCM input/output signals. Refer to 

AT-84, "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.

9. 

DETECT MALFUNCTIONING ITEM

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

AT-61,

"Symptom Chart"

  (Symptom No.48).

OK or NG

OK

>> GO TO 7.

NG

>> Repair or replace damaged parts.

AT-210

TROUBLE DIAGNOSIS FOR SYMPTOMS

A/T Does Not Shift: 3rd Gear 

→

 2nd Gear

NCS0010X

SYMPTOM:

When shifted from M3 to M2 position in manual mode, does not downshift from 3rd to 2nd gear.

DIAGNOSTIC PROCEDURE

1. 

CHECK SELF-DIAGNOSTIC RESULTS

Perform self-diagnosis. Refer to 

AT-87, "SELF-DIAGNOSTIC RESULT MODE"

 , 

AT-97, "Diagnostic Procedure

without CONSULT-II"

 .

Is any malfunction detected by self-diagnostic results?

YES

>> Check the malfunctioning system. Refer to 

AT-87, "SELF-DIAGNOSTIC RESULT MODE"

 , 

AT-98,

"Judgement Self-diagnosis Code"

 .

NO

>> GO TO 2.

2. 

CHECK A/T FLUID LEVEL

Check A/T fluid level. Refer to 

AT-13, "Checking A/T Fluid"

 .

OK or NG

OK

>> GO TO 3.

NG

>> Refill ATF.

3. 

CHECK CONTROL LINKAGE

Check the control linkage. Refer to 

AT-218, "Checking of A/T Position"

 .

OK or NG

OK

>> GO TO 4.

NG

>> Adjust control linkage. Refer to 

AT-218, "Adjustment of A/T Position"

 .

4. 

CHECK MANUAL MODE SWITCH

Check the manual mode switch. Refer to 

AT-161, "DTC P1815 MANUAL MODE SWITCH"

 .

OK or NG

OK

>> GO TO 5.

NG

>> Repair or replace damaged parts.

5. 

CHECK A/T FLUID CONDITION

1.

Remove oil pan. Refer to 

AT-225, "Control Valve with TCM and A/T Fluid Temperature Sensor 2"

 .

2.

Check A/T fluid condition. Refer to 

AT-51, "A/T Fluid Condition Check"

 .

OK or NG

OK

>> GO TO 6.

NG

>> GO TO 9.

6. 

DETECT MALFUNCTIONING ITEM

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

AT-61,

"Symptom Chart"

  (Symptom No.49).

OK or NG

OK

>> GO TO 7.

NG

>> Repair or replace damaged parts.

7. 

CHECK SYMPTOM

Check again. Refer to 

AT-59, "Cruise Test - Part 3"

 .

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 8.

TROUBLE DIAGNOSIS FOR SYMPTOMS

AT-211

D

E

F

G

H

I

J

K

L

M

A

B

AT

8. 

CHECK TCM

1.

Check TCM input/output signals. Refer to 

AT-84, "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.

9. 

DETECT MALFUNCTIONING ITEM

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

AT-61,

"Symptom Chart"

  (Symptom No.49).

OK or NG

OK

>> GO TO 7.

NG

>> Repair or replace damaged parts.

A/T Does Not Shift: 2nd Gear 

→

 1st Gear

NCS0010Y

SYMPTOM:

When shifted from M2 to M1 position in manual mode, does not downshift from 2nd to 1st gear.

DIAGNOSTIC PROCEDURE

1. 

CHECK SELF-DIAGNOSTIC RESULTS

Perform self-diagnosis. Refer to 

AT-87, "SELF-DIAGNOSTIC RESULT MODE"

 , 

AT-97, "Diagnostic Procedure

without CONSULT-II"

 .

Is any malfunction detected by self-diagnostic results?

YES

>> Check the malfunctioning system. Refer to 

AT-87, "SELF-DIAGNOSTIC RESULT MODE"

 , 

AT-98,

"Judgement Self-diagnosis Code"

 .

NO

>> GO TO 2.

2. 

CHECK A/T FLUID LEVEL

Check A/T fluid level. Refer to 

AT-13, "Checking A/T Fluid"

 .

OK or NG

OK

>> GO TO 3.

NG

>> Refill ATF.

3. 

CHECK CONTROL LINKAGE

Check the control linkage. Refer to 

AT-218, "Checking of A/T Position"

 .

OK or NG

OK

>> GO TO 4.

NG

>> Adjust control linkage. Refer to 

AT-218, "Adjustment of A/T Position"

 .

4. 

CHECK MANUAL MODE SWITCH

Check the manual mode switch. Refer to 

AT-161, "DTC P1815 MANUAL MODE SWITCH"

 .

OK or NG

OK

>> GO TO 5.

NG

>> Repair or replace damaged parts.

AT-212

TROUBLE DIAGNOSIS FOR SYMPTOMS

5. 

CHECK A/T FLUID CONDITION

1.

Remove oil pan. Refer to 

AT-225, "Control Valve with TCM and A/T Fluid Temperature Sensor 2"

 .

2.

Check A/T fluid condition. Refer to 

AT-51, "A/T Fluid Condition Check"

 .

OK or NG

OK

>> GO TO 6.

NG

>> GO TO 9.

6. 

DETECT MALFUNCTIONING ITEM

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

AT-61,

"Symptom Chart"

  (Symptom No.50).

OK or NG

OK

>> GO TO 7.

NG

>> Repair or replace damaged parts.

7. 

CHECK SYMPTOM

Check again. Refer to 

AT-59, "Cruise Test - Part 3"

 .

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 8.

8. 

CHECK TCM

1.

Check TCM input/output signals. Refer to 

AT-84, "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.

9. 

DETECT MALFUNCTIONING ITEM

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

AT-61,

"Symptom Chart"

  (Symptom No.50).

OK or NG

OK

>> GO TO 7.

NG

>> Repair or replace damaged parts.

Vehicle Does Not Decelerate By Engine Brake

NCS0010Z

SYMPTOM:

No engine brake is applied when the gear is shifted from the 2nd to 1st gear.

DIAGNOSTIC PROCEDURE

1. 

CHECK SELF-DIAGNOSTIC RESULTS

Perform self-diagnosis. Refer to 

AT-87, "SELF-DIAGNOSTIC RESULT MODE"

 , 

AT-97, "Diagnostic Procedure

without CONSULT-II"

 .

Is any malfunction detected by self-diagnostic results?

YES

>> Check the malfunctioning system. Refer to 

AT-87, "SELF-DIAGNOSTIC RESULT MODE"

 , 

AT-98,

"Judgement Self-diagnosis Code"

 .

NO

>> GO TO 2.