Infiniti Q45. Manual - part 73

TROUBLE DIAGNOSIS FOR SYMPTOMS

AT-205

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Lock-up Is Not Released

NCS0010S

SYMPTOM:

The lock-up condition cannot be cancelled even after releasing the accelerator pedal.

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 SYMPTOM

Check again. Refer to 

AT-57, "Cruise Test - Part 1"

 .

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 3.

3. 

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.

Engine Speed Does Not Return to Idle

NCS0010T

SYMPTOM:

When a shift-down is performed, the engine speed does not smoothly return to the idling speed.

DIAGNOSTIC PROCEDURE

1. 

CHECK A/T FLUID LEVEL

Check A/T fluid level. Refer to 

AT-13, "Checking A/T Fluid"

 .

OK or NG

OK

>> GO TO 2.

NG

>> Refill ATF.

2. 

CHECK SELF-DIAGNOSTIC RESULTS

Perform self-diagnosis. Refer to 

AT-87, "SELF-DIAGNOSTIC RESULT MODE"

 , 

AT-97, "TCM SELF-DIAG-

NOSTIC PROCEDURE (NO TOOLS)"

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 3.

AT-206

TROUBLE DIAGNOSIS FOR SYMPTOMS

3. 

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 4.

NG

>> GO TO 7.

4. 

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.72).

OK or NG

OK

>> GO TO 5.

NG

>> Repair or replace damaged parts.

5. 

CHECK SYMPTOM

Check again. Refer to 

AT-57, "Cruise Test - Part 1"

 .

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 6.

6. 

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.

7. 

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.72).

OK or NG

OK

>> GO TO 5.

NG

>> Repair or replace damaged parts.

Cannot Be Changed to Manual Mode

NCS0010U

SYMPTOM:

Does not change to manual mode when manual shift gate is used.

DIAGNOSTIC PROCEDURE

1. 

CHECK MANUAL MODE SWITCH

Check the manual mode switch. Refer to 

AT-161, "DTC P1815 MANUAL MODE SWITCH"

 .

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace damaged parts.

TROUBLE DIAGNOSIS FOR SYMPTOMS

AT-207

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2. 

CHECK SELF-DIAGNOSTIC RESULTS

Perform self-diagnosis. Refer to 

AT-87, "SELF-DIAGNOSTIC RESULT MODE"

 , 

AT-97, "TCM SELF-DIAG-

NOSTIC PROCEDURE (NO TOOLS)"

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

>> INSPECTION END

A/T Does Not Shift: 5th Gear 

→

 4th Gear

NCS0010V

SYMPTOM:

When shifted from M5 to M4 position in manual mode, does not downshift from 5th to 4th 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.

AT-208

TROUBLE DIAGNOSIS FOR SYMPTOMS

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.47).

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.47).

OK or NG

OK

>> GO TO 7.

NG

>> Repair or replace damaged parts.

A/T Does Not Shift: 4th Gear 

→

 3rd Gear

NCS0010W

SYMPTOM:

When shifted from M4 to M3 position in manual mode, does not downshift from 4th to 3rd 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.