Infiniti M45 (Y34). Manual - part 103

TROUBLE DIAGNOSIS FOR SYMPTOMS

AT-297

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5. 

CHECK A/T FLUID CONDITION

1.

Remove oil pan. Refer to 

AT-312, "Control Valve Assembly"

 .

2.

Check A/T fluid condition. Refer to 

AT-52, "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-63,

"Symptom Chart"

 .

OK or NG

OK

>> GO TO 7.

NG

>> Repair or replace damaged parts.

7. 

CHECK SYMPTOM

Check again. Refer to 

AT-60, "Cruise Test - Part 3"

 .

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 8.

8. 

CHECK TCM

1.

Check TCM input/output signal. Refer to 

AT-86, "TCM Input/Output Signal Reference Values"

 .

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.

9. 

DETECT MALFUNCTIONING ITEM

●

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

AT-63,

"Symptom Chart"

 .

OK or NG

OK

>> GO TO 7.

NG

>> Repair or replace damaged parts.

SCIA5199E

AT-298

TROUBLE DIAGNOSIS FOR SYMPTOMS

A/T Does Not Shift: 3rd Gear 

→

 2nd Gear

ACS001G8

SYMPTOM:

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

DIAGNOSTIC PROCEDURE

1. 

CHECK SELF-DIAGNOSTIC RESULTS

Execute self-diagnosis.
Do the self-diagnostic results indicate PNP switch, ATF pressure switch 6?

YES

>> Check the malfunctioning system. Refer to 

AT-110, "DTC P0705 PARK/NEUTRAL POSITION

SWITCH"

 , 

AT-246, "DTC P1846 ATF PRESSURE SWITCH 6"

 .

NO

>> GO TO 2.

2. 

CHECK A/T FLUID LEVEL

Check A/T fluid level. Refer to 

AT-14, "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-305, "Checking of A/T Position"

 .

OK or NG

OK

>> GO TO 4.

NG

>> Adjust control linkage. Refer to 

AT-305, "Adjustment of

A/T Position"

 .

4. 

MANUAL MODE SWITCH

Check the manual mode switch. Refer to 

AT-230, "DTC P1815 MANUAL MODE SWITCH"

 .

OK or NG

OK

>> GO TO 5.

NG

>> Repair or replace damaged parts.

SAT638A

SCIA1612E

TROUBLE DIAGNOSIS FOR SYMPTOMS

AT-299

D

E

F

G

H

I

J

K

L

M

A

B

AT

5. 

CHECK A/T FLUID CONDITION

1.

Remove oil pan. Refer to 

AT-312, "Control Valve Assembly"

 .

2.

Check A/T fluid condition. Refer to 

AT-52, "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-63,

"Symptom Chart"

 .

OK or NG

OK

>> GO TO 7.

NG

>> Repair or replace damaged parts.

7. 

CHECK SYMPTOM

Check again. Refer to 

AT-60, "Cruise Test - Part 3"

 .

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 8.

8. 

CHECK TCM

1.

Check TCM input/output signal. Refer to 

AT-86, "TCM Input/Output Signal Reference Values"

 .

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.

9. 

DETECT MALFUNCTIONING ITEM

●

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

AT-63,

"Symptom Chart"

 .

OK or NG

OK

>> GO TO 7.

NG

>> Repair or replace damaged parts.

SCIA5199E

AT-300

TROUBLE DIAGNOSIS FOR SYMPTOMS

A/T Does Not Shift: 2nd Gear 

→

 1st Gear

ACS001G9

SYMPTOM:

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

DIAGNOSTIC PROCEDURE

1. 

CHECK SELF-DIAGNOSTIC RESULTS

Execute self-diagnosis.
Do the self-diagnostic results indicate PNP switch, ATF pressure switch 5?

YES

>> Check the malfunctioning system. Refer to 

AT-110, "DTC P0705 PARK/NEUTRAL POSITION

SWITCH"

 , 

AT-242, "DTC P1845 ATF PRESSURE SWITCH 5"

 .

NO

>> GO TO 2.

2. 

CHECK A/T FLUID LEVEL

Check A/T fluid level. Refer to 

AT-14, "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-305, "Checking of A/T Position"

 .

OK or NG

OK

>> GO TO 4.

NG

>> Adjust control linkage. Refer to 

AT-305, "Adjustment of

A/T Position"

 .

4. 

MANUAL MODE SWITCH

Check the manual mode switch. Refer to 

AT-230, "DTC P1815 MANUAL MODE SWITCH"

 .

OK or NG

OK

>> GO TO 5.

NG

>> Repair or replace damaged parts.

SAT638A

SCIA1612E