Infiniti M45 (Y34). Manual - part 102

TROUBLE DIAGNOSIS FOR SYMPTOMS

AT-293

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Cannot Be Changed to Manual Mode

ACS001MB

SYMPTOM:

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

DIAGNOSTIC PROCEDURE

1. 

MANUAL MODE SWITCH

Check the manual mode switch. Refer to 

AT-230, "DTC P1815 MANUAL MODE SWITCH"

 .

OK or NG

OK

>> GO TO 2.

NG

>> Repair or replace damaged parts.

2. 

CHECK SELF-DIAGNOSTIC RESULTS

Execute self-diagnosis.

Do the self-diagnostic results indicate turbine revolution sensor?

YES

>> Check the malfunctioning system. Refer to 

AT-160, "DTC P1716 TURBINE REVOLUTION SEN-

SOR"

 .

NO

>> INSPECTION END

AT-294

TROUBLE DIAGNOSIS FOR SYMPTOMS

A/T Does Not Shift: 5th Gear 

→

 4th Gear

ACS001G6

SYMPTOM:

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

DIAGNOSTIC PROCEDURE

1. 

CHECK SELF-DIAGNOSTIC RESULTS

Execute self-diagnosis.
Do the self-diagnostic results indicate PNP switch, ATF pressure switch 1?

YES

>> Check the malfunctioning system. Refer to 

AT-110, "DTC P0705 PARK/NEUTRAL POSITION

SWITCH"

 , 

AT-234, "DTC P1841 ATF PRESSURE SWITCH 1"

 .

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-295

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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 6.

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-296

TROUBLE DIAGNOSIS FOR SYMPTOMS

A/T Does Not Shift: 4th Gear 

→

 3rd Gear

ACS001G7

SYMPTOM:

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

DIAGNOSTIC PROCEDURE

1. 

CHECK SELF-DIAGNOSTIC RESULTS

Execute self-diagnosis.
Do the self-diagnostic results indicate PNP switch, ATF pressure switch 1, ATF pressure switch 3?

YES

>> Check the malfunctioning system. Refer to 

AT-110, "DTC P0705 PARK/NEUTRAL POSITION

SWITCH"

 , 

AT-234, "DTC P1841 ATF PRESSURE SWITCH 1"

 , 

AT-238, "DTC P1843 ATF PRES-

SURE SWITCH 3"

 .

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