Infiniti M45 (Y34). Manual - part 95

TROUBLE DIAGNOSIS FOR SYMPTOMS

AT-265

D

E

F

G

H

I

J

K

L

M

A

B

AT

Vehicle Does Not Creep Backward in “R” Position

ACS001FV

SYMPTOM:

The vehicle does not creep in “R” position, or an extreme lack of acceleration is observed.

DIAGNOSTIC PROCEDURE

1. 

CHECK SELF-DIAGNOSTIC RESULTS

Execute self-diagnosis.
Do the self-diagnostic results indicate accelerator pedal position sensor, ATF pressure switch 6, high and low
reverse clutch solenoid valve, CAN communication line, PNP switch?

YES

>> Check the malfunctioning system. Refer to 

AT-152, "DTC P1705 THROTTLE POSITION SEN-

SOR"

 , 

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

 , 

AT-209, "DTC P1767 HIGH AND

LOW REVERSE CLUTCH SOLENOID VALVE"

 , 

AT-103, "DTC U1000 CAN COMMUNICATION

LINE"

 , 

AT-110, "DTC P0705 PARK/NEUTRAL POSITION SWITCH"

 .

NO

>> GO TO 2.

2. 

CHECK CONTROL LINKAGE

Check the control linkage.

●

Refer to 

AT-305, "Checking of A/T Position"

 .

OK or NG

OK

>> GO TO 3.

NG

>> Adjust control linkage. Refer to 

AT-305, "Adjustment of

A/T Position"

 .

3. 

CHECK A/T FLUID LEVEL

Check A/T fluid level. Refer to 

AT-14, "Checking A/T Fluid"

 .

OK or NG

OK

>> GO TO 4.

NG

>> Refill ATF.

4. 

CHECK STALL TEST

Check stall revolution with selector lever in “M” and “R” positions.
Refer to 

AT-52, "STALL TEST"

 .

OK or NG

OK

>> GO TO 5.

OK in “M” position, NG in “R” position>>1.Disassemble  A/T.  Refer

to 

AT-342, "DISASSEMBLY"

 .

2. Check the following items. If any items are damaged,

repair or replace damaged parts.

–

Reverse brake

NG in both “M” and “R” positions>>GO TO 7.

SCIA1612E

SAT638A

SAT493G

AT-266

TROUBLE DIAGNOSIS FOR SYMPTOMS

5. 

CHECK LINE PRESSURE

Check the line pressure with the engine idling. Refer to 

AT-53, "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.

6. 

DETECT MALFUNCTIONING ITEM

1.

Check control valve assembly. Refer to 

AT-312, "Control Valve Assembly"

 .

2.

Disassemble A/T. Refer to 

AT-342, "DISASSEMBLY"

 .

3.

Check the following items:

–

Oil pump assembly. Refer to 

AT-357, "Oil Pump"

 .

OK or NG

OK

>> GO TO 8.

NG

>> Repair or replace damaged parts.

7. 

DETECT MALFUNCTIONING ITEM

1.

Check control valve assembly. Refer to 

AT-312, "Control Valve Assembly"

 .

2.

Disassemble A/T. Refer to 

AT-342, "DISASSEMBLY"

 .

3.

Check the following items:

–

Oil pump assembly. Refer to 

AT-357, "Oil Pump"

 .

–

Power train system. Refer to 

AT-342, "DISASSEMBLY"

 .

–

Transmission case. Refer to 

AT-342, "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-312, "Control Valve Assembly"

 .

2.

Check A/T fluid condition. Refer to 

AT-52, "Fluid Condition

Check"

 .

OK or NG

OK

>> GO TO 9.

NG

>> GO TO 12.

SAT494G

SCIA5199E

TROUBLE DIAGNOSIS FOR SYMPTOMS

AT-267

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AT

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 10.

NG

>> Repair or replace damaged parts.

10. 

CHECK SYMPTOM

Check again. Refer to 

AT-56, "Check at Idle"

 .

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 11.

11. 

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.

12. 

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 10.

NG

>> Repair or replace damaged parts.

AT-268

TROUBLE DIAGNOSIS FOR SYMPTOMS

Vehicle Does Not Creep Forward in “D” Position

ACS001FW

SYMPTOM:

Vehicle does not creep forward when selecting “D” position.

DIAGNOSTIC PROCEDURE

1. 

CHECK SELF-DIAGNOSTIC RESULTS

Execute self-diagnosis.
Do the self-diagnostic results indicate accelerator pedal position sensor, CAN communication line, PNP
switch?

YES

>> Check the malfunctioning system. Refer to 

AT-152, "DTC P1705 THROTTLE POSITION SEN-

SOR"

 , 

AT-103, "DTC U1000 CAN COMMUNICATION LINE"

 , 

AT-110, "DTC P0705 PARK/NEU-

TRAL POSITION SWITCH"

 .

NO

>> GO TO 2.

2. 

CHECK CONTROL LINKAGE

Check the control linkage.

●

Refer to 

AT-305, "Checking of A/T Position"

 .

OK or NG

OK

>> GO TO 3.

NG

>> Adjust control linkage. Refer to 

AT-305, "Adjustment of

A/T Position"

 .

3. 

CHECK A/T FLUID LEVEL

Check A/T fluid level. Refer to 

AT-14, "Checking A/T Fluid"

 .

OK or NG

OK

>> GO TO 4.

NG

>> Refill ATF.

4. 

CHECK STALL TEST

Check stall revolution with selector lever in “D” position. Refer to 

AT-

52, "STALL TEST"

 .

OK or NG

OK

>> GO TO 5.

NG

>> GO TO 7.

SCIA1612E

SAT638A

SAT493G