Infiniti M45 (Y34). Manual - part 93

TROUBLE DIAGNOSIS FOR SYMPTOMS

AT-257

D

E

F

G

H

I

J

K

L

M

A

B

AT

3. 

DETECT MALFUNCTIONING ITEM

Check the following items:

●

Harness for short or open between battery and TCM connector terminal 9

●

Harness for short or open between ignition switch and TCM connector terminals 33 and 42

●

10A fuse [No. 32 or 35, located in the fuse block (J/B)]

●

Ignition switch, Refer to 

PG-2, "POWER SUPPLY ROUTING"

 .

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace damaged parts.

4. 

CHECK TCM GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect the TCM connector.

3.

Check continuity between terminals 5 (B), 14 (B), 24 (B), 46 (B)
and ground. Refer to 

AT-141, "Wiring Diagram — AT —

POWER"

 .

4.

If OK, check the harness for short-circuit to ground or the power
source.

OK or NG

OK

>> GO TO 5.

NG

>> Repair the short-circuit in the harness or connector to

ground or the power source.

5. 

CHECK A/T CHECK INDICATOR LAMP CIRCUIT

1.

Turn ignition switch OFF.

2.

Check the combination meter.
Refer to 

DI-6, "COMBINATION METERS"

 .

OK or NG

OK

>> GO TO 6.

NG

>> Replace the combination meter. Refer to 

DI-19, "Removal and Installation of Combination Meter"

 .

6. 

CHECK SYMPTOM

Check again. Refer to 

AT-56, "Check Before Engine is Started"

 .

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 7.

7. 

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.

Continuity should exist.

SCIA1161E

AT-258

TROUBLE DIAGNOSIS FOR SYMPTOMS

Engine Cannot Be Started In “P” or “N” Position

ACS001FR

SYMPTOM:

●

Engine cannot be started with selector lever in “P” or “N” position.

●

Engine can be started with selector lever in “D”or “R” position.

DIAGNOSTIC PROCEDURE

1. 

CHECK PNP SWITCH CIRCUIT

Execute self-diagnosis.

Do the self-diagnostic results indicate PNP switch?

YES

>> Check the malfunctioning system. Refer to 

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 STARTING SYSTEM

Check starting system. Refer to 

SC-9, "STARTING SYSTEM"

 .

OK or NG

OK

>> INSPECTION END

NG

>> Repair or replace damaged parts.

SCIA1612E

TROUBLE DIAGNOSIS FOR SYMPTOMS

AT-259

D

E

F

G

H

I

J

K

L

M

A

B

AT

In “P” Position, Vehicle Moves When Pushed

ACS001FS

SYMPTOM:

Even though the selector lever is set in “P” position, the parking mechanism is not actuated, allowing
the vehicle to be moved when it is pushed.

DIAGNOSTIC PROCEDURE

1. 

CHECK PNP SWITCH CIRCUIT

Execute self-diagnosis.

Do the self-diagnostic results indicate PNP switch?

YES

>> Check the malfunctioning system. Refer to 

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 PARKING COMPONENTS

Check parking components. Refer to 

AT-325, "Parking Components"

 .

OK or NG

OK

>> INSPECTION END

NG

>> Repair or replace damaged parts.

SCIA1612E

AT-260

TROUBLE DIAGNOSIS FOR SYMPTOMS

In “N” Position, Vehicle Moves

ACS001FT

SYMPTOM:

Vehicle moves forward or backward when selecting “N” position.

DIAGNOSTIC PROCEDURE

1. 

CHECK PNP SWITCH CIRCUIT

Execute self-diagnosis.
Do the self-diagnostic results indicate PNP switch?

YES

>> Check the malfunctioning system. Refer to 

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 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 5.

NG

>> Check the malfunction items. If any items are damaged,

repair or replace damaged parts. Refer to 

AT-63, "Symp-

tom Chart"

 .

SCIA1612E

SAT638A

SCIA5199E