Infiniti Q45. Manual — part 68

TROUBLE DIAGNOSIS FOR SYMPTOMS

AT-185

D

E

F

G

H

I

J

K

L

M

A

B

AT

In “N” Position, Vehicle Moves

NCS0010H

SYMPTOM:

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

DIAGNOSTIC PROCEDURE

1.

CHECK PNP SWITCH CIRCUIT

Perform self-diagnosis. Refer to

AT-87, "SELF-DIAGNOSTIC RESULT MODE"

,

AT-97, "TCM SELF-DIAG-

NOSTIC PROCEDURE (NO TOOLS)"

.

Do the self-diagnostic results indicate PNP switch?

YES

>> Check the malfunctioning system. Refer to

AT-107, "DTC P0705 PARK/NEUTRAL POSITION

SWITCH"

.

NO

>> GO TO 2.

2.

CHECK CONTROL LINKAGE

Check the control linkage. Refer to

AT-218, "Checking of A/T Position"

.

OK or NG

OK

>> GO TO 3.

NG

>> Adjust control linkage. Refer to

AT-218, "Adjustment of A/T Position"

.

3.

CHECK A/T FLUID LEVEL

Check A/T fluid level. Refer to

AT-13, "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-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 5.

NG

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

AT-61, "Symptom Chart"

(Symptom No.67).

5.

CHECK SYMPTOM

Check again. Refer to

AT-55, "Check at Idle"

.

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.

AT-186

TROUBLE DIAGNOSIS FOR SYMPTOMS

Large Shock (“N” to “D” Position)

NCS0010I

SYMPTOM:

A noticeable shock occurs when the selector lever is shifted from “N” to “D” position.

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.

ENGINE IDLE SPEED

Check the engine idle speed. Refer to

EC-76, "Idle Speed and Ignition Timing Check"

.

OK or NG

OK

>> GO TO 3.

NG

>> Adjust engine idle speed. Refer to

EC-76, "Idle Speed and Ignition Timing Check"

.

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 A/T FLUID LEVEL

Check the A/T fluid level. Refer to

AT-13, "Checking A/T Fluid"

.

OK or NG

OK

>> GO TO 5.

NG

>> Refill ATF.

5.

CHECK LINE PRESSURE

Check line pressure at idle with selector lever in “D” position. 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 with TCM. Refer to

AT-225, "Control Valve with TCM and A/T Fluid Temperature Sen-

sor 2"

.

2.

Disassemble A/T. Refer to

AT-261, "DISASSEMBLY"

.

3.

Check the following.

–

Oil pump assembly. Refer to

AT-277, "Oil Pump"

.

OK or NG

OK

>> GO TO 8.

NG

>> Repair or replace damaged parts.

TROUBLE DIAGNOSIS FOR SYMPTOMS

AT-187

D

E

F

G

H

I

J

K

L

M

A

B

AT

7.

DETECT MALFUNCTIONING ITEM

1.

Check control valve with TCM. Refer to

AT-225, "Control Valve with TCM and A/T Fluid Temperature Sen-

sor 2"

.

2.

Disassemble A/T. Refer to

AT-261, "DISASSEMBLY"

.

3.

Check the following.

–

Oil pump assembly. Refer to

AT-277, "Oil Pump"

.

–

Power train system. Refer to

AT-261, "DISASSEMBLY"

.

–

Transmission case. Refer to

AT-261, "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-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 10.

NG

>> GO TO 9.

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.1).

OK or NG

OK

>> GO TO 10.

NG

>> Repair or replace damaged parts.

10.

CHECK SYMPTOM

Check again. Refer to

AT-55, "Check at Idle"

.

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 11.

11.

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.

AT-188

TROUBLE DIAGNOSIS FOR SYMPTOMS

Vehicle Does Not Creep Backward In “R” Position

NCS0010J

SYMPTOM:

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

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-diagnosis 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 CONTROL LINKAGE

Check the control linkage. Refer to

AT-218, "Checking of A/T Position"

.

OK or NG

OK

>> GO TO 3.

NG

>> Adjust control linkage. Refer to

AT-218, "Adjustment of A/T Position"

.

3.

CHECK A/T FLUID LEVEL

Check A/T fluid level. Refer to

AT-13, "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-51, "STALL TEST"

.

OK or NG

OK

>> GO TO 6.

OK in “M” position, NG in “R” position>>GO TO 5
NG in both “M” and “R” positions>>GO TO 8.

5.

DETECT MALFUNCTIONING ITEM

1.

Disassemble A/T. Refer to

AT-261, "DISASSEMBLY"

.

2.

Check the following.

–

Reverse brake. Refer to

AT-261, "DISASSEMBLY"

.

OK or NG

OK

>> GO TO 9.

NG

>> Repair or replace damaged parts.

6.

CHECK LINE PRESSURE

Check the line pressure with the engine idling. Refer to

AT-53, "LINE PRESSURE TEST"

.

OK or NG

OK

>> GO TO 9.

NG - 1 >> Line pressure high. GO TO 7.
NG - 2 >> Line pressure low. GO TO 8.