Infiniti F50. Instruction - page 90

TROUBLE DIAGNOSIS FOR SYMPTOMS

AT-245

D

E

F

G

H

I

J

K

L

M

A

B

AT

Vehicle Does Not Creep Backward In “R” Position

ECS0089C

SYMPTOM:

The vehicle does not creep in the “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-144, "DTC P1705 THROTTLE POSITION SEN-

SOR"

,

AT-231, "DTC P1846 ATF PRESSURE SWITCH 6"

,

AT-197, "DTC P1767 HIGH AND

LOW REVERSE CLUTCH SOLENOID VALVE"

,

AT-99, "DTC U1000 CAN COMMUNICATION

LINE"

,

AT-105, "DTC P0705 PARK/NEUTRAL POSITION SWITCH"

.

No

>> GO TO 2.

2.

CHECK CONTROL LINKAGE

Check the control linkage.

Refer to

AT-282, "Checking of A/T Position"

.

OK or NG

OK

>> GO TO 3.

NG

>> Adjust control linkage. Refer to

AT-282, "Adjustment of

A/T Position"

.

3.

CHECK A/T FLUID LEVEL

Check A/T fluid level again. 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 “1” and “R” positions.
Refer to

AT-51, "STALL TEST"

.

OK or NG

OK

>> GO TO 5.

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

to

AT-307, "DISASSEMBLY"

.

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

repair or replace damaged parts.

Reverse brake

NG in both “1” and “R” positions>>GO TO 7.

SCIA1612E

SAT638A

SAT493G

AT-246

TROUBLE DIAGNOSIS FOR SYMPTOMS

5.

CHECK LINE PRESSURE

Check the line pressure with the engine idling. Refer to

AT-52, "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.

Control valve assembly. Refer to

AT-289, "Control Valve Assembly"

.

2.

Disassemble A/T. Refer to

AT-307, "DISASSEMBLY"

.

3.

Check the following items:

Oil pump assembly. Refer to

AT-321, "Oil Pump"

.

OK or NG

OK

>> GO TO 8.

NG

>> Repair or replace damaged parts.

7.

DETECT MALFUNCTIONING ITEM

1.

Control valve assembly. Refer to

AT-289, "Control Valve Assembly"

.

2.

Disassemble A/T. Refer to

AT-307, "DISASSEMBLY"

.

3.

Check the following items:

Oil pump assembly. Refer to

AT-321, "Oil Pump"

.

Power train system. Refer to

AT-307, "DISASSEMBLY"

.

Transmission case. Refer to

AT-307, "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-289, "Control Valve Assembly"

.

2.

Check A/T fluid condition.

OK or NG

OK

>> GO TO 9.

NG

>> GO TO 12.

SAT494G

SAT171B

TROUBLE DIAGNOSIS FOR SYMPTOMS

AT-247

D

E

F

G

H

I

J

K

L

M

A

B

AT

9.

DETECT MALFUNCTIONING ITEM

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

AT-60,

"Symptom Chart"

.

OK or NG

OK

>> GO TO 10.

NG

>> Repair or replace damaged parts.

10.

CHECK SYMPTOM

Check again.

OK or NG

OK

>> INSPECTION END

NG

>> GO TO 11.

11.

PERFORM TCM INSPECTION

1.

Perform TCM input/output signal inspection.

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-60,

"Symptom Chart"

.

OK or NG

OK

>> GO TO 10.

NG

>> Repair or replace damaged parts.

Vehicle Does Not Creep Forward In “D” Position

ECS0089D

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-144, "DTC P1705 THROTTLE POSITION SEN-

SOR"

,

AT-99, "DTC U1000 CAN COMMUNICATION LINE"

,

AT-105, "DTC P0705 PARK/NEU-

TRAL POSITION SWITCH"

.

No

>> GO TO 2.

AT-248

TROUBLE DIAGNOSIS FOR SYMPTOMS

2.

CHECK CONTROL LINKAGE

Check the control linkage.

Refer to

AT-282, "Checking of A/T Position"

.

OK or NG

OK

>> GO TO 3.

NG

>> Adjust control linkage. Refer to

AT-282, "Adjustment of

A/T Position"

.

3.

CHECK A/T FLUID LEVEL

Check A/T fluid level again. 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-

51, "STALL TEST"

.

OK or NG

OK

>> GO TO 5.

NG

>> GO TO 7.

5.

CHECK LINE PRESSURE

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

AT-52, "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.

SCIA1612E

SAT638A

SAT493G

SAT494G

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