Infiniti I30 (A33). Manual — part 58

6. Vehicle Does Not Creep Backward In R
Position

=NHAT0093

SYMPTOM:
Vehicle does not creep backward when selecting R position.

1

CHECK A/T FLUID LEVEL

Check A/T fluid level again.

SAT638A

OK or NG

OK

©

GO TO 2.

NG

©

Refill ATF.

2

CHECK STALL REVOLUTION

Check stall revolution with selector lever in 1 and R positions.

SAT493G

OK or NG

OK

©

GO TO 5.

OK in 1 position, NG in
R position

©

GO TO 3.

NG in both 1 and R
positions

©

GO TO 4.

GI

MA

EM

LC

EC

FE

AX

SU

BR

ST

RS

BT

HA

SC

EL

IDX

TROUBLE DIAGNOSES FOR SYMPTOMS

6. Vehicle Does Not Creep Backward In R Position

AT-229

3

DETECT MALFUNCTIONING ITEM

1. Remove control valve assembly. Refer to “ON-VEHICLE SERVICE”, AT-280.
2. Check the following items:

I

Valves to control line pressure (Pressure regulator valve, pressure modifier valve, pilot valve and pilot filter)

I

Line pressure solenoid valve

3. Disassemble A/T.
4. Check the following items:

I

Oil pump assembly

I

Torque converter

I

Reverse clutch assembly

I

High clutch assembly

OK or NG

OK

©

GO TO 5.

NG

©

Repair or replace damaged parts.

4

DETECT MALFUNCTIONING ITEM

1. Remove control valve assembly. Refer to “ON-VEHICLE SERVICE”, AT-280.
2. Check the following items:

I

Valves to control line pressure (Pressure regulator valve, pressure modifier valve, pilot valve and pilot filter)

I

Line pressure solenoid valve

3. Disassemble A/T.
4. Check the following items:

I

Oil pump assembly

I

Torque converter

I

Reverse clutch assembly

I

High clutch assembly

I

Low & reverse brake assembly

I

Low one-way clutch

OK or NG

OK

©

GO TO 5.

NG

©

Repair or replace damaged parts.

5

CHECK LINE PRESSURE

Check line pressure at idle with selector lever in R position. Refer to “LINE PRESSURE TEST”, AT-65.

SAT494G

OK or NG

OK

©

GO TO 7.

NG

©

GO TO 6.

TROUBLE DIAGNOSES FOR SYMPTOMS

6. Vehicle Does Not Creep Backward In R Position (Cont’d)

AT-230

6

DETECT MALFUNCTIONING ITEM

1. Remove control valve assembly. Refer to “ON-VEHICLE SERVICE”, AT-280.
2. Check the following items:

I

Valves to control line pressure (Pressure regulator valve, pressure modifier valve, pilot valve and pilot filter)

I

Line pressure solenoid valve

3. Disassemble A/T.
4. Check the following item:

I

Oil pump assembly

OK or NG

OK

©

GO TO 7.

NG

©

Repair or replace damaged parts.

7

CHECK A/T FLUID CONDITION

1. Remove oil pan.
2. Check A/T fluid condition.

SAT171B

OK or NG

OK

©

GO TO 9.

NG

©

GO TO 8.

8

DETECT MALFUNCTIONING ITEM

1. Remove control valve assembly. Refer to “ON-VEHICLE SERVICE”, AT-280.
2. Check the following items:

I

Valves to control line pressure (Pressure regulator valve, pressure modifier valve, pilot valve and pilot filter)

I

Line pressure solenoid valve

3. Disassemble A/T.
4. Check the following items:

I

Oil pump assembly

I

Torque converter

I

Reverse clutch assembly

I

High clutch assembly

I

Low & reverse brake assembly

I

Low one-way clutch

OK or NG

OK

©

GO TO 9.

NG

©

Repair or replace damaged parts.

GI

MA

EM

LC

EC

FE

AX

SU

BR

ST

RS

BT

HA

SC

EL

IDX

TROUBLE DIAGNOSES FOR SYMPTOMS

6. Vehicle Does Not Creep Backward In R Position (Cont’d)

AT-231

9

CHECK SYMPTOM

Check again.

OK or NG

OK

©

INSPECTION END

NG

©

GO TO 10.

10

CHECK 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.

TROUBLE DIAGNOSES FOR SYMPTOMS

6. Vehicle Does Not Creep Backward In R Position (Cont’d)

AT-232