Infiniti I30 (A33). Manual - part 63

4

CHECK SYMPTOM

Check again.

OK or NG

OK

©

INSPECTION END

NG

©

GO TO 5.

5

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.

GI

MA

EM

LC

EC

FE

AX

SU

BR

ST

RS

BT

HA

SC

EL

IDX

TROUBLE DIAGNOSES FOR SYMPTOMS

12. A/T Does Not Perform Lock-up (Cont’d)

AT-249

13. A/T Does Not Hold Lock-up Condition

=NHAT0100

SYMPTOM:
A/T does not hold lock-up condition for more than 30 seconds.

1

CHECK SELF-DIAGNOSTIC RESULTS

Does self-diagnosis show damage to engine speed signal circuit after cruise test?

SAT347H

Yes or No

Yes

©

Check engine speed signal circuit. Refer to “DTC P0725”, AT-119.

No

©

GO TO 2.

2

CHECK A/T FLUID CONDITION

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

SAT171B

OK or NG

OK

©

GO TO 4.

NG

©

GO TO 3.

3

DETECT MALFUNCTIONING ITEM

1. Remove control valve assembly. Refer to AT-280.
2. Check the following items:

I

Torque converter clutch control valve

I

Pilot valve

I

Pilot filter

3. Disassemble A/T.
4. Check torque converter and oil pump assembly.

OK or NG

OK

©

GO TO 5.

NG

©

Repair or replace damaged parts.

TROUBLE DIAGNOSES FOR SYMPTOMS

13. A/T Does Not Hold Lock-up Condition

AT-250

4

DETECT MALFUNCTIONING ITEM

1. Remove control valve assembly. Refer to AT-280.
2. Check the following items:

I

Torque converter clutch control valve

I

Pilot valve

I

Pilot filter

OK or NG

OK

©

GO TO 5.

NG

©

Repair or replace damaged parts.

5

CHECK SYMPTOM

Check again.

OK or NG

OK

©

INSPECTION END

NG

©

GO TO 6.

6

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.

GI

MA

EM

LC

EC

FE

AX

SU

BR

ST

RS

BT

HA

SC

EL

IDX

TROUBLE DIAGNOSES FOR SYMPTOMS

13. A/T Does Not Hold Lock-up Condition (Cont’d)

AT-251

14. Lock-up Is Not Released

=NHAT0101

SYMPTOM:
Lock-up is not released when accelerator pedal is released.

1

CHECK THROTTLE POSITION SWITCH CIRCUIT

With CONSULT-II

Does “TCM INPUT SIGNALS” in “DATA MONITOR” show damage to closed throttle position switch circuit?

Without CONSULT-II

Does self-diagnosis show damage to closed throttle position switch circuit?

SAT367J

Yes or No

Yes

©

Check closed throttle position switch circuit. Refer to “DTC P0705”, AT-102.

No

©

GO TO 2.

2

CHECK SYMPTOM

Check again.

OK or NG

OK

©

INSPECTION END

NG

©

GO TO 3.

3

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

14. Lock-up Is Not Released

AT-252