A/T Does Not Perform Lock-Up
A/T Does Not Lock-upSYMPTOM: A/T does not lock-up at the specified speed.
DIAGNOSTIC PROCEDURE
1. CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis. Refer to AT-92, SELF-DIAGNOSTIC RESULT MODE. Self-Diagnostic Result Mode
Refer to AT-102, "TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)". TCM Self-Diagnostic Procedure (No Tools)
Is any malfunction detected by self-diagnostic results?
YES >> Check the malfunctioning system.
NO >> GO TO 2.
2. CHECK A/T FLUID LEVEL
Check A/T fluid level.
OK or NG
OK >> GO TO 3.
NG >> Refill ATF.
3. CHECK LINE PRESSURE
Check line pressure at the engine stall point.
OK or NG
OK >> GO TO 6.
NG-1 >> Line pressure high: GO TO 4.
NG-2 >> Line pressure low: GO TO 5.
4. DETECT MALFUNCTIONING ITEM
1. Check control valve with TCM.
2. Disassemble A/T.
3. Check the following.
- Oil pump assembly.
OK or NG
OK >> GO TO 6.
NG >> Repair or replace damaged parts.
5. DETECT MALFUNCTIONING ITEM
1. Check control valve with TCM.
2. Disassemble A/T.
3. Check the following.
- Oil pump assembly.
- Power train system.
- Transmission case.
OK or NG
OK >> GO TO 6.
NG >> Repair or replace damaged parts.
6. CHECK A/T FLUID CONDITION
1. Remove oil pan.
2. Check A/T fluid condition.
OK or NG
OK >> GO TO 7.
NG >> GO TO 10.
7. DETECT MALFUNCTIONING ITEM
Check the malfunction items. If any items are damaged, repair or replace damaged parts.
OK or NG
OK >> GO TO 8.
NG >> Repair or replace damaged parts.
8. CHECK SYMPTOM
Check again.
OK or NG
OK >> INSPECTION END
NG >> GO TO 9.
9. CHECK TCM
1. Check TCM input/output signals.
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.
10. DETECT MALFUNCTIONING ITEM
Check the malfunction items. If any items are damaged, repair or replace damaged parts.
OK or NG
OK >> GO TO 8.
NG >> Repair or replace damaged parts.