A/T Does Not Perform Lock-Up

TROUBLE DIAGNOSIS FOR SYMPTOMS


A/T Does Not Perform Lock-up


SYMPTOM:
A/T does not perform lock-up at the specified speed on "Cruise Test -- Part 1".

DIAGNOSTIC PROCEDURE
1.CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis. CONSULT-III Function (A/T) or Diagnosis Procedure Without CONSULT-III .
Is any malfunction detected by self-diagnostic results?
YES - Check the malfunctioning system. CONSULT-III Function (A/T) or Diagnosis Procedure Without CONSULT-III .
NO - GO TO 2.
2.CHECK ACCELERATOR PEDAL POSITION SENSOR
Check accelerator pedal position sensor. P2138 (HR16DE), P2138 (MR18DE).
OK or NG
OK - GO TO 3.
NG - Repair or replace accelerator pedal position sensor.
3.DETECT MALFUNCTIONING ITEM
1. Remove control valve. Service and Repair .
2. Check following items:
- Torque converter clutch control valve
- Torque converter clutch solenoid valve
- Torque converter relief valve
- Pilot valve
- Pilot filter
3. Disassemble A/T. Disassembly .
4. Check the following items:
- Torque converter. Disassembly .
OK or NG
OK - GO TO 4.
NG - Repair or replace damaged parts.
4.CHECK SYMPTOM
Check again. Cruise Test - Part 1 .
OK or NG
OK - INSPECTION END
NG - GO TO 5.
5.CHECK TCM
1. Check TCM input/output signals. TCM Terminal And Reference Value .
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.