How To Proceed With Troubleshooting

WARNING: This page is about a different car, the 2004 Lexus ES 330. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

Use this procedure to troubleshoot the front power seat control system with memory function.
1. VEHICLE BROUGHT TO WORKSHOP
2. CUSTOMER PROBLEM ANALYSIS CHECK AND PROBLEM SYMPTOM CHECK (See CUSTOMER PROBLEM ANALYSIS CHECK )
3. PROBLEM SYMPTOM SIMULATION
  SYMPTOM DOES NOT OCCUR (GO TO STEP 4)
  
  SYMPTOM OCCURS (GO TO STEP 5 )
4. SYMPTOM SIMULATION (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE )
  GO TO STEP 6
5. PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )
6. OVERALL ANALYSIS AND TROUBLESHOOTING
  1. On-vehicle inspection (See ON-VEHICLE INSPECTION )
  2. Terminals of ECU (See TERMINALS OF ECU )
  3. Circuit inspection (See CIRCUIT DESCRIPTION - CIRCUIT DESCRIPTION )
7. ADJUSTMENT, REPAIR OR REPLACE
8. CONFIRMATION TEST
END