How To Proceed With Troubleshooting

VEHICLE BROUGHT TO WORKSHOP
1. GO TO NEXT STEP
CUSTOMER PROBLEM ANALYSIS CHECK AND PROBLEM SYMPTOM CONFIRMATION
1. GO TO NEXT STEP
INSPECT COMMUNICATION FUNCTION OF LARGE-SCALE BODY MULTIPLEX COMMUNICATION SYSTEM (BEAN)
1. Check there is no abnormality in the communication system by inspecting the communication function of the body multiplex communication system with LEXUS hand-held tester.
  1. (ECU unconnected, communication line abnormal) Without code outputs, proceed to "A".
  2. (ECU unconnected, communication line abnormal) With code outputs, proceed to "B".
1. B: GO TO MULTIPLEX COMMUNICATION SYSTEM (See DIAGNOSTICS TROUBLE CODE CHART )
2. A: GO TO NEXT STEP.
PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )
1. Without an applicable problem symptom table, proceed to "A".
2. With an applicable problem symptom table, proceed to "B".
1. B: GO TO STEP 7
2. A: GO TO NEXT STEP.
ACCORDING TO PROBLEM SYMPTOM, PERFORM TROUBLESHOOTING
1. PRE-CHECK (See PRE-CHECK )
  1. Inspection with LEXUS hand-held tester (ECU data monitor)
  2. Inspection with LEXUS hand-held tester (Active test)
2. TERMINAL OF ECU (See TERMINALS OF ECU )
3. INSPECTION (See MIRROR SWITCH CIRCUIT (FLOW CHART 1) )
ADJUSTMENT, REPAIR OR REPLACE
1. GO TO NEXT STEP
CONFIRMATION TEST
1. GO TO NEXT STEP
2. END