How To Proceed With Troubleshooting

VEHICLE BROUGHT TO WORKSHOP
1. GO TO NEXT STEP
CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK (See CUSTOMER PROBLEM ANALYSIS CHECK )
1. GO TO NEXT STEP
INSPECT COMMUNICATION FUNCTION OF LARGE-SCALE BODY MULTIPLEX COMMUNICATION SYSTEM (BEAN)
1. Check that there is no abnormality in the communication system by inspecting the communication function of the body multiplex communication system with the hand-held tester.
  1. (ECU unconnected, communication line abnormal) Without code output, proceed to A
  2. (ECU unconnected, communication line abnormal) With code output, proceed to B
1. B: GO TO MULTIPLEX COMMUNICATION SECTION
2. A: GO TO NEXT STEP
DIAGNOSIS TROUBLE CODE CHECK (See DIAGNOSTIC TROUBLE CODE CHART )
1. Check diagnosis code.
  1. Without code output, proceed to A
  2. With code output, proceed to B
1. B: GO TO STEP 7
2. A: GO TO NEXT STEP
SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )
1. Without applicable symptoms, proceed to A
2. With applicable symptoms, proceed to B
1. B: GO TO STEP 7
2. A: GO TO NEXT STEP
PERFORM TROUBLESHOOTING BY FOLLOWING METHOD, DEPENDING ON MALFUNCTION SYMPTOM
1. PRE-CHECK
2. TERMINALS OF ECU
1. GO TO NEXT STEP
ADJUST, REPAIR OR REPLACEMENT
1. GO TO NEXT STEP
2. END