How To Proceed With Troubleshooting

VEHICLE BROUGHT TO WORKSHOP
(See CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK )
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. A: Go to step 4 .
2. B: Go to MULTIPLEX COMMUNICATION SYSTEM (See HOW TO PROCEED WITH TROUBLESHOOTING )
See DIAGNOSTIC TROUBLE CODE CHECK .
1. Check a DTC and note it if a code is output.
2. Delete the DTC.
3. Check if the DTC will be output once again, when the problem symptom is simulated based on the noted code.
  1. Without an output of the code, proceed to A.
  2. With an output of the code, proceed to B.
1. A: Go to step 5 .
2. B: Go to step 7
See PROBLEM SYMPTOMS TABLE .
1. Without an applicable symptoms table, proceed to A.
2. With an applicable symptoms table, proceed to B.
1. A: Go to step 6 .
2. B: Go to step 7 .
ACCORDING TO PROBLEM SYMPTOM, PERFORM TROUBLESHOOTING
1. See PRE-CHECK .
2. See TERMINALS OF ECU .
ADJUST, REPAIR OR REPLACE
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