How To Proceed With Troubleshooting

NOTE: Troubleshoot in accordance with the procedure in the following articles.

VEHICLE BROUGHT TO WORKSHOP
SYMPTOM CHECK
INSPECT COMMUNICATION FUNCTION OF LARGE-SCALE MULTIPLEX COMMUNICATION SYSTEM (BEAN)
1. Check that there is no abnormality in the communication system by inspecting the communication function of the multiplex communication system with the hand-held tester.
  1. (ECU communication stop, communication line abnormal) With code output, proceed to A.
  2. (ECU communication stop, communication line abnormal) Without code output, proceed to B.
1. B : GO TO EACH SYSTEM ARTICLE
2. A : GO TO NEXT STEP
DIAGNOSTIC TROUBLE CODE CHECK (See DIAGNOSTIC TROUBLE CODE CHART )
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. When no code is output (symptom check and simulation is possible), proceed to A.
  2. When no code is output (symptom check and simulation is impossible), proceed to B.
  3. When the code is output, proceed to C.
1. B: GO TO PROBLEM SIMULATION See SYMPTOM SIMULATION .
2. C: GO TO STEP 7
3. A: GO TO NEXT STEP
PROBLEM 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 IN THE FOLLOWING METHOD, DEPENDING ON MALFUNCTION SYMPTOM
1. Pre-check (See PRE-CHECK )
2. Terminals of ECU (See TERMINALS OF ECU )
ADJUSTMENT, REPAIR OR REPLACEMENT
1. END