How To Proceed With Troubleshooting

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

VEHICLE BROUGHT TO WORKSHOP
CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK (See CUSTOMER PROBLEM ANALYSIS 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 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 (See DIAGNOSTIC TROUBLE CODE CHART )
2. A : Go To Next Step
DIAGNOSTIC TROUBLE CODE CHECK (See DIAGNOSTIC TROUBLE CODE CHART )
1. Check the diagnostic trouble 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
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 )
  1. Check with hand-held tester (ECU data monitor).
  2. Check with hand-held tester (Active test).
2. Terminals of ECU (See TERMINALS OF ECU )
ADJUSTMENT, REPAIR OR REPLACEMENT
1. END