How To Proceed With Troubleshooting

WARNING: This page is about a different car, the 2005 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

Troubleshoot in accordance with the procedures on the following examples.

VEHICLE BROUGHT TO WORKSHOP
Go to next step.
CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK ( CUSTOMER PROBLEM ANALYSIS CHECK )
Go to next step.
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.
  1. (ECU communication stop, communication line abnormal) With code outputs, proceed to A.
  2. (ECU communication stop, communication line abnormal) Without code outputs, proceed to B.
1. B: GO TO SECTION OF EACH SYSTEM
A: Go to next step.
DIAGNOSTIC TROUBLE CODE CHECK (See DIAGNOSTIC TROUBLE CODE CHART )
1. Check for DTCs and make a note of the code that 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 a code is output, proceed to B.
1. B: Go to step 7
A: Go to next step.
PROBLEM SYMPTOMS TABLE
1. Without applicable symptoms, proceed to A.
2. With applicable symptoms, proceed to B.
1. B: Go to step 7
A: Go to next step.
PERFORM TROUBLESHOOTING IN FOLLOWING METHOD, DEPENDING ON MALFUNCTION SYMPTOM
1. PRE-CHECK
2. TERMINALS OF ECU
ADJUST, REPAIR OR REPLACE
Go to next step.

END