How To Proceed With Troubleshooting

WARNING: This page is about a different car, the 2004 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: Troubleshoot in accordance with the procedures on the following pages.

VEHICLE BROUGHT TO WORKSHOP
1. Go to next step.
CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK
1. Go to next step.
INSPECT COMMUNICATION FUNCTION OF LARGE-SCALE MULTIPLEX COMMUNICATION SYSTEM (BEAN)
1. Use the hand-held tester to check for normal function of the multiplex communication system.
  1. (ECU unconnected, communication line malfunctioning) Without code outputs, proceed to A.
  2. (ECU unconnected, communication line malfunctioning) With code outputs, proceed to B.
1. B: Go to MULTIPLEX COMMUNICATION SECTION (See HOW TO PROCEED WITH TROUBLESHOOTING )
2. A: Go to next step.
DTC CHECK (See DIAGNOSTIC TROUBLE CODE CHART )
1. Check for a diagnostic trouble code.
  1. Without code outputs, proceed to A.
  2. With code outputs, proceed to B.
1. B: Go to step 6
2. A: Go to next step.
PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )
1. When problem is not listed on problem symptoms table, proceed to A.
2. When problem is listed on problem symptoms table, proceed to B.
1. B: Go to step 7
2. A: Go to next step.
PERFORM TROUBLESHOOTING ACCORDING TO MALFUNCTION SYMPTOM
1. Pre-check (See PRE-CHECK ).
  1. Inspection with the hand-held tester (ECU DATA LIST).
  2. Inspection with the hand-held tester (ACTIVE TEST).
2. On-vehicle inspection (See ON-VEHICLE INSPECTION ).
3. Inspection (See INSPECTION ).
4. Terminals of ECU (See TERMINALS OF ECU ).
1. Go to next step.
ADJUST, REPAIR OR REPLACE
1. Go to next step.
RESET POWER SLIDE DOOR SYSTEM (See PRE-CHECK )
1. Go to next step.
CONFIRMATION TEST
1. END