How To Proceed With Troubleshooting

WARNING: This page is about a different car, the 2003 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Troubleshooting of the wireless door lock control system is based on the premise that the power door lock system and back power window control system are operating normally. Therefore, before troubleshooting the wireless door lock control system, first make certain that the power door lock system and back power window control system are operating normally.

Troubleshoot in accordance with the procedures listed:

Vehicle Brought To Workshop
Customer Problem Analysis Check And Symptom Check. See CUSTOMER PROBLEM ANALYSIS CHECK .
Diagnostic Trouble Code Check. See DIAGNOSTIC TROUBLE CODE CHART .
1. Check the 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 base on the noted code.
  1. Without code outputs, proceed to next step.
  2. With code outputs, proceed to step 6.
Problem Symptoms Table See PROBLEM SYMPTOMS TABLE .
1. Without applicable symptoms, proceed to next step.
2. With applicable symptoms, proceed to step 6.
Perform Troubleshooting By Following Method, Depending On Malfunction Symptom
1. PRE-CHECK
  1. Inspection with the hand-held tester (ECU DATA LIST)
  2. Inspection with the hand-held tester (ACTIVE TEST)
2. TERMINALS OF ECU
3. On-vehicle inspection. See ON-VEHICLE INSPECTION in THEFT DETERRENT & DOOR LOCK article.
Adjust, Repair Or Replace
Confirmation Test
1. END