Theft Deterrent System

THEFT DETERRENT / KEYLESS ENTRY: THEFT DETERRENT SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

HINT
* Use these procedures to troubleshoot the theft deterrent system.
* *: Use the Techstream.
* The troubleshooting procedures for the theft deterrent system are based on the premise that the door lock control system, wireless door lock control system, lighting system, horn system, engine immobiliser system and smart key system (w/ Smart Key System) are operating normally. Check these systems first before troubleshooting the theft deterrent system.
1. VEHICLE BROUGHT TO WORKSHOP

NEXT -- Continue to next step.

2. INSPECT BATTERY VOLTAGE

Standard voltage:

11 to 14 V

If the voltage is below 11 V, recharge or replace the battery before proceeding.

NEXT -- Continue to next step.

3. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Use the Techstream to check if the CAN communication system is functioning normally.





B -- GO TO CAN COMMUNICATION SYSTEM How to Proceed With Troubleshooting
A -- Continue to next step.

4. CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*

(a) The theft deterrent system uses the LIN communication system to communicate. Check that the LIN communication system is functioning normally.





B -- GO TO LIN COMMUNICATION SYSTEM Initial Inspection and Diagnostic Overview
A -- Continue to next step.

5. PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table Theft Deterrent System.





B -- Go to step 8
A -- Continue to next step.

6. OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Data List / Active Test Theft Deterrent System

(b) Terminals of ECU Theft Deterrent System

(c) Inspection

NEXT -- Continue to next step.

7. REPAIR OR REPLACE

NEXT -- Continue to next step.

8. CONFIRMATION TEST

NEXT -- END