How To Proceed With Troubleshooting

THEFT DETERRENT: THEFT DETERRENT SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

HINT
Use these procedures to troubleshoot the theft deterrent system.

*: Use the Techstream.

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. INSPECT COMMUNICATION FUNCTION OF LARGE-SCALE MULTIPLEX COMMUNICATION SYSTEM (BEAN)*

(a) Use the Techstream to check if the Multiplex Communication System (MPX) is functioning normally.





B -- Go to MULTIPLEX COMMUNICATION SYSTEM
A -- Continue to next step.

4. PROBLEM SYMPTOMS TABLE





B -- Go to step 6
A -- Continue to next step.

5. OVERALL ANALYSIS AND TROUBLESHOOTING

(a) DATA LIST / ACTIVE TEST Theft Deterrent System

(b) Terminals of ECU Theft Deterrent System

(c) Inspection

Engine hood courtesy switch Testing and Inspection

Security horn assembly Testing and Inspection

Security indicator light assembly Testing and Inspection

NEXT -- Continue to next step.

6. ADJUST, REPAIR OR REPLACE

NEXT -- Continue to next step.

7. CONFIRMATION TEST

NEXT -- END