How To Proceed With Troubleshooting

HINT:

• Use these procedures to troubleshoot the theft deterrent system.
• *: Use the Techstream.
• Troubleshooting of the theft deterrent system is based on the premise that the door lock control system, the wireless door lock control system, the lighting system, the horn system, the engine immobilizer system and the smart access system with push-button start are operating normally. Check these systems first before troubleshooting the theft deterrent system.

1. VEHICLE BROUGHT TO WORKSHOP 
2. INSPECT BATTERY VOLTAGE 

   Standard voltage: 

   11 to 14 V 

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

3. INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* 
   1. Using the Techstream, check if the CAN communication system is functioning normally.

   Result 

   RESULT REFERENCE TABLE
   
   

   Result	Proceed to
   CAN DTC is not output	A
   CAN DTC is output	B

   B:  Go to CAN COMMUNICATION SYSTEM

   A: Go to Next Step 

4. CHECK LIN COMMUNICATION SYSTEM* 
   1. The theft deterrent system uses the LIN communication system to communicate. Check that the LIN communication system is functioning normally.

   Result 

   RESULT REFERENCE
   
   

   Result	Proceed to
   LIN communication system is normal	A
   LIN communication system is malfunctioning	B

   B:  Go to LIN COMMUNICATION SYSTEM

   A: Go to Next Step 

5. PROBLEM SYMPTOMS TABLE 

   Result 

   RESULT REFERENCE
   
   

   Result	Proceed to
   Fault is not listed in problem symptoms table	A
   Fault is listed in problem symptoms table	B

   B:  Go to step  7

   A: Go to Next Step 

6. OVERALL ANALYSIS AND TROUBLESHOOTING* 
   1. See DATA LIST/ACTIVE TEST 
   2. See TERMINALS OF ECU 
   3. See ON-VEHICLE INSPECTION 
   4. Inspection
      1. Engine Hood Courtesy Switch (see INSPECTION  )
      2. Security Indicator Light (see SECURITY INDICATOR LIGHT ASSEMBLY  )
      3. Security Horn Assembly (see SECURITY HORN ASSEMBLY  )
7. REPAIR OR REPLACE 
8. CONFIRMATION TEST 

   NEXT: END