How To Proceed With Troubleshooting

HINT:

• Use these procedures to troubleshoot the smart key system.
• *: Use the Techstream.

1. VEHICLE BROUGHT TO WORKSHOP 
2. INSPECT BATTERY VOLTAGE 

   Standard voltage: 11 to 14 V 

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

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

   Result: 

   RESULT CHART
   
   

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

   B: Go to CAN COMMUNICATION SYSTEM  (See DIAGNOSTIC TROUBLE CODE CHART )

   A: Go to next step 

4. INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION* 
   1. Use the Techstream to check if the LIN communication system is functioning normally.

   Result: 

   RESULT CHART
   
   

   Result	Proceed to
   LIN DTC is not output	A
   LIN DTC is output (2AR-FE)	B
   LIN DTC is output (2GR-FE)	C

   B: DIAGNOSTIC TROUBLE CODE CHART  (See DIAGNOSTIC TROUBLE CODE CHART )

   C: DIAGNOSTIC TROUBLE CODE CHART  (See DIAGNOSTIC TROUBLE CODE CHART )

   A: Go to next step 

5. PROBLEM SYMPTOMS TABLE 

   Result: 

   RESULT CHART
   
   

   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. Operation check (see OPERATION CHECK )
   2. Data List / Active Test (see DATA LIST / ACTIVE TEST )
   3. Terminals of ECU (see TERMINALS OF ECU )
7. ADJUST, REPAIR OR REPLACE 
8. CONFIRMATION TEST 

   NEXT: END