How To Proceed With Troubleshooting

The hand-held tester can be used at steps 4, 5, 6, 7, and 12.

1. VEHICLE BROUGHT TO WORK SHOP 
2. (SEE  CUSTOMER PROBLEM ANALYSIS CHECK   ) 
3. PROBLEM SYMPTOM CONFIRMATION 
4. CHECK BODY MULTIPLEX COMMUNICATION SYSTEM (SEE  HOW TO PROCEED WITH TROUBLESHOOTING  ) 
   1. Check for output DTCs.

   HINT:

   The ECM of this system is connected to the multiplex communication system. Therefore, before starting troubleshooting, make sure to check that there is no trouble in the multiplex communication system.

   MULTIPLEX SYSTEM DTC IS OUTPUT (PROCEED TO " MULTIPLEX COMMUNICATION SYSTEM  ") 

   NO MULTIPLEX SYSTEM DTC (GO TO STEP 5) 

5. CHECK CAN COMMUNICATION SYSTEM (SEE  PRECAUTION  ) 
   1. Check for output DTCs.

   HINT:

   The ECM of this system is connected to the CAN communication system. Therefore, before starting troubleshooting, make sure to check that there is no trouble in the CAN communication system.

   NG: CAN SYSTEM DTC IS OUTPUT (PROCEED TO "CAN COMMUNICATION SYSTEM") 

   NO CAN SYSTEM DTC (GO TO STEP 6) 

6. DTC CHECK AND CLEAR (SEE  DTC CHECK/CLEAR   ) 
7. DTC CHECK (OTHER THAN MULTIPLEX AND CAN SYSTEM DTC) (SEE  DTC CHECK/CLEAR   ) 

   TROUBLE CODE (GO TO STEP 8) 

   NORMAL SYSTEM CODE (GO TO STEP   9 ) 

8. (SEE  DIAGNOSTIC TROUBLE CODE CHART   ) 

   GO TO STEP   12 

9. PROBLEM SYMPTOM SIMULATION 

   SYMPTOM DOES NOT OCCUR (GO TO STEP 10) 

   SYMPTOM OCCURS (GO TO STEP   11 ) 

10. SYMPTOM SIMULATION (SEE  ELECTRONIC CIRCUIT INSPECTION PROCEDURE  ) 
11. (SEE  PROBLEM SYMPTOMS TABLE   ) 
12. CIRCUIT INSPECTION (SEE  DTC P0500 VEHICLE SPEED SENSOR CIRCUIT MALFUNCTION, DTC P0503 VEHICLE SPEED SENSOR CIRCUIT MALFUNCTION   -  DIAGNOSIS CIRCUIT   ) 
13. (SEE  TERMINALS OF ECM   ) 
14. IDENTIFICATION OF PROBLEM 
15. REPAIR OR REPLACE 
16. CONFIRMATION TEST 

    END