How To Proceed With Troubleshooting

HINT:

Step  3,  4,  9:

Diagnostic steps permitting the use of the hand-held tester.

1. VEHICLE BROUGHT TO WORK SHOP 
   1. GO TO NEXT STEP 
2. CUSTOMER PROBLEM ANALYSIS (See  CUSTOMER PROBLEM ANALYSIS CHECK   ) 
   1. GO TO NEXT STEP 
3. CHECK BODY MULTIPLEX COMMUNICATION SYSTEM (See  MULTIPLEX COMMUNICATION SYSTEM  ) 
   1. Check that the DTCs output.

   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.

   1. DTC OUTPUTS (PROCEED TO "BODY MULTIPLEX COMMUNICATION SYSTEM") 
   2. DTC DOES NOT OUTPUT (GO TO STEP   4 ) 
4. THE DTCs CHECK (See  PRE-CHECK   ) 
   1. MALFUNCTION CODE (GO TO STEP   5 ) 
   2. NORMAL CODE (GO TO STEP   6 ) 
5. (See  DIAGNOSTIC TROUBLE CODE TABLE   ) 
   1. GO TO STEP   9 
6. PROBLEM SYMPTOM CONFIRMATION 
   1. SYMPTOM DOES NOT OCCUR (GO TO STEP   7 ) 
   2. SYMPTOM OCCURS (GO TO STEP   8 ) 
7. SYMPTOM SIMULATION (See  HOW TO PROCEED WITH TROUBLESHOOTING  ) 
   1. GO TO STEP   9 
8. (See  PROBLEM SYMPTOMS TABLE   ) 
   1. GO TO NEXT STEP 
9. CIRCUIT INSPECTION (See  DTC P0500/21 VEHICLE SPEED SENSOR CIRCUIT, DTC P0503/23 VEHICLE SPEED SENSOR "A" INTERMITTENT/ERRATIC/HIGH   -  DIAGNOSIS CIRCUIT   ) 
   1. GO TO NEXT STEP 
10. (See  TERMINALS OF ECU   ) 
    1. GO TO NEXT STEP 
11. IDENTIFYING PROBLEM 
    1. GO TO NEXT STEP 
12. REPAIR OR REPLACE 
    1. GO TO NEXT STEP 
13. CONFIRMATION TEST 
    1. END