How To Proceed With Troubleshooting

1. VEHICLE BROUGHT TO WORK SHOP 
2. CUSTOMER PROBLEM ANALYSIS CHECK  
3. CHECK AND CLEAR DTC (See  PRE-CHECK  ) 
   1. DTC DOES NOT OUTPUT (PROCEED TO "BODY MULTIPLEX COMMUNICATION SYSTEM") 
   2. DTC OUTPUTS (GO TO STEP   4 ) 
4. PROBLEM SYMPTOM CONFIRMATION 
   1. SYMPTOM DOES NOT OCCUR (GO TO STEP   5 ) 
   2. SYMPTOM OCCURS (GO TO STEP   6 ) 
5. SYMPTOM SIMULATION (See  HOW TO PROCEED WITH TROUBLESHOOTING  ) 
6. DTC CHECK (See  PRE-CHECK  ) 
   1. MALFUNCTION CODE (GO TO STEP   7 ) 
   2. NORMAL CODE (GO TO STEP   8 ) 
7. (See  DIAGNOSTIC TROUBLE CODE TABLE  ) 
   1. GO TO STEP   9 
8. (See  PROBLEM SYMPTOMS TABLE  ) 
9. CIRCUIT INSPECTION (See  DTC P0500/21 VEHICLE SPEED SENSOR "A", DTC P0503/23 VEHICLE SPEED SENSOR "A" INTERMITTENT/ERRATIC/HIGH   -  DIAGNOSIS CIRCUIT  ) 
10. IDENTIFICATION OF PROBLEM 
11. REPAIR OR REPLACE 
12. CONFIRMATION TEST 
    1. Go to END 

HINT:

Step  3,  6,  9,  12:

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