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How To Proceed With Troubleshooting

WARNING: This page is about a different car, the 2004 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: When DTCs other than U0121/94, U0123/62, U0124/95, U0126/63, C1231/31, C1234/34, C1243/43, C1244/44 or C1245/45 are output, inspect and repair the trouble areas indicated by the DTCs.
  1. DTC CHART (See  DIAGNOSTIC TROUBLE CODE CHART  ) 
    1. Go to next step.
  2. Check DTC Combination (See  PRE-CHECK  ) 
    1. Go to next step.
  3. CIRCUIT INSPECTION (See  SKID CONTROL ECU COMMUNICATION STOP MODE  ) 
    1. Go to next step.
  4. IDENTIFICATION OF PROBLEM 
    1. Go to next step.
  5. REPAIR OR REPLACE 
    1. Go to next step.
  6. CONFIRMATION TEST 
    1. END 
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