How To Proceed With Troubleshooting

HINT:

Troubleshoot in accordance with the procedures on the following pages.

1. VEHICLE BROUGHT TO WORKSHOP 

   GO TO NEXT STEP 

2. CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK (See  CUSTOMER PROBLEM ANALYSIS CHECK   ) 

   GO TO NEXT STEP 

3. CRANK ENGINE FOR MORE THAN 10 SECONDS 

   GO TO NEXT STEP 

4. CHECK DTC 
   1. Check for DTCs and note any codes that are output.
   2. Delete the DTC.
   3. Recheck for DTCs. Try to prompt the DTC (SFI system and engine immobilizer system) by simulating the original activity that the DTC suggested.
      1. If the DTC does not reoccur, proceed to A.
      2. If the DTC (SFI system) reoccurs, proceed to B.
      3. If the DTC (engine immobilizer system) reoccur, proceed to C.
   1. B Go to SFI SYSTEM (2AZ-FE engine: See  DEFINITION OF TERMS  ) (1MZ-FE/3MZ-FE engine: See  DEFINITION OF TERMS  ) 
   2. C Go to step   8 . 
   3. A: GO TO NEXT STEP 
5. READ VALUE OF HAND-HELD TESTER (IMMOBILIZER ECU (TRANSPONDER KEY ECU ASSY) (SWITCH CONDITION)) 
   1. Connect the hand-held tester to the DLC3
   2. Turn the ignition switch ON and push the hand-held tester main switch ON.
   3. Select the item "KEY SW" in the "DATA LIST" and read its value displayed on the hand-held tester.

      Transponder key ECU assy: 

      DATA LIST CHART
      
      

      Item	Measurement Item/Display (Range)	Normal Condition	Diagnostic Note
      KEY SW	Unlock warning switch signal/ON or OFF	ON: Key is in IG key cylinder	-
      KEY SW	Unlock warning switch signal/ON or OFF	OFF: No key is in IG key cylinder	-

   1. NG: Go to DTC B2780 (See  DTC B2780 PUSH SWITCH/KEY UNLOCK WARNING SWITCH MALFUNCTION   ) 
   2. OK: GO TO NEXT STEP 
6. PROBLEM SYMPTOMS TABLE (See  PROBLEM SYMPTOMS TABLE   ) 
   1. When problem is not listed on problem symptoms table, proceed to A.
   2. When problem is listed on problem symptoms table, proceed to B.
   1. B Go to step   8 . 
   2. A: GO TO NEXT STEP 
7. PERFORM TROUBLESHOOTING ACCORDING TO MALFUNCTION SYMPTOM 
   1. Pre-check (See PRE-CHECK  )
      1. Inspect with the hand-held tester (ECU data monitor).
      2. Inspect with the hand-held tester (Active test).
   2. Terminals of ECU (See TERMINALS OF ECU  )

      GO TO NEXT STEP 

8. ADJUST, REPAIR OR REPLACE 

   GO TO NEXT STEP 

   END