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Engine and Emission Control System Check: Notes

Refer to the following items for the detail of each step.

ENGINE AND EMISSION CONTROL SYSTEM DIAGNOSTIC CHART

Step Action YES NO
1  Customer complaint analysis 
  1. Perform customer complaint analysis.

Was customer complaint analysis performed? 		 Go to Step 2. Perform customer complaint analysis.
2  DTC(s) / Freeze frame data check 
  1. Check DTC(s) / Freeze frame data.

Is there any malfunction DTC(s)? 		 Record DTC(s) / Freeze frame data.
Clear DTC(s).
Go to Step 3.		 Go to Step 4.
3  Visual inspection 
  1. Perform visual inspection.

Is there any faulty condition? 		 Repair or replace malfunction part.
Go to Step 11.		 Go to Step 5.
4  Visual inspection 
  1. Perform visual inspection.

Is there any faulty condition? 		 Repair or replace malfunction part.
Go to Step 11.		 Go to Step 8.
5  Trouble symptom confirmation 
  1. Confirm trouble symptom based on customer complaint analysis, DTC(s) / freeze frame data in Step 1 and 2.

Is trouble symptom identified? 		 Go to Step 6. Go to Step 7.
6  DTC(s) / Freeze frame data recheck 
  1. Recheck DTC/freeze frame data.

Is there any malfunction DTC(s)? 		 Go to Step 9. Go to Step 8.
7  DTC(s) / Freeze frame data recheck 
  1. Recheck DTC / freeze frame data.

Is there any malfunction DTC(s)? 		 Go to Step 9. Go to Step 10.
8  Engine basic inspection 
  1. Check and repair according to Engine Basic Check  and Engine Symptom Diagnosis .

Are check and repair complete? 		 Go to Step 11. Check and repair malfunction part(s). Go to Step 11.
9  DTC troubleshooting 
  1. Check and repair according to applicable DTC diag. flow.

Are check and repair complete? 		 Go to Step 11. Check and repair malfunction part(s). Go to Step 11.
10  Intermittent problem check 
  1. Check for intermittent problems referring to INTERMITTENT AND POOR CONNECTION INSPECTION .

Are check and repair complete? 		 Repair or replace malfunction part. Go to Step 11. Go to Step 11.
11  Final confirmation test 
  1. Clear DTC if any.
  2. Perform final confirmation test referring to applicable "DTC Confirmation Procedure".

Is there any problem symptom, malfunction DTC or abnormal condition? 		 Go to Step 6. END.
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