How to proceed with troubleshooting

HINT:
 
  1. Use the following procedures to troubleshoot the ECD system.
  2. *: Use the intelligent tester.

 

1.VEHICLE BROUGHT TO WORKSHOP

 

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2.CUSTOMER PROBLEM ANALYSIS

 

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3.CONNECT INTELLIGENT TESTER TO DLC3*

  1. HINT:
     
    If the display indicates a communication error with the tester, inspect the DLC3.

 

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4.CHECK DTC AND FREEZE FRAME DATA*

  1. HINT:
     
    Record or print DTCs and freeze frame data if necessary.

 

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5.CLEAR DTC AND FREEZE FRAME DATA*

 

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6.CONDUCT VISUAL INSPECTION

 

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7.SET CHECK MODE DIAGNOSIS*

 

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8.CONFIRM PROBLEM SYMPTOMS

 

  1. HINT:
     
    If the engine does not start, first perform the "REFER TO DTC CHART" procedures and "REFER TO PROBLEM SYMPTOMS TABLE" procedures below.
    Result:
    Result Proceed to
    Malfunction occurs A
    Malfunction does not occur B

 

  B.
SIMULATE SYMPTOMS
A  
 

 

9.CHECK DTC*

 

 

  1. Result:
    Result Proceed to
    Trouble code A
    No trouble code B

 

  B.
Go to step 11
A  
 

 

10.REFER TO DTC CHART

 

NEXT  
 
Go to step 14

 

11.CONDUCT BASIC INSPECTION

 

 

  1. Result:
    Result Proceed to
    Malfunctioning parts not confirmed A
    Malfunctioning parts confirmed B

 

  B.
Go to step 16
A  
 

 

12.REFER TO PROBLEM SYMPTOMS TABLE

  1. HINT:
     
    1. Engine difficult to start or stalling.
    2. Black smoke emitted.
    3. Rough idling or excessive engine vibration.
    4. Engine knocking or rattling.
    5. Lack of power or hesitation.
    Result:
    Result Proceed to
    Malfunctioning circuit confirmed A
    Malfunctioning parts confirmed B

 

  B.
Go to step 16
A  
 

 

13.CHECK ECM POWER SOURCE CIRCUIT

 

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14.CONDUCT CIRCUIT INSPECTION

 

 

  1. Result:
    Result Proceed to
    Malfunction not confirmed A
    Malfunction confirmed B

 

  B.
Go to step 17
A  
 

 

15.CHECK FOR INTERMITTENT PROBLEMS

 

NEXT  
 
Go to step 17

 

16.CONDUCT PARTS INSPECTION

 

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17.IDENTIFY PROBLEM

 

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18.ADJUST AND/OR REPAIR OR REPLACE

 

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19.CONDUCT CONFIRMATION TEST

 

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END