GSIC - Global Service Information Center

# ECD SYSTEM > HOW TO PROCEED WITH TROUBLESHOOTING

## for Preparation Click here

HINT:

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

1. When using intelligent tester:

1.VEHICLE BROUGHT TO WORKSHOP

NEXT |

2.CUSTOMER PROBLEM ANALYSIS

NEXT |

3.CONNECT INTELLIGENT TESTER TO DLC3*

HINT:

  If the display indicates a communication fault with the tester, inspect the DLC3.

NEXT |

4.CHECK DTC AND FREEZE FRAME DATA*

HINT:

  Record or print DTCs and freeze frame data if necessary.

NEXT |

5.CLEAR DTC AND FREEZE FRAME DATA*

NEXT |

6.CONDUCT VISUAL INSPECTION

NEXT |

7.SET CHECK MODE DIAGNOSIS*

NEXT |

8.CONFIRM PROBLEM SYMPTOMS

HINT:

  If the engine does not start, perform steps 10 and 12 first.

Result:

  Result | Proceed to
  Malfunction occurs | A
  Malfunction does not occur | B

| B. |

SIMULATE SYMPTOMS

A |

9.CHECK DTC

Result:

  Result | Proceed to
  Malfunction code | A
  No malfunction code | B

| B. |

Go to step 11

A |

10.REFER TO DTC CHART*

NEXT |

Go to step 13

11.CONDUCT BASIC INSPECTION

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

HINT:

1. Engine difficult to start or stalling (Click here).
2. Black smoke emitted (Click here).
3. Rough idling or excessive engine vibration (Click here).
4. Engine knocking or rattling (Click here).
5. Lack of power or hesitation (Click here).

Result:

  Result | Proceed to
  Malfunctioning circuit confirmed | A
  Malfunctioning parts confirmed | B

| B. |

Go to step 16

A |

13.CHECK ECM POWER SOURCE CIRCUIT

NEXT |

14.CONDUCT CIRCUIT INSPECTION

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 18

16.CONDUCT PARTS INSPECTION

NEXT |

17.IDENTIFY PROBLEM

NEXT |

18.ADJUST AND/OR REPAIR

NEXT |

19.CONDUCT CONFIRMATION TEST

NEXT |

END

1. When not using intelligent tester:

1.VEHICLE BROUGHT TO WORKSHOP

NEXT |

2.CUSTOMER PROBLEM ANALYSIS

NEXT |

3.CHECK AND CLEAR DTC

NEXT |

4.CONFIRM PROBLEM SYMPTOMS

Result:

  Result | Proceed to
  Malfunction occurs | A
  Malfunction does not occur | B

| B. |

SIMULATE SYMPTOM

A |

5.CHECK DTC

Result:

  Result | Proceed to
  Malfunction code | A
  No malfunction code | B

| B. |

Go to step 7

A |

6.REFER TO DTC CHART

NEXT |

Go to step 9

7.CONDUCT BASIC INSPECTION

Result:

  Result | Proceed to
  Malfunctioning parts not confirmed | A
  Malfunctioning parts confirmed | B

| B. |

Go to step 12

A |

8.REFER TO PROBLEM SYMPTOMS TABLE

HINT:

1. Engine difficult to start or stalling (Click here).
2. Black smoke emitted (Click here).
3. Rough idling or excessive engine vibration (Click here).
4. Engine knocking or rattling (Click here).
5. Lack of power or hesitation (Click here).

Result:

  Result | Proceed to
  Malfunctioning circuit confirmed | A
  Malfunctioning parts confirmed | B

| B. |

Go to step 12

A |

9.CHECK ECM POWER SOURCE CIRCUIT

NEXT |

10.CONDUCT CIRCUIT INSPECTION

Result:

  Result | Proceed to
  Malfunction not confirmed | A
  Malfunction confirmed | B

| B. |

Go to step 13

A |

11.CHECK FOR INTERMITTENT PROBLEMS

NEXT |

Go to step 13

12.CONDUCT PARTS INSPECTION

NEXT |

13.IDENTIFY PROBLEM

NEXT |

14.ADJUST AND/OR REPAIR

NEXT |

15.CONDUCT CONFIRMATION TEST

NEXT |

END