Lexus IS250 IS220d GSE20 ALE20 2AD-FHV ENGINE CONTROL SYSTEM
ECD SYSTEM - HOW TO PROCEED WITH TROUBLESHOOTING
- HINT:
Use the following procedures to troubleshoot the ECD system.
The intelligent tester should be used in steps 3, 4, 5, 7, and 9.
1.VEHICLE BROUGHT TO WORKSHOP |
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2.CUSTOMER PROBLEM ANALYSIS |
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3.CONNECT INTELLIGENT TESTER TO DLC3 |
- 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 |
- 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 |
- 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
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9.CHECK DTC |
- Result:
Result Proceed to Trouble code A No trouble code B
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10.REFER TO DTC CHART |
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11.CONDUCT BASIC INSPECTION |
- Result:
Result Proceed to Malfunctioning parts not confirmed A Malfunctioning parts confirmed B
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12.REFER TO PROBLEM SYMPTOMS TABLE |
- HINT:
Engine difficult to start or stalling .
Black smoke emitted .
Rough idling or excessive engine vibration .
Engine knocking or rattling .
Lack of power or hesitation .
- Result:
Result Proceed to Malfunctioning circuit confirmed A Malfunctioning parts confirmed B
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13.CHECK ECM POWER SOURCE CIRCUIT |
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14.CONDUCT CIRCUIT INSPECTION |
- Result:
Result Proceed to Malfunction not confirmed A Malfunction confirmed B
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15.CHECK FOR INTERMITTENT PROBLEMS |
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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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LEXUS IS250, IS220d / GSE20 ALE20