HOW TO PROCEED WITH TROUBLESHOOTING

Troubleshooting

HINT:

The intelligent tester should be used in steps 3, 4, 5 and 10.

1.VEHICLE BROUGHT TO WORKSHOP

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2.CUSTOMER PROBLEM ANALYSIS

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3.CONNECT INTELLIGENT TESTER TO THE DLC3

HINT:

If the display indicates a communication fault in 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.CONFIRM PROBLEM SYMPTOMS

HINT:

If the engine does not start, perform steps 9 and 11 first.

Result:

Result	Proceed to
Malfunction does not occur	A
Malfunction occurs	B

B.
A

8.SIMULATE SYMPTOMS

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9.CHECK DTC

Result:

Result	Proceed to
Malfunction code	A
No code	B

B.
A

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

B.
A

12.REFER TO PROBLEM SYMPTOMS TABLE

Result:

Result	Proceed to
Malfunctioning circuit confirmed	A
Malfunctioning parts confirmed	B

B.
A

13.CHECK ECU POWER SOURCE CIRCUIT

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14.CONDUCT CIRCUIT INSPECTION

Result:

Result	Proceed to
Malfunction not confirmed	A
Malfunction confirmed	B

B.
A

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

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19.CONDUCT CONFIRMATION TEST

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