ECD SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips

*: Use the intelligent tester.

VEHICLE BROUGHT TO WORKSHOP

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CUSTOMER PROBLEM ANALYSIS

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CONNECT INTELLIGENT TESTER TO THE DLC3*

Tech Tips

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

When any CAN communication system DTCs are output, perform troubleshooting on the CAN communication system first Click here.

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CHECK DTC AND FREEZE FRAME DATA*
Tech Tips

Record or print DTCs and freeze frame data, if necessary.
- Check the DTC Click here.
- Check the freeze frame data Click here.
NEXT
CLEAR DTC AND FREEZE FRAME DATA* Click here

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CONDUCT VISUAL INSPECTION

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CONFIRM PROBLEM SYMPTOMS

Tech Tips

If the engine does not start, first perform the "Check for DTC" procedures and "Conduct Basic Inspection" procedures below.

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

B

Go to step 9

A

SIMULATE SYMPTOMS

NEXT

CHECK FOR DTC* Click here

Result
Result	Proceed to
Trouble code	A
No trouble code	B

B

Go to step 11

A

REFER TO DTC CHART Click here

NEXT

Go to step 13

CONDUCT BASIC INSPECTION

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

B

Go to step 16

A

REFER TO PROBLEM SYMPTOMS TABLE Click here

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

B

Go to step 16

A

CHECK ECM POWER SOURCE CIRCUIT Click here

NEXT

CONDUCT CIRCUIT INSPECTION

Result
Result	Proceed to
Malfunction not confirmed	A
Malfunction confirmed	B

B

Go to step 17

A

CHECK FOR INTERMITTENT PROBLEMS Click here

NEXT

Go to step 17
CONDUCT PARTS INSPECTION

NEXT
IDENTIFY PROBLEM

NEXT
ADJUST AND/OR REPAIR

NEXT
CONDUCT CONFIRMATION TEST

NEXT

END