SFI SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips

*: Use the GTS.

VEHICLE BROUGHT TO WORKSHOP

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CUSTOMER PROBLEM ANALYSIS

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CONNECT GTS TO THE DLC3*

Tech Tips

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

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

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CHECK DTC AND FREEZE FRAME DATA*
Tech Tips

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

Tech Tips

Refer to the relevant pages Click here.

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CONDUCT VISUAL INSPECTION

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SET CHECK MODE DIAGNOSIS*

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CONFIRM PROBLEM SYMPTOMS

Tech Tips

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

Result

Result	Proceed to
Malfunction does not occur	A
Malfunction occurs	B

B

GO TO STEP 10

A

SIMULATE SYMPTOMS

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CHECK FOR DTC*

Tech Tips

Refer to the relevant pages Click here.

Result

Result	Proceed to
Trouble code	A
No code	B

B

GO TO STEP 12

A

REFER TO DTC CHART

Tech Tips

Refer to the relevant pages Click here.

NEXT

GO TO STEP 14

CONDUCT BASIC INSPECTION

Result

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

B

GO TO STEP 17

A

REFER TO PROBLEM SYMPTOMS TABLE

Result

Result	Proceed to
Malfunctioning circuit confirmed	A
Malfunctioning parts confirmed	B

B

GO TO STEP 17

A

CHECK ECM POWER SOURCE CIRCUIT

Tech Tips

Refer to the relevant pages Click here.

NEXT

CONDUCT CIRCUIT INSPECTION

Result

Result	Proceed to
Malfunction not confirmed	A
Malfunction confirmed	B

B

GO TO STEP 18

A

CHECK FOR INTERMITTENT PROBLEMS

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GO TO STEP 18
CONDUCT PARTS INSPECTION

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IDENTIFY PROBLEM

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ADJUST AND/OR REPAIR

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CONDUCT CONFIRMATION TEST

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END