SFI SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING
Tech Tips
*: Use the intelligent tester.
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VEHICLE BROUGHT TO WORKSHOP
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CUSTOMER PROBLEM ANALYSIS
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CONNECT INTELLIGENT TESTER TO DLC3
Tech Tips
If the display indicates a communication fault in the intelligent tester, inspect the DLC3.
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CHECK DTC AND FREEZE FRAME DATA*
Tech Tips
Record or print DTCs and freeze frame data, if necessary.
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Check the DTC Click here.
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Check the Freeze Frame Data Click here.
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CLEAR DTC AND FREEZE FRAME DATA*
Tech Tips
Refer to DTC Check / Clear Click here.
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CONDUCT VISUAL INSPECTION
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SET CHECK MODE DIAGNOSIS*
Tech Tips
Refer to Check Mode Procedure Click here.
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CONFIRM PROBLEM SYMPTOMS
Tech Tips
If the engine does not start, perform steps 10 and 12 first.
Result Proceed to Malfunction does not occur A Malfunction occurs B
B 
GO TO STEP 10
A
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SIMULATE SYMPTOMS
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CHECK FOR DTC*
Tech Tips
Refer to DTC Check / Clear Click here.
Result Proceed to DTC is output A DTC is not output B
B
GO TO STEP 12
A
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REFER TO DTC CHART
Tech Tips
Refer to Diagnostic Trouble Code Chart Click here.
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CONDUCT BASIC INSPECTION
Tech Tips
Refer to Basic Inspection Click here.
Result Proceed to Malfunctioning parts not confirmed A Malfunctioning parts confirmed B
B
GO TO STEP 17
A
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REFER TO PROBLEM SYMPTOMS TABLE
Tech Tips
Refer to Problem Symptoms Table Click here.
Result Proceed to Malfunctioning circuit confirmed A Malfunctioning parts confirmed B
B
GO TO STEP 17
A
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CHECK ECM POWER SOURCE CIRCUIT
Tech Tips
Refer to ECM Power Source Circuit Click here.
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CONDUCT CIRCUIT INSPECTION
Result Proceed to Malfunction not confirmed A Malfunction confirmed B
B
GO TO STEP 18
A
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CHECK FOR INTERMITTENT PROBLEMS
Tech Tips
Refer to Check For Intermittent Problems Click here.
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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