How to Proceed with Troubleshooting

2TR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING

HOW TO PROCEED WITH TROUBLESHOOTING

*: Use the Techstream.
1. VEHICLE BROUGHT TO WORKSHOP
NEXT -- Continue to next step.

2. CUSTOMER PROBLEM ANALYSIS
NEXT -- Continue to next step.

3. CONNECT TECHSTREAM TO DLC3*
HINT: If the display indicates a communication fault in the Techstream, inspect the DLC3.

NEXT -- Continue to next step.

4. CHECK DTC AND FREEZE FRAME DATA*
HINT: Record or print DTCs DTC Check / Clear and freeze frame data Freeze Frame Data, if necessary.

NEXT -- Continue to next step.

5. CLEAR DTC AND FREEZE FRAME DATA*
HINT: Refer to DTC Check / Clear DTC Check / Clear.

NEXT -- Continue to next step.

6. CONDUCT VISUAL INSPECTION
NEXT -- Continue to next step.

7. SET CHECK MODE DIAGNOSIS*
HINT: Refer to Check Mode Procedure Check Mode Procedure.

NEXT -- Continue to next step.

8. CONFIRM PROBLEM SYMPTOMS
HINT: If the engine does not start, first perform the "CHECK DTC" procedures and "CONDUCT BASIC INSPECTION" procedures below.





B -- GO TO STEP 10
A -- Continue to next step.

9. SIMULATE SYMPTOMS
NEXT -- Continue to next step.

10. CHECK DTC*
HINT: Refer to DTC Check / Clear DTC Check / Clear.





B -- GO TO STEP 12
A -- Continue to next step.

11. REFER TO DTC CHART
HINT: Refer to Diagnostic Trouble Code Chart Engine Control System - SFI System.

NEXT -- GO TO STEP 14
12. CONDUCT BASIC INSPECTION
HINT: Refer to Basic Inspection Engine Control System - SFI System - Basic Inspection.





B -- GO TO STEP 17
A -- Continue to next step.

13. REFER TO PROBLEM SYMPTOMS TABLE
HINT: Refer to Problem Symptoms Table Symptom Related Diagnostic Procedures.





B -- GO TO STEP 17
A -- Continue to next step.

14. CHECK ECM POWER SOURCE CIRCUIT
HINT: Refer to ECM Power Source Circuit ECM Power Source Circuit.

NEXT -- Continue to next step.

15. CONDUCT CIRCUIT INSPECTION






B -- GO TO STEP 18
A -- Continue to next step.

16. CHECK FOR INTERMITTENT PROBLEMS
HINT: Refer to Check for Intermittent Problems Engine Control System - SFI System - Check for Intermittent Problems.

NEXT -- GO TO STEP 18
17. CONDUCT PARTS INSPECTION
NEXT -- Continue to next step.

18. IDENTIFY PROBLEM
NEXT -- Continue to next step.

19. ADJUST AND/OR REPAIR
NEXT -- Continue to next step.

20. CONDUCT CONFIRMATION TEST
NEXT -- END