How to Proceed with Troubleshooting

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

HOW TO PROCEED WITH TROUBLESHOOTING
HINT: *: 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 with the Techstream, inspect the DLC3. When any CAN communication system DTCs are output, perform troubleshooting on the CAN communication system first.

NEXT -- Continue to next step.

4. CHECK DTC AND FREEZE FRAME DATA*
HINT: Record or print DTCs and freeze frame data, if necessary.

NEXT -- Continue to next step.

5. CLEAR DTC AND FREEZE FRAME DATA*
NEXT -- Continue to next step.

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

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

NEXT -- Continue to next step.

8. CONFIRM PROBLEM SYMPTOMS
HINT:
- Refer to Problem Symptoms Table Symptom Related Diagnostic Procedures.
- If the engine does not start, first perform the "Check DTC" procedure and "Conduct Basic Inspection" procedure below.





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

9. SIMULATE SYMPTOMS
HINT: Refer to Problem Symptoms Table Symptom Related Diagnostic Procedures.

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 -- Continue to next step.

12. CONDUCT 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
NEXT -- Continue to next step.

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