How to Proceed with Troubleshooting
2UZ-FE ENGINE CONTROL SYSTEM: 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. CONNECT TECHSTREAM TO DLC3*
HINT: If the display indicates a communication fault in the tester, inspect the DLC3.
NEXT -- Continue to next step.
3. CHECK DTC AND FREEZE FRAME DATA*
HINT: Record or print DTCs and freeze frame data, if necessary DTC Check / Clear.
NEXT -- Continue to next step.
4. CLEAR DTC AND FREEZE FRAME DATA*
HINT: Refer to DTC CHECK / CLEAR DTC Check / Clear.
NEXT -- Continue to next step.
5. CONDUCT VISUAL INSPECTION
NEXT -- Continue to next step.
6. SET CHECK MODE DIAGNOSIS*
HINT: Refer to CHECK MODE PROCEDURE Check Mode Procedure.
NEXT -- Continue to next step.
7. 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 9
A -- Continue to next step.
8. SIMULATE SYMPTOMS
NEXT -- Continue to next step.
9. CHECK DTC*
HINT: Refer to DTC CHECK / CLEAR DTC Check / Clear.
B -- GO TO STEP 11
A -- Continue to next step.
10. REFER TO DTC CHART
HINT: Refer to DIAGNOSTIC TROUBLE CODE CHART Engine Control System - SFI System.
NEXT -- GO TO STEP 13
11. CONDUCT BASIC INSPECTION
HINT: Refer to BASIC INSPECTION Engine Control System - SFI System - Basic Inspection.
B -- GO TO STEP 16
A -- Continue to next step.
12. REFER TO PROBLEM SYMPTOMS TABLE
HINT: Refer to PROBLEM SYMPTOMS TABLE Symptom Related Diagnostic Procedures.
B -- GO TO STEP 16
A -- Continue to next step.
13. CHECK ECM POWER SOURCE CIRCUIT
HINT: Refer to ECM Power Source Circuit ECM Power Source Circuit.
NEXT -- Continue to next step.
14. CONDUCT CIRCUIT INSPECTION
B -- GO TO STEP 17
A -- Continue to next step.
15. CHECK FOR INTERMITTENT PROBLEMS
HINT: Refer to CHECK FOR INTERMITTENT PROBLEMS Engine Control System - SFI System - Check for Intermittent Problems.
NEXT -- GO TO STEP 17
16. CONDUCT PARTS INSPECTION
NEXT -- Continue to next step.
17. IDENTIFY PROBLEM
NEXT -- Continue to next step.
18. ADJUST, REPAIR OR REPLACE
NEXT -- Continue to next step.
19. CONDUCT CONFIRMATION TEST
NEXT -- END