How to Proceed With Troubleshooting
2ZR-FXE ENGINE CONTROL: SFI SYSTEM: 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*
If the display indicates a communication fault in 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*
(a) Check for DTCs Reading and Clearing Diagnostic Trouble Codes and freeze frame data 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*
(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes and freeze frame data Freeze Frame Data.
NEXT -- Continue to next step.
6. CONDUCT VISUAL INSPECTION
NEXT -- Continue to next step.
7. SELECT CHECK MODE DIAGNOSIS*
(a) Switch the ECM from normal mode to check mode.
HINT
Refer to Check Mode Procedure Check Mode Procedure.
NEXT -- Continue to next step.
8. CONFIRM PROBLEM SYMPTOMS
(a) Confirm problem symptoms.
HINT
* Refer to Problem Symptoms Table Symptom Related Diagnostic Procedures.
* If the engine does not start, first perform the "Check DTC" procedures and "Conduct Basic Inspection" procedures below.
Result:
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*
(a) Check for DTCs.
HINT
Refer to DTC Check / Clear Reading and Clearing Diagnostic Trouble Codes.
Result:
B -- GO TO STEP 12
A -- Continue to next step.
11. REFER TO DTC CHART
HINT
Refer to Diagnostic Trouble Code Chart SFI System.
NEXT -- Continue to next step.
12. CONDUCT BASIC INSPECTION
(a) Conduct basic inspection.
HINT
Refer to Basic Inspection Basic Inspection.
Result:
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.
Result:
B -- GO TO STEP 17
A -- Continue to next step.
14. CHECK ECM POWER SOURCE CIRCUIT
(a) Check the ECM power source circuit.
HINT
Refer to ECM Power Source Circuit ECM Power Source Circuit.
NEXT -- Continue to next step.
15. CONDUCT CIRCUIT INSPECTION
Result:
B -- GO TO STEP 18
A -- Continue to next step.
16. CHECK FOR INTERMITTENT PROBLEMS
(a) Check for intermittent problems.
HINT
Refer to Check for Intermittent Problems 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