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


CAUTION / NOTICE / HINT

HINT:

*: Use the GTS.


PROCEDURE

1.VEHICLE BROUGHT TO WORKSHOP
Result:
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2.CUSTOMER PROBLEM ANALYSIS
2.CUSTOMER PROBLEM ANALYSIS
Result:
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3.CONNECT GTS TO DLC3*
3.CONNECT GTS TO DLC3*
HINT:

If the display indicates a communication fault in the GTS, inspect the DLC3.

When any CAN communication system DTCs are output, perform troubleshooting on the CAN communication system first.


Result:
Proceed to
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4.CHECK DTC AND FREEZE FRAME DATA*
4.CHECK DTC AND FREEZE FRAME DATA*
a.

Check for DTCs.

Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>SFI SYSTEM>DTC CHECK / CLEAR

Powertrain > Engine and ECT > Trouble Codes
50001 234

b.

Check for freeze frame data.

Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>SFI SYSTEM>FREEZE FRAME DATA


HINT:

Record or print DTCs and freeze frame data if necessary.


Result:
Proceed to
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5.CLEAR DTC AND FREEZE FRAME DATA*
5.CLEAR DTC AND FREEZE FRAME DATA*
a.

Clear the DTCs and freeze frame data.

Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>SFI SYSTEM>DTC CHECK / CLEAR

Powertrain > Engine and ECT > Clear DTCs
50002 234

Result:
Proceed to
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NEXT

6.CONDUCT VISUAL INSPECTION
6.CONDUCT VISUAL INSPECTION
Result:
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7.SELECT CHECK MODE DIAGNOSIS*
7.SELECT CHECK MODE DIAGNOSIS*
a.

Switch the ECM from normal mode to check mode.

Powertrain > Engine and ECT > Utility
Tester Display
Check Mode
50005 234 1
HINT:

Refer to Check Mode Procedure.

Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>SFI SYSTEM>CHECK MODE PROCEDURE



Result:
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8.CONFIRM PROBLEM SYMPTOMS
8.CONFIRM PROBLEM SYMPTOMS
a.

Confirm problem symptoms.

HINT:

If the engine does not start, first perform the "Check DTC" procedure and "Conduct Basic Inspection" procedure below.



Result:
Result Proceed to
Malfunction does not occur A
Malfunction occurs B



A

9.SIMULATE SYMPTOMS

B

10.CHECK DTC*
9.SIMULATE SYMPTOMS
HINT:

Refer to Symptom Simulation.

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING


Result:
Proceed to
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NEXT

10.CHECK DTC*
10.CHECK DTC*
a.

Check for DTCs.

Powertrain > Engine and ECT > Trouble Codes
50001 234
HINT:

Refer to DTC Check / Clear.

Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>SFI SYSTEM>DTC CHECK / CLEAR



Result:
Result Proceed to
DTCs are output A
DTCs are not output B



A

11.REFER TO DTC CHART

B

12.CONDUCT BASIC INSPECTION
11.REFER TO DTC CHART
HINT:

Refer to Diagnostic Trouble Code Chart.

Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>SFI SYSTEM>DIAGNOSTIC TROUBLE CODE CHART


Result:
Proceed to
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NEXT

12.CONDUCT BASIC INSPECTION
12.CONDUCT BASIC INSPECTION
a.

Conduct basic inspection.

HINT:

Refer to Basic Inspection.

Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>SFI SYSTEM>BASIC INSPECTION



Result:
Result Proceed to
Malfunctioning parts not confirmed A
Malfunctioning parts confirmed B



A

13.REFER TO PROBLEM SYMPTOMS TABLE

B

17.CONDUCT PARTS INSPECTION
13.REFER TO PROBLEM SYMPTOMS TABLE
HINT:

Refer to Problem Symptoms Table.

Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>SFI SYSTEM>PROBLEM SYMPTOMS TABLE


Result:
Result Proceed to
Malfunctioning circuit confirmed A
Malfunctioning parts confirmed B



A

14.CHECK ECM POWER SOURCE CIRCUIT

B

17.CONDUCT PARTS INSPECTION
14.CHECK ECM POWER SOURCE CIRCUIT
a.

Check the ECM power source circuit.

HINT:

Refer to ECM Power Source Circuit.

Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>SFI SYSTEM>ECM Power Source Circuit



Result:
Proceed to
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NEXT

15.CONDUCT CIRCUIT INSPECTION
15.CONDUCT CIRCUIT INSPECTION
Result:
Result Proceed to
Malfunction not confirmed A
Malfunction confirmed B



A

16.CHECK FOR INTERMITTENT PROBLEMS

B

18.IDENTIFY PROBLEM
16.CHECK FOR INTERMITTENT PROBLEMS
a.

Check for intermittent problems.

HINT:

Refer to Check for Intermittent Problems.

Click hereEngine / Hybrid System>2ZR-FE ENGINE CONTROL>SFI SYSTEM>CHECK FOR INTERMITTENT PROBLEMS



Result:
Proceed to
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NEXT

17.CONDUCT PARTS INSPECTION
17.CONDUCT PARTS INSPECTION
Result:
Proceed to
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NEXT

18.IDENTIFY PROBLEM
18.IDENTIFY PROBLEM
Result:
Proceed to
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19.ADJUST AND/OR REPAIR
19.ADJUST AND/OR REPAIR
Result:
Proceed to
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20.CONDUCT CONFIRMATION TEST
20.CONDUCT CONFIRMATION TEST
Result:
Proceed to
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END