2NZ-FE ENGINE CONTROL SFI SYSTEM CHECK FOR INTERMITTENT PROBLEMS
- HINT:
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Inspect the vehicle ECM using check mode. Intermittent problems are easier to detect with the GTS when the ECM is in check mode. In check mode, the ECM uses 1 trip detection logic, which is more sensitive to malfunctions than normal mode (default), which uses 2 trip detection logic.
1.
Clear the DTCs.
Click hereEngine / Hybrid System>2NZ-FE ENGINE CONTROL>SFI SYSTEM>DTC CHECK / CLEAR
2.
Switch the ECM from normal mode to check mode using the GTS.
Click hereEngine / Hybrid System>2NZ-FE ENGINE CONTROL>SFI SYSTEM>CHECK MODE PROCEDURE
3.
Perform a simulation test.
Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING
4.
Check and wiggle the harness(es), connector(s) and terminal(s).