Lexus IS250 IS220d GSE20 ALE20 4GR-FSE ENGINE CONTROL SYSTEM


SFI SYSTEM - CHECK FOR INTERMITTENT PROBLEMS

  • HINT:
  • Inspect the vehicle's ECM using check mode. Intermittent problems are easier to detect with an intelligent tester 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.
Clear the DTCs.
Switch the ECM from normal mode to check mode using an intelligent tester .
Perform a simulation test .
Check and wiggle the harness(es), connector(s) and terminal(s) .
LEXUS IS250, IS220d / GSE20 ALE20
4GR-FSE ENGINE CONTROL SYSTEM
Lexus IS250 IS220d GSE20 ALE20
SFI SYSTEM