Check for Intermittent Problems

1GR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: CHECK FOR INTERMITTENT PROBLEMS

HINT
Techstream only:

Inspect the vehicle's ECM using check mode. Intermittent problems are easier to detect with the Techstream 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 DTCs DTC Check / Clear.

2. Switch the ECM from normal mode to check mode using the Techstream Check Mode Procedure.

3. Perform a simulation test.

4. Check and wiggle the harness(es), connector(s) and terminal(s).