LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 1993 >> Corolla Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Introduction >> Self-Diagnostic System >> Intermittent Failures
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Intermittent Failures

Intermittent failures may cause Malfunction Indicator Light (MIL) to flicker or illuminate and go out after intermittent fault goes away. However, the corresponding trouble code will be retained in ECM memory on some trouble code applications. Not all trouble codes are retained in ECM memory. Intermittent failures may be caused by a sensor, connector or wiring related problem. Refer to INTERMITTENTS in the TESTS W/O CODES article.

NOTE: Test Mode (if equipped) and Normal Mode on self-diagnostics system are used for retrieving trouble code from ECM memory for system diagnosis. For information on different mode usage, see RETRIEVING TROUBLE CODES .
scientia non olet · About LEMON Manuals