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Home >> Nissan-Datsun >> 1994 >> Sentra SE-R, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 2.0L >> Self-Diagnostic System >> Electronic Concentrated Control System (ECCS) >> Intermittent Failures
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Intermittent Failures

Intermittent failures may cause CHECK ENGINE light (if equipped) to flicker or illuminate and go out after intermittent fault goes away. However, corresponding trouble code will be retained in ECM memory. If related fault does not reoccur within 50 ignition cycles, related trouble code will be erased from ECM memory. Intermittent failures may be caused by sensor, connector or wiring problems. See INTERMITTENTS in TESTS W/O CODES article in the ENGINE PERFORMANCE section.

NOTE: Follow diagnostic routine when testing engine control systems. See DIAGNOSTIC ROUTINE  table for correct order of procedure.
DIAGNOSTIC ROUTINE

Procedure Order
F - Basic Testing Procedures 1st
Entering Diagnostics 2nd
Retrieving Trouble Codes 3rd
Symptoms (1) 4th
Intermittents (1) 5th
(1) See TESTS W/O CODES article in the ENGINE PERFORMANCE section.
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