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Home >> Nissan-Datsun >> 1992 >> Sentra SE-R >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Self-Diagnostic System >> Single Led System >> Notes
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Single Led System: Notes

Self-diagnostic system will operate in 2 modes which are manually selected using a screwdriver through access port on ECU. With ignition switch in ON position and engine not running, use screwdriver to turn switch fully clockwise. Wait at least 2 seconds. Turn screwdriver fully counterclockwise. Inspection light will begin to flash.

NOTE: Modes cannot be switched while engine is running. When ignition switch is turned to OFF position while in Mode II, ECU switches to Mode I.
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