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Home >> Geo >> 1996 >> Prizm Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes >> Circuit Tests >> DTC P1600 - Pcm Battery >> Circuit Description
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Circuit Description

Battery positive voltage is supplied to connector C1, terminal No. 1 of PCM with ignition on or off for use by PCM keep-alive memory. DTC P1600 will set when an open or short in back-up power source circuit occurs.

NOTE: If DTC P1600 is set, no other DTCs will be stored in PCM memory.