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Home >> Cadillac >> 1993 >> Allante >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Self-Diagnostic System >> Pcm Input Displays >> PI87: Low Coolant Level Switch
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PI87: Low Coolant Level Switch

Low Coolant Level Switch. This input comes to the PCM at pin "1B16". PI87 should be "HI" with sufficient coolant in the coolant overflow bottle and "LO" with low coolant level.