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Home >> Cadillac >> 2003 >> Seville SLS >> Repair and Diagnosis >> Electrical >> Charging Systems >> Charging System >> Diagnostic Tests >> DTC P0621: Generator L-Terminal Circuit >> Conditions For Setting DTC

Conditions For Setting DTC

During the key ON test, the PCM detects a high signal voltage on the generator turn on signal circuit for at least 5 seconds, or during the RUN test, the PCM detects a low signal voltage on the generator turn on signal circuit for at least 15 seconds.