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Home >> Saturn >> 2002 >> L100 >> Repair and Diagnosis >> External Pages >> Different car >> Section 111 (Battery, Charging System & Starting System) >> Diagnostic Tests >> DTC P0621: Generator Light L-Terminal Control Circuit >> Conditions For Setting DTC

Conditions For Setting DTC

WARNING: This page is about a different car, the 2003 Saturn LW300, 2003 Saturn LW200, 2003 Saturn L300, and 2003 Saturn L200. However, it is still accessible from the selected car via links, so may be relevant.

During key ON test, the ECM/PCM detects a high signal voltage on the generator turn on signal circuit for at least 5 seconds.

During the RUN test, the ECM/PCM detects a low signal voltage on the generator turn on signal circuit for at least 10 seconds.

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