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Home >> Saturn >> 2009 >> Sky Red Line, Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 98 (Battery, Charging System And Starting System) >> Diagnostic Information & Procedures >> DTC P2501 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2008 Saturn Sky and 2008 Pontiac Solstice. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the generator.
  2. Ignition ON, test for less than 1 volt between the generator turn on signal circuit terminal B and ground.
    • If greater than the specified range, test the generator turn on signal circuit for a short to voltage. If the circuit tests normal, replace the ECM.