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Home >> Chevrolet >> 2007 >> Impala SS >> Repair and Diagnosis >> External Pages >> Different car >> Section 430 (Battery, Charging System And Starting System) >> Diagnostic Information and Procedures >> DTC C0899 (PSCM) >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2007 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.

C0899 03

  1. Measure and record the voltage at the battery terminals. With scan tool, observe the battery voltage signal parameter. Verify that battery terminal voltage and battery voltage signal readings do not differ more than 1 volt.
    • If more than 1 volt, test the battery positive voltage and ground circuits of the PSCM for an open/high resistance or replace the PSCM.
  2. Go to Charging System Test .
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