Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Chevrolet >> 2005 >> Impala LS >> Repair and Diagnosis >> External Pages >> Different car >> Section 816 (Battery, Charging System And Starting System) >> Diagnostic Information and Procedures >> DTC P0562 >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2008 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connectors at the ECM.
  2. Ignition OFF, test for less than 3.0 ohms between the ground circuit X2 terminal 73 and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Ignition ON, verify a test lamp illuminates between the Ignition 1 signal circuit X1 terminal 19 and ground.
    • If the test lamp did not illuminate, test the Ignition 1 for a short to ground or an open/high resistance.
  4. If the circuits test normal, replace the ECM.
scientia non olet · About Mike's Workshop Manuals