Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Pontiac >> 2008 >> Grand Prix Base >> Repair and Diagnosis >> Electrical >> Charging Systems >> Battery, Charging System And Starting System >> Diagnostic Information and Procedures >> DTC B1327 >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the affected module.
  2. Ignition OFF, test for less than 1.0 ohm of resistance between the ground circuit and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Ignition ON, measure between the Battery Positive Voltage circuit and ground. The readings should not differ by more than 2 volts than the battery terminal voltage.
    • If greater than the specified value, test the Battery Positive Voltage circuit for a short to ground or an open/high resistance.
  4. If the circuit tests normal, replace the affected module.
scientia non olet · About Mike's Workshop Manuals