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Home >> Pontiac >> 2009 >> G6 Base, 2D Coupe >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Shift Interlock System >> Diagnostic Information and Procedures >> DTC B2705 >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector at the shift lock control solenoid.
  2. Ignition OFF, test for less than 1 ohm between the ground circuit terminal G and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance.
  3. Install a test lamp between the ground circuit terminal G and the control circuit terminal E.
  4. Ignition ON, command the shift lock solenoid command to Lock and Unlock with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.
    • If the test lamp is always ON, test the control circuit for short to voltage. If the circuit tests normal, replace the BCM.
    • If the test lamp is always OFF, test the control circuit for short to ground or an open/high resistance. If the circuit tests normal, replace the BCM.
  5. If the circuit tests normal, test or replace the shift lock control solenoid.
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