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Home >> Chevrolet >> 2012 >> Volt >> Repair and Diagnosis >> External Pages >> Different car >> Section 48 (Power Door Lock System And Release Systems) >> Diagnostic Information and Procedures >> DTC P169D >> Circuit/System Testing
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Circuit/System Testing

WARNING: This page is about a different car, the 2011 Chevrolet Volt. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the S117 refuel request switch.
  2. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 1 and ground.
    • If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
  3. Verify the scan tool Refuel System Request parameter is Inactive.
    • If not the specified value, test the signal circuit terminal 2 for a short to voltage. If the circuit tests normal, replace the K114B hybrid powertrain control module 2.
  4. Install a 2 A fused jumper wire between the signal circuit terminal 2 and the B+ circuit terminal 1. Verify the scan tool Refuel System Request parameter is Active.
    • If not the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K114B hybrid powertrain control module 2.
  5. If all circuits test normal, test or replace the S117 refuel request switch.
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