Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2011 Chevrolet VoltFACTORY OEM SERVICE PROCEDURE
Circuit/System Testing
- The control module location on powertrain high speed GMLAN serial data circuits
- The control module B+, ignition, ground, communication enable and serial data circuit terminals
- Ignition OFF, disconnect the harness connector at the K114B hybrid powertrain control module 2.
- Test for less than 10 Ξ© between each ground circuit terminal and ground.
- If greater than the specified range, test the ground circuit for an open/high resistance.
- If equipped, ignition ON, verify that a test lamp illuminates between each B+ circuit terminal and ground.
- If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If the circuit fuse is open, test the control circuits of the K114B hybrid powertrain control module 2 for a short to ground. If the circuits test normal, replace the K114B hybrid powertrain control module 2.
- If equipped, ignition ON, verify that a test lamp illuminates between each ignition circuit terminal and ground.
- If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance. If the circuit fuse is open, test the control circuits of the K114B hybrid powertrain control module 2 for a short to ground. If the circuits test normal, replace the K114B hybrid powertrain control module 2.
- If equipped, ignition ON, verify that a test lamp illuminates between the wakeup circuit terminal and ground.
- If the test lamp does not illuminate, test the entire circuit, including the B+ circuit to the K9 body control module (BCM), for an open/high resistance or a short to ground. If the circuits test normal, replace the K9 BCM.
- Ignition OFF, disconnect the harness connector at the control module setting the DTC.
- Test for less than 1 Ξ© in each powertrain high speed GMLAN serial data circuit between the K114B hybrid powertrain control module 2 and the control module setting the DTC.
- If greater than the specified range, test the serial data circuit for an open/high resistance between the K114B hybrid powertrain control module 2 and the control module setting the DTC.
- If all circuits test normal, replace the K114B hybrid powertrain control module 2.
NOTE:
Use the schematic to identify the following:
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
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