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.
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HOMESERVICE MANUALSCHEVROLET2008HHR LT, 2.4 P, AUTOMATICREPAIR AND DIAGNOSISSTEERINGPOWER STEERING SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESDTC C0460CIRCUIT/SYSTEM TESTING
2008 Chevrolet HHR LT, 2.4 P, Automatic
Circuit/System Testing
2008 Chevrolet HHR LT, 2.4 P, AutomaticSECTION Circuit/System Testing
- Ignition OFF, disconnect the X2 harness connector at the PSCM.
- Ignition OFF, test for 10-200 ohms of resistance between terminal 1 and terminal 3.
- If not within the specified range, test the exiting circuit and the exiting ground circuit for an open/high resistance or a short. If the circuits test normal, replace the electric power steering (EPS) motor.
- Ignition OFF, test for 3K-10K ohms of resistance between terminal 6 and terminal 3.
- If not within the specified range, test the SIN circuit and the exciting ground circuit for an open/high resistance or a short. If the circuits test normal, replace the EPS motor.
- Ignition OFF, test for 6K-20K ohms of resistance between terminal 5 and terminal 3.
- If not within the specified range, test the COS circuit and the exciting ground circuit for an open/high resistance or a short. If the circuits test normal, replace the EPS motor.
- Ignition OFF, test for greater than 1M ohms of resistance between terminal 3 and the motor flange.
- If less than the specified value, test the exciting ground circuit for a short to ground. If the circuit tests normal, replace the EPS motor.
- If all circuits test normal, test or replace the PSCM.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.