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 DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 41 (ANTI-LOCK BRAKE SYSTEM, TRACTION CONTROL SYSTEM & STABILITY CONTROL SYSTEM)DIAGNOSTIC 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
WARNING: This page is about a different car, the 2008 Pontiac G5 and 2008 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the harness connector at the steering angle sensor.
- Test for less than 6 ohms between the low reference circuit terminal 6 and ground.
- If greater than the specified range, test for an open/high resistance in the low reference circuit. If the circuit tests normal, replace the EBCM.
- Ignition ON, test for 11.8-12.2 volts between the 12-volt reference circuit terminal 1 and ground.
- If less than the specified range, test the 12-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the EBCM.
- If greater than the specified range, test the 12-volt reference circuit for a short to voltage. If the circuit tests normal, replace the EBCM.
- Ignition OFF, disconnect the harness connector at the EBCM.
- Ignition ON, test for 0 volts between the communication circuit terminal 18 and ground.
- If greater than the specified value, test the communication circuit for a short to voltage.
- Test for 0 volts between the communication circuit terminal 19 and ground.
- If greater than the specified value, test the communication circuit for a short to voltage.
- Ignition OFF, test for infinite resistance between the communication circuit terminal 18 and ground.
- If not the specified value, test the communication circuit for a short to ground.
- Test for infinite resistance between the communication circuit terminal 19 and ground.
- If not the specified value, test the communication circuit for a short to ground.
- Test for less than 1 ohm between the communication circuit terminals 18 and terminal 3.
- If greater than the specified range, test the communication circuit for an open/high resistance.
- Test for less than 1 ohm between the communication circuit terminals 19 and terminal 4.
- If greater than the specified range, test the communication circuit for an open/high resistance.
- Test for infinite resistance between the communication circuit 18 and the communication circuit 19.
- If not the specified value, test the communication circuits for a short together.
- If all circuits test normal, replace the Steering Angle Sensor.
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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.