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 DIAGNOSISBRAKESANTI-LOCK BRAKE SYSTEM, TRACTION CONTROL SYSTEM & STABILITY CONTROL SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESDTC C0035-C0050CIRCUIT/SYSTEM TESTING
2008 Chevrolet HHR LT, 2.4 P, Automatic
Circuit/System Testing
2008 Chevrolet HHR LT, 2.4 P, AutomaticSECTION Circuit/System Testing
It is recommended that Component Testing is performed before Circuit Testing when diagnosing wheel speed sensors.
- Ignition OFF, disconnect the harness connector at the EBCM.
- Ignition ON, test for 0 volts between the low reference circuit terminals of the appropriate sensor listed below and ground.
- LF Sensor circuit terminal 8
- RF Sensor circuit terminal 6
- LR Sensor circuit terminal 2
- RR Sensor circuit terminal 12
- If not the specified value, test the low reference circuit for a short to voltage. If the circuit tests normal, replace the EBCM.
- Test for 0 volts between the signal circuit terminals of the appropriate sensor listed below and ground.
- LF Sensor circuit terminal 9
- RF Sensor circuit terminal 5
- LR Sensor circuit terminal 3
- RR Sensor circuit terminal 11
- If not the specified value, test the signal circuit for a short to voltage. If the circuit tests normal, replace the EBCM.
- Ignition OFF, test for infinite resistance between the low reference terminals of the appropriate sensor listed below and ground.
- LF Sensor circuit terminal 8
- RF Sensor circuit terminal 6
- LR Sensor circuit terminal 2
- RR Sensor circuit terminal 12
- If not the specified value, test the low reference circuit for a short to ground. If the circuit tests normal, replace the EBCM.
- Test for infinite resistance between the following signal circuit terminals of the appropriate sensor listed below and ground.
- LF Sensor circuit terminal 9
- RF Sensor circuit terminal 5
- LR Sensor circuit terminal 3
- RR Sensor circuit terminal 11
- If not the specified value, test the signal circuit for a short to ground. If the circuit tests normal, replace the EBCM.
- Test for 850-1350 ohms between the wheel speed sensor circuit terminals of the appropriate sensor listed below.
- LF Sensor circuit terminals 8 and 9
- RF Sensor circuit terminals 5 and 6
- LR Sensor circuit terminals 2 and 3
- RR Sensor circuit terminals 11 and 12
- If not within the specified range, test the low reference and signal circuits for an open/high resistance. If the circuit tests normal, replace the wheel speed sensor.
- If all circuits test normal, replace the EBCM.
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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.