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 359 (POWER STEERING SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC C0545 (WITH LNF)CIRCUIT/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 2010 Chevrolet HHR. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the harness connector X3 at the PSCM.
- Ignition OFF, test for 2-20 Ξ© between the signal circuit terminal 4 and the signal circuit terminal 2.
- If not within the specified range, test the signal circuits for a short to ground or an open/high resistance. If circuits test normal, replace the steering column.
- Ignition OFF, test for 100-500 Ξ© between the signal circuit terminal 8 and the signal circuit terminal 1.
- If not within the specified range, test the signal circuits for a short to ground or an open/high resistance. If circuits test normal, replace the steering column.
- Ignition OFF, test for 300-1000 Ξ© between the signal circuit terminal 7 and the signal circuit terminal 1.
- If not within the specified range, test the signal circuits for a short to ground or an open/high resistance. If circuits test normal, replace the steering column.
- Ignition OFF, test for 50-200 Ξ© between the signal circuit terminal 6 and the signal circuit terminal 1.
- If not within the specified range, test the signal circuits for a short to ground or an open/high resistance. If circuits test normal, replace the steering column.
- Ignition OFF, test for 200-800 Ξ© between the signal circuit terminal 5 and the signal circuit terminal 1.
- If not within the specified range, test the signal circuits for a short to ground or an open/high resistance. If circuits test normal, replace the steering column.
- Ignition OFF, test for greater than 1.0 MΞ© between the signal circuit terminal 2 and the signal circuit terminal 1.
- If less than the specified range, test the signal circuits for a short to ground or an open/high resistance. If circuits test normal, replace the steering column.
- Ignition OFF, test for greater than 1.0 MΞ© of resistance between the signal circuit terminal 1 and ground.
- If less than the specified range, test the signal circuit for a short to ground. If circuits test normal, replace the steering column.
- Ignition OFF, test for greater than 1.0 MΞ© between the signal circuit terminal 2 and ground.
- If less than the specified range, test the signal circuit for a short to ground. If circuits test normal, replace the steering column.
- If all circuits test normal, 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:
- 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.