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 MANUALSPONTIAC2006G6 GTP, 2D COUPE, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1428 (POWER STEERING SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC C0545CIRCUIT/SYSTEM TESTING
2006 Pontiac G6 GTP, 2D Coupe, Standard
Circuit/System Testing
2006 Pontiac G6 GTP, 2D Coupe, StandardSECTION Circuit/System Testing
WARNING: This page is about a different car, the 2012 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
C0545 00
- Disconnect the X3 harness connector at the power steering module assembly.
- Connect the EL-47564Β test harness Power Steering Control Module (PSCM) Test Harness.
- Ignition OFF, test for less than 2 Ξ© between the low reference circuit terminal E and ground.
- If greater than the specified range, replace the power steering control module.
- Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal B and ground.
- If less than the specified range, replace the power steering control module.
- Install a 3A fused jumper wire between the signal circuit terminal F and the 5V reference circuit terminal B. Verify the scan tool Torque Sensor Signal 1 is greater than 4.8V.
- If less than the specified value, replace the power steering control module.
- Install a 3A fused jumper wire between the signal circuit terminal C and the 5V reference circuit terminal B. Verify the scan tool Torque Sensor Signal 2 is greater than 4.8V.
- If less than the specified value, replace the power steering control module.
- If all circuits test normal, test or replace the steering column.
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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.