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 MANUALSCHEVROLET2009TAHOE BASE, 4.8 CREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 254 (HYBRID ENGINE ELECTRICAL SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDTC P0AFBTYPICAL SCAN TOOL DATA
2009 Chevrolet Tahoe Base, 4.8 C
Typical Scan Tool Data
2009 Chevrolet Tahoe Base, 4.8 CSECTION Typical Scan Tool Data
WARNING: This page is about a different car, the 2010 GMC Yukon, 2010 Chevrolet Tahoe, and 2010 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
HPCM 300V Circuit - APM
| Circuit | Short to Ground | Open | Short to Voltage |
|---|---|---|---|
| Operating Conditions:
Engine running. Parameter Normal Value: 300.0 Volts |
|||
| HVDC+ | 300.0 Volts | 300.0 Volts | - |
| HVDC- | 300.0 Volts | 300.0 Volts | - |
High Battery Voltage - ACCM
| Circuit | Short to Ground | Open | Short to Voltage |
|---|---|---|---|
| Operating Conditions:
Engine running. Parameter Normal Value: 300.0 Volts |
|||
| HVDC+ | 300.0 Volts | 12.0 Volts | - |
| HVDC- | 300.0 Volts | 12.0 Volts | - |
RENDER: 1.0x
NO RELATED
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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.