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 MANUALSOLDSMOBILE2004BRAVADA AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1187 (ENGINE CONTROLS - 6.0L - ALTERNATIVE FUELS (INTRODUCTION))DESCRIPTION AND OPERATIONFUEL INJECTOR CONTROL MODULE DESCRIPTIONCOMMUNICATION CIRCUITSFICM DIAGNOSTIC CIRCUIT
2004 Oldsmobile Bravada AWD
FICM Diagnostic Circuit
2004 Oldsmobile Bravada AWDSECTION FICM Diagnostic Circuit
WARNING: This page is about a different car, the 2004 GMC Sierra and 2004 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
The PCM monitors the FICM diagnostic circuit in order to set FICM related DTCs. The FICM diagnostic circuit is a 5-volt circuit that is pulse width modulated by the FICM in order to communicate diagnostic information to the PCM.
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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.