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.
2004 Chrysler Crossfire AutomaticFACTORY OEM SERVICE PROCEDURE
4. O2 Heater Fused Engine Control Relay Output Circuit Open
Turn the ignition on.
Measure the voltage of the O2 Heater Fused Engine Control Relay Output circuit at the O2 Sensor harness connector.
Fig 1: Measuring Voltage Of O2 Heater Fused Engine Control Relay Output Circuit At O2 Sensor Harness Connector
Is the voltage above 10 volts?
- Yes >> Go To 5
- No >> Repair the O2 Heater Fused Engine Control Relay Output circuit for an open.
Factory Service Tools
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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.