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.
Pinpoint Test G: The Speed Control Indicator Lamp Is Always On
2005 Ford Taurus SEL, 4D SedanSECTION Pinpoint Test G: The Speed Control Indicator Lamp Is Always On
- G1 CHECK SPEED CONTROL actuator FOR SHORT TO GROUND
- Key in OFF position.
- Disconnect: Speed Control Actuator C122.
- Key in ON position.
- Is the indicator lamp illuminated?
- Yes : GO to G2.
- No : INSTALL a new speed control actuator. REFER to SPEED CONTROL ACTUATOR . TEST the system for normal operation.
- G2 CHECK CIRCUIT 203 (OG/LB) FOR SHORT TO GROUND
- Key in OFF position.
- Disconnect: Instrument Cluster C220.
- Measure the resistance between the speed control actuator C122 pin 1, circuit 203 (OG/LB), harness side and ground.
- Is the resistance greater than 10,000 ohms?
- Yes : INSTALL a new instrument cluster. REFER to INSTRUMENT CLUSTER . TEST the system for normal operation.
- No : REPAIR the circuit. TEST the system for normal operation.
RENDER: 1.0x
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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.