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 MANUALSMERCURY2009MILAN PREMIER, 3.0 1, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 169 (INSTRUMENT CLUSTER SYSTEM)DIAGNOSIS AND TESTINGINSTRUMENT CLUSTERPINPOINT TEST R: THE SPEED CONTROL INDICATOR IS NEVER/ALWAYS ONTESTING
2009 Mercury Milan Premier, 3.0 1, AWD
Pinpoint Test R: The Speed Control Indicator Is Never/Always On: Testing
2009 Mercury Milan Premier, 3.0 1, AWDSECTION Testing
WARNING: This page is about a different car, the 2005 Mercury Montego, 2005 Ford Freestyle, and 2005 Ford Five Hundred. However, it is still accessible from the selected car via links, so may be relevant.
- R1 CHECK THE SPEED CONTROL OPERATION
- Test drive the vehicle and operate the speed control.
- Does the speed control operate correctly?
- Yes : GO to R2.
- No : REFER to SPEED CONTROL to continue diagnosis of the speed control system.
- R2 CARRY OUT THE INSTRUMENT CLUSTER SPEED CONTROL ACTIVE COMMAND USING THE DIAGNOSTIC TOOL
- Enter the following diagnostic mode on the scan tool: Instrument Cluster Active Command.
- Select the instrument cluster warning lamps and chime active command. Trigger the all lamps active command on and off. Observe the speed control indicator.
- Does the speed control indicator illuminate when triggered on and turn off when triggered off?
- Yes : GO to R3.
- No : GO to R4.
- R3 CHECK FOR CORRECT PCM OPERATION
- Disconnect all the PCM connectors.
- Check for:
- corrosion
- pushed-out pins
- Connect all the PCM connectors and make sure they seat correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
- Yes : INSTALL a new PCM. REFER to ELECTRONIC ENGINE CONTROLS . TEST the system for normal operation.
- No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
- R4 CHECK FOR CORRECT INSTRUMENT CLUSTER OPERATION
- Disconnect the instrument cluster connector.
- Check for:
- corrosion
- pushed-out pins
- Connect the instrument cluster connector and make sure it seats correctly.
- Operate the system and verify the concern is still present.
- Is the concern still present?
- Yes : INSTALL a new instrument cluster. REFER to INSTRUMENT CLUSTER . TEST the system for normal operation.
- No : The system is operating correctly at this time. The concern may have been caused by a loose or corroded connector.
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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.