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 MANUALSMERCURY2010MARINER HYBRID, AWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 968 (CRUISE CONTROL SYSTEM)DIAGNOSTIC TESTSSPEED CONTROLPINPOINT TESTSPINPOINT TEST E: A SINGLE SPEED CONTROL BUTTON IS INOPERATIVEPINPOINT TEST E: A SINGLE SPEED CONTROL BUTTON IS INOPERATIVE
2010 Mercury Mariner Hybrid, AWD
Pinpoint Test E: A Single Speed Control Button Is Inoperative
2010 Mercury Mariner Hybrid, AWDSECTION Pinpoint Test E: A Single Speed Control Button Is Inoperative
WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
Use the correct probe adaptor(s) when making measurements. Failure to use the correct probe adaptor(s) may damage the connector.
- E1 CHECK THE SPEED CONTROL SWITCH
- Key in OFF position.
- Disconnect: Speed Control Actuator C122
- Measure the resistance between the speed control actuator C122-5, circuit 151 (LB/BK), harness side and the speed control actuator C122-6, circuit 848 (DG/OG), harness side while pressing the speed control switch as follows:
Speed Control Switch Resistance Value COAST Between 114 and 126 ohms SET/ACCEL Between 646 and 714 ohms RESUME Between 2,090 and 2,310 ohms OFF Less than 5 ohms No switches pressed Infinite - Are the speed control switch resistance values OK?
- YES : INSTALL a new speed control actuator. REFER to Speed Control Actuator . TEST the system for normal operation.
- NO : INSTALL a new speed control switch. REFER to Speed Control Switch . TEST the system for normal operation.
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.