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 DIAGNOSISENGINE PERFORMANCETESTING & DIAGNOSISENGINE CONTROLS - PINPOINT TESTS - (HYBRID)PINPOINT TEST NC: IGNITION ENGINE SPEED INPUT CIRCUITTEST PROCEDURE
2010 Mercury Mariner Hybrid, AWD
Test Procedure
2010 Mercury Mariner Hybrid, AWDSECTION Test Procedure
- NC1 CONTINUOUS MEMORY DTC P0320: ERRATIC IGNITION NOTE: Verify all 2-way radio installations. Carefully follow the manufacturer's installation instructions regarding the routing of the antenna and voltage leads.
Are any concerns present?
Yes No REPAIR as necessary.
CLEAR the DTCs. REPEAT the self-test.GO to NC2. - NC2 NO START CONCERN
Is the customer complaint a no start concern?
Yes No GO to PINPOINT TEST A . GO to NC3. - NC3 INTERMITTENT CONCERNS
Is this an intermittent concern?
Yes No GO to PINPOINT TEST Z . GO to PINPOINT TEST JD .
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.