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 TO: GENERATOR OVERSPEEDTEST PROCEDURE
2010 Mercury Mariner Hybrid, AWD
Test Procedure
2010 Mercury Mariner Hybrid, AWDSECTION Test Procedure
- TO1 CHECK FOR CORRECT GENERATOR RPM NOTE: Refer to the table at the beginning of this pinpoint test for correct generator to engine RPM correlations.
- Clear the TCM DTCs.
- Access the TCM and monitor the G_SPEED and RPM_TCM PIDs.
- Place gear selector lever in PARK.
- Ignition ON, engine running.
- Record the generator RPM at different engine speeds.
Does the generator RPM correspond with the engine RPM in the table?
Yes No GO to TO2. INSTALL a new transaxle assembly. REFER to the AUTOMATIC TRANSAXLE/TRANSMISSION - 6F35 . - TO2 CHECK FOR DIAGNOSTIC TROUBLE CODES (DTCS)
Is DTC P0C2F present?
Yes No GO to PINPOINT TEST TP . Unable to duplicate or identify the concern at this time.
RETURN to Symptom Charts, to continue diagnosis.
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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.