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 389 (HIGH VOLTAGE TRACTION BATTERY)
2010 Mercury Mariner Hybrid, AWD
Section 389 (High Voltage Traction Battery)
2010 Mercury Mariner Hybrid, AWDSECTION Section 389 (High Voltage Traction Battery)
WARNING: This page is about a different car, the 2006 Mercury Mariner and 2006 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Description And Operation
- Diagnosis And Testing
- High-Voltage Traction Battery
- Notes
- Special Tool(s)
- Inspection and Verification
- Traction Battery Control Module (TBCM) Diagnostic Trouble Code (DTC) Index
- Symptom Table
- Notes
- Pinpoint Test A: No Communication With The Traction Battery Control Module (TBCM)
- Pinpoint Test B: The High Voltage Traction Battery (HVTB) Is Noisy
- Pinpoint Test C: Radio Interference
- Pinpoint Test D: DTC P0A7E - Hybrid Battery Pack Over Temperature
- Pinpoint Test E: DTCs P0A81, P0A96 - Hybrid Battery Pack Cooling Fans 1 And 2 Control Circuits
- Pinpoint Test F: DTCs P0A8B, P0A8D, P0A8E - 14 Volt Power Module System Voltage
- Pinpoint Test G: DTC P0A27 - Hybrid Battery Power Off Circuit
- Pinpoint Test H: DTC C1862 - Contactor Circuit Failure
- Pinpoint Test I: DTC P0AA6 - Hybrid Battery Voltage System Isolation Fault
- Pinpoint Test J: DTC P0A1F - Battery Energy Control Module Has Internal Errors
- Pinpoint Test K: DTC P0A7D - Hybrid Battery Pack State Of Charge Low
- Pinpoint Test L: DTC B1016 - Jump Start Control Module Fault
- Pinpoint Test M: DTC P2533 - Ignition Switch Run/Start Position Circuit
- Pinpoint Test N: DTC B1143 - Excessive Battery Contactor Close Requests
- Component Tests
- High-Voltage Traction Battery
- General Procedures
- Removal And Installation
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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.