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 MANUALSMERCURY2010MOUNTAINEER 2WD V6-4.0LREPAIR AND DIAGNOSISSTARTING AND CHARGINGBATTERYTESTING AND INSPECTIONPINPOINT TESTS
2010 Mercury Mountaineer 2WD V6-4.0L
Pinpoint Tests
2010 Mercury Mountaineer 2WD V6-4.0LSECTION Pinpoint Tests
Pinpoint Test
Pinpoint Test A: Battery Condition Test
Normal Operation
Battery condition is determined by measuring battery terminal voltage after a specific discharge current is applied for a specified time period.
This pinpoint test is intended to diagnose the following:
- Battery charge
- Battery
PINPOINT TEST A: BATTERY CONDITION TEST
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A1 TEST THE BATTERY CONDITION
NOTE: A red test-eye indicates the battery is discharged, not necessarily defective.
NOTE: Failure to fully charge the battery before retesting may cause false readings.
- Verify the battery condition using the Micro 490 Digital Battery Analyzer.
- Is the battery OK?
Yes
If the meter reads GOOD BATTERY, RETURN the battery to service.
If the meter reads GOOD-RECHARGE, CHARGE the battery and RETURN it to service.
If the meter reads CHARGE & RETEST, fully CHARGE and RETEST the battery.
No
If the meter reads REPLACE BATTERY, INSTALL a new battery.
If the meter reads BAD CELL-REPLACE, INSTALL a new battery.
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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.