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 MANUALSTOYOTA1986PICKUP BASE, 22-RTE, R151FREPAIR AND DIAGNOSIS (SINGLE PAGE)ELECTRICALCHARGING SYSTEMSALTERNATOR & REGULATOR - NIPPONDENSOTESTINGON-VEHICLELOAD TEST
1986 Toyota Pickup Base, 22-RTE, R151F
Load Test
1986 Toyota Pickup Base, 22-RTE, R151FSECTION Load Test
Start engine. Turn on high beam headlights and place heater control on "HI". Run engine at 2000 RPM and check amperage. Ammeter should read more than 30 amps. If reading is less, repair or replace alternator.
NOTE:
If reading is low due to a fully charged battery, it may be necessary to crank engine with coil disconnected for about 15 seconds to partially discharge battery.
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.