CAUTION: These tests must be performed within 3 to 5 seconds of application of power to avoid burning out the coil.

Remove the terminal "C" nut and disconnect the field coil lead wire from terminal "C". Clip ground to terminal "C" and the main body of the starter, connect the battery to the magnetic switch (terminal No. 50). Ensure that the clutch pinion gear moves outward. See Fig 1.
Disconnect the negative lead from terminal "C". See Fig 2. Verify that the pinion gear remains out.
Disconnect the negative lead from the switch body. See Fig 3. Verify that the clutch pinion gear returns inward.
Connect the lead wire to terminal "C" with the terminal "C" nut. Tighten the nut to specification. See TORQUE SPECIFICATIONS .
Secure the starter in a vise or equivalent to prevent it from rotating. Clip battery negative to the main body of the starter. Ensuring these leads are not grounded, connect a jumper wire from terminal No. 30 to terminal No. 50. Connect an ammeter in series with battery positive to terminal No. 30. See Fig 4. Verify the current is within specification of 90 amps with 11.5 volts or less.

Fig 1: Illustrating Testing Setup For Step 1

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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.

Safety Warning

Starter Assembly