TSRM/MK4 Supra/Repair Manual
Repair ManualWiring Diagrams
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ST/Starting System11 / 13
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STARTER PERFORMANCE TEST — MK4 Supra Starting System, page 11
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ST–11 STARTING SYSTEM – STARTER Ohmmeter Continuity Terminal 50 P10598 2. DO HOLD–IN COIL OPEN CIRCUIT TEST Using an ohmmeter, check that there is continuity between terminal 50 and the switch body. If there is no continuity, replace the magnetic switch. Terminal 50 Terminal C Battery P10952 STARTER PERFORMANCE TEST NOTICE: These tests must be performed with in 3 to 5 seconds to avoid burning out the coil. 1. DO PULL–IN TEST (a) Disconnect the field coil lead wire from terminal C. (b) Connect the battery to the magnetic switch as shown. Check that the pinion gear moves outward. If the pinion gear does not move, replace the magnetic switch. Disconnect Terminal C Battery P10953 2. DO HOLD–IN TEST While connected as above with the pinion gear out, discon- nect the negative (–) lead from terminal C. Check that the pinion gear remains out. If the pinion gear returns inward, replace the magnetic switch. Disconnect Battery P10954 3. INSPECT CLUTCH PINION GEAR RETURN Disconnect the negative (–) lead from the starter body. Check that the pinion gear returns inward. If the pinion gear does not return, replace the magnetic switch. Terminal 30 Terminal 50 Battery Ammeter P10955 4. DO NO–LOAD PERFORMANCE TEST (a) Connect the battery and ammeter to the starter as shown. (b) Check that the starter rotates smoothly and steadily with the pinion gear moving out. Check that the ammeter shows the specified current. Specified current: 90 A or less at 11.5 V