The starting system problems on Toyotas might because of an electrical or mechanical problems since the system 
combines electrical and mechanical components. The starting system worked by changing electrical energy from the battery to mechanical energy in the starting motor.
Herein we provide you with a table contains specific symptoms of starting system problems such as the engine won’t crank, slowly cranks, the starter keeps running, the starter spins but the engine won’t crank, the starter doesn’t engage or disengage properly. It includes how to diagnose and perform several tests related to starting systems. And here is the table:
| Symptoms | Possible Cause | Action Needed |
| engine won’t crank | dead battery, melted fusible link, loose connections, faulty ign switch,faulty magnetic switch, mechanical problems in engine | check battery, replace fusible link, clean and tighten connections, check or replace switch |
| engine cranks slowly (too short) | weak battery, corroded connections, faulty starter motor, mechanical problems with engine or starter | check battery and charge, clean connection, test starter, check engine and starter |
| starter keeps running | damaged pinion or ring gear, faulty plunger in magnetic switch, faulty ignition switch or control circuit, binding ignition key | check gears for wear or damage, test starter pull in and hold in coils, check switch and circuit components, check key for damage |
| starter spins but engine won’t crank | faulty over-running clutch, damaged or worn pinion gear or ring gear | check over-running clutch for proper operation, check gears for damage and wear |
| starter doesn’t engage/disengage | faulty magnetic switch, damaged or worn pinion gear or ring gear | bench test starter, check gears for damage and wear |
(source: toyota.com)
