Question about 2007 Scion tC Coupe

2 Answers

Why won't it start?

Car won't start. No crank or turn over whatsoever. Just recently replaced clutch assembly and starter assembly. Problem is intermittent. Can roll start because manual.

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  • Scion Master
  • 2,899 Answers

Try this procedure:
Check the battery like this:
Turn on the headlights, then try to start the car.
If the headlights do not dim or go out, then the battery is likely ok.
Check that the battery cable plus post, goes to the starter, Minus post to a good ground, like the engine.
If wiring is ok, then look at the starter solenoid for a good connection, and proper voltage at the starter.
Problem is most likely the Solenoid's bendix gear or starting relay, Have someone bang on the starter while you try to start the car. This usually works by dislodging the bendix gear..
Hope this helps.

Posted on Apr 06, 2015

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  • Scion Master
  • 21,873 Answers

There should be a clutch safety switch that prevents you from cranking the engine with the clutch engaged.
Have you checked the switch for power ?

Posted on Apr 26, 2013

Testimonial: "Where is it located? All the replacements was done by a local autoshop and I'm slowly losing trust in them..."

  • 1 more comment 
  • Ronel Trinidad Apr 27, 2013

    Also will I be able to check it without the key in ignition?

  • Ronel Trinidad Apr 27, 2013

    Where is it located? All the replacements was done by a local auto shop and I'm slowly losing trust in them...

  •  Stephen
    Stephen Apr 28, 2013

    I don't have a shop manual for that model. It looks like the switch would be mounted on the top of the clutch pedal much like the brake light switch. The engine computer and a relay are also involved in the circuit.

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1 Answer

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my guess;1
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So it's a no crank condition? Do dash lights, gauges, and everything else work when the car won't crank over? If so, buy a cheap $5.00 testlight, and when the car won't crank, pull the small black wire off the starter solenoid. While someone holds the key in start (cranking) position and clutch pedal depressed, see if the black wire has power as it should. (Ground the testlight and just touch the wire's end terminal. If powered, the testlight will light up.) If power there, then the starter solenoid is failing. Toyota starters are very good units, but the solenoid's internal contacts get old and pitted.
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Now find a grounding place for testlight under the dash. When car won't crank, check for power coming out of ignition switch on the black wire with white stripe. This is the start wire for the starter solenoid. Key must be in crank position. Wire shoud be powered-ignition switch is working. If no power, switch is failing. You can do the same for the clutch start switch-it's a simple switch, that when clutch is depressed switch is closed and passes power on from ignition switch to the starter relay (thus allowing power to the starter solenoid). Black wire, red stripe-this is wire from clutch switch to starter relay. When key is in crank, clutch depressed, this wire should be hot.
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You could be right, a quick test to see if it the switch or starter would be to have someone hold the key in the crank postion with clutch pedal down and see if the small wire at starter has power, if it has power then its not the clutch switch but rather the starter itself. or you can unplug the safty switch and jump the connector and see if it starts, if it does then its the switch if not then it could be the starter, check starter for power as i listed above and if theres power replace the starter. hope this is helpful. good day.

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