Question about 1990 Toyota Corolla

2 Answers

We replaced aautomatic 3 speed transmission in a 1990 corolla, but we cannot get the car to start. None of the gauges work, radio, fan switch, nothing is getting an electric current to the inside of car. Battery is good, headlights work,flashers work. The car had been sitting for almost a year, but it started when we first tried it. Have reconnected everything in engine compartment. Could the inginition switch have gone bad and not letting current to dash and radio and fan ?

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  • vulcan982252 Oct 15, 2010

    I received an answer, they said it could be the switch or connection to fuse box, is their any other possiabilities ?

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  • Master
  • 642 Answers

First place to start looking is the bus fuses next to the battery(mounted on the positive pole). There are 3(some models only 2). Next check for power on the back of the ignition switch. Check the Black/red wire and the White. These 2 are the main supply to the ignition switch.

Posted on Oct 15, 2010

  • Rene Rossouw
    Rene Rossouw Oct 15, 2010

    After checking the previous and still not able to start the car do the following.
    With the ignition on ACC there should be power on the Blue/red wire as well as the previous 2 mentioned (in fact these 2 are permanently hot as long as the bus fuses are intact).
    With ignition at "On" position you will find power on black/orange, Blue red and Black/yellow. The Black/white is the starter wire. Connecting power to it will turn the starter motor. If these are correct there is nothing wrong with the ignition or its power supply.
    If you have any further queries leave a comment and I'll get back to you ASAP as this is where things get complicated.

  • Rene Rossouw
    Rene Rossouw Oct 15, 2010

    Photo of the bus fuse position. Flip the cover open to expose the links


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  • Toyota Master
  • 11,800 Answers

Yes, the ignition switch is the main suspect here, but you should also check the connections to the fuse box an the dash - the wiring harness might have been damaged/ unplugged when the gearbox has been insalled.

Posted on Oct 11, 2010

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