No crank no start

1992 LEXUS LS 400
180,000 MILES • 4.0L • V8 • 2WD • AUTOMATIC
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TIMMAHANEY
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  • 65 POSTS
I have been not able to start my car from the ignition, but I can from the starter relay switch.
May 31, 2018 at 9:48 PM
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PATENTED_REPAIR_PRO
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Remove the starter relay and then using a voltmeter or at least a 12 volt test light check the terminals in the empty socket for voltage. You should have 12 volts all the time on one terminal, then an additional with 12 volts when the key is on start.
If you have the one hot all the time but not the additional hot with key on start, check the fuse 7.5a ST.
Jun 1, 2018 at 7:45 AM
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TIMMAHANEY
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  • 65 POSTS
I have no voltage when my key is in the start position. Only the one that is always hot.
Jun 1, 2018 at 6:03 PM
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PATENTED_REPAIR_PRO
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Did you check the check the fuse 7.5a ST. ?
Jun 2, 2018 at 7:24 AM
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TIMMAHANEY
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Yes, I checked them all so just in case I did not get the right one and they were all good.
Jun 2, 2018 at 2:12 PM
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PATENTED_REPAIR_PRO
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Okay, then using your voltmeter make sure that fuse has voltage on both sides of it when the key is on start, then if so, move onto checking that wire from that fuse into and out of the neutral safety switch again with the key on start.
Jun 2, 2018 at 3:11 PM