Transmission will not shift to fourth gear, and overdrive has no voltage?

2000 TOYOTA CRESSIDA

44,455 MILES • 2.0L • 6 CYL • 2WD • AUTOMATIC

RODWAN

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I have 1G FE engine Automatic transmission the gear won't shift into the fourth gear the overdrive button hasn't got any Voltage.
How can I rewire It and where?

Jul 23, 2022 at 1:57 PM

STRAILER

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We need to check for codes, here is a guide that will help:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Also, have you checked the fuses? This guide will help with that and the fuse location or in the diagrams below along with the wiring diagrams for the transmission so you can see how the system works:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Check out the diagrams (below). Please let us know what happens.

Images (Click to enlarge)

Jul 24, 2022 at 10:39 AM