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How to reset the ECU on a 1989 Toyota truck 4×4

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-Why need to reset...?
-Disconnect Negative battery cable for 10 second then reconnect. Every thing should be reset.

Good Luck


Posted on May 18, 2015


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Posted on Jan 02, 2017

  • 1861 Answers

SOURCE: ecu locate in 1998 rav 4?

Under the glovebox, passenger side.

Posted on Dec 30, 2008

  • 1 Answer

SOURCE: 1989 toyota truck, Starts , runs perfect then

make sure your hose from the idle air control (IAC) valve, on the throttle intake, is not leaking. i just went through this myself. it is a small hose that connects to a nipple directly next to the thermostat housing, and the other end goes to the nipple of the IAC. you may not even notice a leak. if this doesnt fix it, the IAC is probably shot. also, make sure your coolant is topped off with the heater on before you do ANY of this. toyotas are seriously "coolant-dependent" trucks, and sometimes that is all that is needed. hope this helps


Carlsbad, CA

Posted on Jun 02, 2009

  • 89 Answers

SOURCE: how to reset ecu on toyota pickup?

Disconnecting the battery for 3-5 min will erase all stored adaptive memory on PCM.

Posted on Jun 15, 2012

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Is there a reset switch for my 1992 toyota camry

Here is a detailed solution on how to reset your 1992 camry;
1.Open the fuse panel cover in the driver's side footwell by pulling down on the fuse panel cover.
2.Locate the fuse for the electronic control unit, or ECU.
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