{"version":"1.0","provider_name":"Flagship One Blog","provider_url":"https:\/\/www.fs1inc.com\/blog","author_name":"FlagshipOne","author_url":"https:\/\/www.fs1inc.com\/blog\/author\/flagship1inc\/","title":"1990 Toyota Corolla ECM & PCM Relearn and Replacement Guide Procedure - Flagship One Blog","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"Miu0UGn9TQ\"><a href=\"https:\/\/www.fs1inc.com\/blog\/1990-toyota-corolla-pcm-replacement-guide\/\">1990 Toyota Corolla ECM &#038; PCM Relearn and Replacement Guide Procedure<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.fs1inc.com\/blog\/1990-toyota-corolla-pcm-replacement-guide\/embed\/#?secret=Miu0UGn9TQ\" width=\"600\" height=\"338\" title=\"&#8220;1990 Toyota Corolla ECM &#038; PCM Relearn and Replacement Guide Procedure&#8221; &#8212; Flagship One Blog\" data-secret=\"Miu0UGn9TQ\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/www.fs1inc.com\/blog\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","thumbnail_url":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2026\/07\/1990-toyota-corolla-pcm-location-diagram.webp","thumbnail_width":300,"thumbnail_height":300,"description":"If a 1990 Toyota Corolla shows no\u2011start or erratic shifting, wait 90 seconds after locking the ignition and disconnecting the battery, then follow the relearn steps to restore engine and powertrain control modules for reliable operation."}