{"id":535988,"date":"2026-07-18T23:34:37","date_gmt":"2026-07-19T03:34:37","guid":{"rendered":"https:\/\/www.fs1inc.com\/blog\/?p=535988"},"modified":"2026-07-18T23:34:37","modified_gmt":"2026-07-19T03:34:37","slug":"2002-toyota-highlander-pcm-replacement-guide","status":"publish","type":"post","link":"https:\/\/www.fs1inc.com\/blog\/2002-toyota-highlander-pcm-replacement-guide\/","title":{"rendered":"2002 Toyota Highlander Engine Computer Replacement and Programming"},"content":{"rendered":"<div class=\"container\">\n<section class=\"hero\">\n<div class=\"code-badge\">PCM<\/div>\n<h1>2002 Toyota Highlander Engine Computer Replacement and Programming<\/h1>\n<p class=\"hero-subtitle\">The powertrain control module in your 2002 Toyota Highlander manages fuel delivery, ignition timing, and emissions functions. When it fails, your vehicle may experience starting problems, erratic idle, illuminated warning lights, or complete shutdown. A malfunctioning unit often triggers diagnostic codes and can leave you stranded without warning.<\/p>\n<\/section>\n<div class=\"quick-summary\">\n<h2>Quick Summary<\/h2>\n<ul>\n<li>The factory wiring guide places the engine ECU within the instrument panel area<\/li>\n<li>Book time for module removal and installation on the 3.0L engine is 0.5 hours<\/li>\n<li>A separate relearn procedure requires an additional 0.5 hours of labor time<\/li>\n<li>Factory service bulletins address ECU flash reprogramming for applicable Toyota models<\/li>\n<li>Flagship One replacement units arrive pre-programmed to your vehicle identification number<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<p>When your 2002 Toyota Highlander starts acting up with rough running, unexpected warning lights, or no-start conditions, the engine computer may be a culprit worth investigating. The powertrain control module serves as the brain of your vehicle, coordinating signals from dozens of sensors to keep the 3.0L V6 running smoothly. Understanding what this component does, where it lives, and what happens when it fails can save you time and money at the repair shop. Whether you are diagnosing a persistent check-engine light or planning a module swap, having the right information helps you make confident decisions. Your Highlander relies on this computer for precise fuel metering, ignition timing, and emissions compliance, so a faulty unit affects drivability almost immediately. This guide walks through the module role, its location, programming requirements, common symptoms, and relevant factory bulletins so you know what to expect.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>What the PCM Does in a 2002 Toyota Highlander<\/h2>\n<p>The engine control module in your 2002 Toyota Highlander acts as the central processor for the 3.0L powertrain. It continuously reads input from sensors monitoring throttle position, oxygen content, coolant temperature, mass airflow, and crankshaft position, then adjusts fuel injector pulse width and ignition timing accordingly. Because this vehicle depends on precise electronic management for both performance and emissions compliance, a degraded or failed module typically produces noticeable drivability problems almost immediately. The unit also communicates with the transmission controller and manages evaporative emissions routines. When internal memory corrupts or circuit traces fail, you may notice everything from poor fuel economy to complete no-start situations. Finding <a href=\"https:\/\/www.fs1inc.com\/toyota-ecm-pcm-ecu-engine-computer\/highlander-engine-computers.html\">replacement engine computers for the Highlander<\/a> becomes necessary when diagnostics confirm the module itself has failed rather than a supporting sensor or wiring issue. Because the computer integrates so many functions, pinpointing its failure requires methodical testing rather than guesswork.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Where the PCM Is Located and What Replacement Involves<\/h2>\n<p>The factory wiring guide for your 2002 Toyota Highlander places the engine ECU within the instrument panel area. Accessing it typically involves removing trim panels on the passenger side to reach the module housing. According to published labor guides, removing and reinstalling the powertrain control module on the 3.0L engine requires 0.5 hours of book time. A separate relearn procedure following installation carries an additional 0.5 hours. The 2.4L variant lists slightly less time at 0.4 hours for both removal and reinstallation, but your 3.0L Highlander falls under the 0.5-hour category for each operation. Because the module sits behind interior trim, no under-hood disassembly is needed, though care should be taken with the wiring connectors to avoid damaging the terminal pins during removal. Always disconnect the battery before handling the computer to prevent voltage spikes from damaging the new or refurbished unit.<\/p>\n<figure style=\"margin:22px auto;text-align:center;max-width:720px\"><img decoding=\"async\" style=\"max-width:100%;height:auto;border:1px solid #e2e6ec;border-radius:8px\" src=\"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2026\/07\/2002-toyota-highlander-ecu-location-card.webp\" alt=\"2002 Toyota Highlander PCM location diagram\" loading=\"lazy\"\/><figcaption style=\"font-size:13px;color:#667085;margin-top:8px\">Typical PCM mounting area on the 2002 Toyota Highlander (reference).<\/figcaption><\/figure>\n<table style=\"width:100%;border-collapse:collapse;margin:18px 0;font-size:15px\">\n<tr>\n<th style=\"border:1px solid #d6dbe3;background:#f2f5f9;padding:9px 12px;text-align:left\">Operation<\/th>\n<th style=\"border:1px solid #d6dbe3;background:#f2f5f9;padding:9px 12px;text-align:left\">Configuration<\/th>\n<th style=\"border:1px solid #d6dbe3;background:#f2f5f9;padding:9px 12px;text-align:left\">Book Time<\/th>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">Engine Control Module Relearn<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">All configurations<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">0.5 hr<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">Engine Control Module R&amp;R<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">3.0L<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">0.5 hr<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">Engine Control Module R&amp;R<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">2.4L<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">0.4 hr<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">Powertrain Control Module R&amp;R<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">2.4L<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">0.4 hr<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">Powertrain Control Module R&amp;R<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">3.0L<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">0.5 hr<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">Powertrain Control Module Relearn<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">All configurations<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">0.5 hr<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<div class=\"info-section\">\n<h2>Programming Requirements After Replacement<\/h2>\n<p>After replacing the engine or powertrain control module on your 2002 Toyota Highlander, the factory procedure requires a relearn operation so the new computer synchronizes with the immobilizer and adapts to your vehicle sensor inputs. This relearn carries 0.5 hours of book time and typically requires a compatible scan tool to complete. Toyota service bulletins also outline ECU flash reprogramming procedures for applicable models, which may be necessary depending on the calibration level. When you choose <a href=\"https:\/\/www.fs1inc.com\/2002-toyota-highlander-3-0l-ecm-engine-computer-pcm-ecu-programmed-plug-play.html\">a VIN-programmed replacement unit<\/a> from Flagship One, the module arrives already coded to your vehicle identification number, meaning the relearn and reprogramming steps have already been performed. This eliminates the need for a dealer visit or specialized scan-tool equipment, letting you install the unit and get back on the road.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Symptoms of a Failing PCM<\/h2>\n<p>Common symptoms of a failing engine control module in your 2002 Toyota Highlander include no-start or extended cranking, intermittent stalling while driving, rough idle, and misfire codes that persist even after replacing spark plugs and coils. You may also encounter dead scan-tool communication, where a diagnostic scanner cannot establish a link with the computer. Some owners report erratic shifting or harsh gear changes, as the module also influences transmission behavior. A failing unit can illuminate the check-engine light and store codes ranging from internal processor faults to emissions monitors. In certain cases, a calibration issue may trigger catalyst efficiency code P0420 even when the catalytic converter is functioning properly. Because these symptoms overlap with sensor and wiring failures, confirming a module problem requires thorough diagnosis before replacement. Voltage irregularities from a weak alternator or corroded ground connections can mimic computer failure.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Factory Service Bulletins Worth Knowing<\/h2>\n<p>Toyota released several service bulletins relevant to engine computer reprogramming for applicable models. Bulletin SS002-01 covers the ECU flash reprogramming process in a revised format for 2001 and later applicable models. Bulletin EG041-05 addresses a calibration update for 2001 through 2003 Highlander models equipped with the 2AZ-FE engine, specifically targeting MIL illumination with DTC P0420 and or P0430; this bulletin is marked obsolete. Bulletin SS002-07 outlines the Techstream ECU flash reprogramming procedure for 2001 through 2008 applicable Toyota vehicles. While your 2002 Highlander with the 3.0L engine may not be directly covered by the 2AZ-FE-specific bulletin, the reprogramming procedure documents remain relevant if a flash update is needed during module service.<\/p>\n<table style=\"width:100%;border-collapse:collapse;margin:18px 0;font-size:15px\">\n<tr>\n<th style=\"border:1px solid #d6dbe3;background:#f2f5f9;padding:9px 12px;text-align:left\">Bulletin<\/th>\n<th style=\"border:1px solid #d6dbe3;background:#f2f5f9;padding:9px 12px;text-align:left\">Subject<\/th>\n<th style=\"border:1px solid #d6dbe3;background:#f2f5f9;padding:9px 12px;text-align:left\">What It Addresses<\/th>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><b>SS002-01<\/b><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">:SS002-01: 2001 &amp;amp; Later Applicable Models: ECU Flash Reprogramming Process (Revised)<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">&mdash;<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><b>EG041-05<\/b><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">:EG041-05: 01-03 Highlander (2AZ-FE): ECM Calibration Update: M.I.L. &#8216;ON&#8217; DTC P0420 and\/or P043<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">&mdash;<\/td>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><b>SS002-07<\/b><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">:SS002-07: 01-08 Applicable Toyota: Techstream ECU Flash Reprogramming Procedure<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">&mdash;<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<div class=\"info-section\">\n<h2>Protecting the PCM in Your 2002 Toyota Highlander<\/h2>\n<ul style=\"margin:14px 0 6px 0;padding-left:26px\">\n<li style=\"margin:10px 0;line-height:1.65\">Maintain a healthy charging system to prevent voltage fluctuations that stress the module<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Keep ground connections clean and tight to ensure stable electrical references<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Avoid jump-starting with vehicles of differing voltage systems to prevent spike damage<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Address illuminated warning lights promptly before minor issues cascade into module damage<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Inspect wiring connector seals during routine maintenance and replace any that are cracked or degraded<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Use a battery maintainer during extended storage periods to prevent low-voltage conditions<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<h2>Frequently Asked Questions<\/h2>\n<h3>Where is the engine computer located in a 2002 Toyota Highlander?<\/h3>\n<p>The factory wiring guide places the engine ECU within the instrument panel area. Access typically requires removing interior trim on the passenger side. Book time for removal and reinstallation on the 3.0L engine is 0.5 hours.<\/p>\n<h3>Does a replacement ECM need programming for the 2002 Toyota Highlander?<\/h3>\n<p>Yes, the factory procedure calls for a relearn operation after installation, which requires 0.5 hours of book time. Flagship One replacement units arrive pre-programmed to your vehicle identification number, eliminating the need for dealer programming.<\/p>\n<h3>What service bulletins apply to the 2002 Toyota Highlander engine computer?<\/h3>\n<p>Toyota issued bulletin SS002-01 for ECU flash reprogramming on 2001 and later applicable models, and SS002-07 for Techstream reprogramming on 2001 through 2008 vehicles. A bulletin specific to the 2AZ-FE engine addressing P0420 and P0430 codes is marked obsolete.<\/p>\n<\/div>\n<div class=\"info-section\">\n<p>If diagnostics confirm your 2002 Toyota Highlander needs a replacement engine computer, you have two main paths: a new dealer unit requiring programming, or a pre-programmed refurbished unit from Flagship One. The latter arrives coded to your VIN, saving the 0.5-hour relearn and eliminating the need for a specialized scan tool. For a vehicle approaching two decades old, a quality refurbished module often provides the most practical balance of cost and reliability. Matching the exact part number to your original unit ensures proper fitment and function.<\/p>\n<figure style=\"margin:22px auto;text-align:center;max-width:720px\"><img decoding=\"async\" style=\"max-width:100%;height:auto;border:1px solid #e2e6ec;border-radius:8px\" src=\"https:\/\/www.fs1inc.com\/media\/wysiwyg\/googleshop\/toyotapanic\/toyota-pcm-panic-1.jpg\" alt=\"Refurbished VIN-programmed PCM for the 2002 Toyota Highlander\" loading=\"lazy\"\/><figcaption style=\"font-size:13px;color:#667085;margin-top:8px\">A refurbished, VIN-programmed replacement PCM for the 2002 Toyota Highlander from Flagship One.<\/figcaption><\/figure>\n<p>Flagship One stocks a <a href=\"https:\/\/www.fs1inc.com\/2002-toyota-highlander-3-0l-ecm-engine-computer-pcm-ecu-programmed-plug-play.html\"><b>refurbished, VIN-programmed PCM for the 2002 Toyota Highlander<\/b><\/a> with a lifetime warranty, free shipping and no core charge. The full <a href=\"https:\/\/www.fs1inc.com\/toyota-ecm-pcm-ecu-engine-computer\/highlander-engine-computers.html\">Toyota Highlander module lineup<\/a> covers other engine configurations as well.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Final Thoughts<\/h2>\n<p>Your 2002 Toyota Highlander depends on a healthy engine control module for reliable operation, and recognizing the signs of failure early can prevent a breakdown. Whether you face a persistent check-engine light or a no-start condition, understanding the module location, programming needs, and related service bulletins puts you in a stronger position. Flagship One offers pre-programmed replacement units tailored to your specific vehicle identification number for straightforward installation.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>2002 Toyota Highlander engine computer failure can cause no-start, stalling, and MIL codes. Learn symptoms, location, and programmed replacement options.<\/p>\n","protected":false},"author":1,"featured_media":522596,"comment_status":"open","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[258,104],"tags":[48,468,96],"class_list":["post-535988","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-car","category-toyota","tag-48","tag-highlander","tag-toyota"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>2002 Toyota Highlander Engine Computer Replacement and Programming - Flagship One Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.fs1inc.com\/blog\/2002-toyota-highlander-pcm-replacement-guide\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"2002 Toyota Highlander Engine Computer Replacement and Programming - Flagship One Blog\" \/>\n<meta property=\"og:description\" content=\"2002 Toyota Highlander engine computer failure can cause no-start, stalling, and MIL codes. Learn symptoms, location, and programmed replacement options.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.fs1inc.com\/blog\/2002-toyota-highlander-pcm-replacement-guide\/\" \/>\n<meta property=\"og:site_name\" content=\"Flagship One Blog\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/flagshipone\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/flagshipone\/\" \/>\n<meta property=\"article:published_time\" content=\"2026-07-19T03:34:37+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2026\/07\/2002-toyota-highlander-ecu-location-card.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"675\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"author\" content=\"FlagshipOne\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@theflagshipone\" \/>\n<meta name=\"twitter:site\" content=\"@theflagshipone\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"FlagshipOne\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"7 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2002-toyota-highlander-pcm-replacement-guide\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2002-toyota-highlander-pcm-replacement-guide\\\/\"},\"author\":{\"name\":\"FlagshipOne\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#\\\/schema\\\/person\\\/a3cf463514bd03eb7656953ef8f75700\"},\"headline\":\"2002 Toyota Highlander Engine Computer Replacement and Programming\",\"datePublished\":\"2026-07-19T03:34:37+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2002-toyota-highlander-pcm-replacement-guide\\\/\"},\"wordCount\":1483,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2002-toyota-highlander-pcm-replacement-guide\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/2002-toyota-highlander-ecu-location-card.webp\",\"keywords\":[\"2002\",\"Highlander\",\"Toyota\"],\"articleSection\":[\"Car\",\"Toyota\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2002-toyota-highlander-pcm-replacement-guide\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2002-toyota-highlander-pcm-replacement-guide\\\/\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2002-toyota-highlander-pcm-replacement-guide\\\/\",\"name\":\"2002 Toyota Highlander Engine Computer Replacement and Programming - Flagship One Blog\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2002-toyota-highlander-pcm-replacement-guide\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2002-toyota-highlander-pcm-replacement-guide\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/2002-toyota-highlander-ecu-location-card.webp\",\"datePublished\":\"2026-07-19T03:34:37+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2002-toyota-highlander-pcm-replacement-guide\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2002-toyota-highlander-pcm-replacement-guide\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2002-toyota-highlander-pcm-replacement-guide\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/2002-toyota-highlander-ecu-location-card.webp\",\"contentUrl\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/2002-toyota-highlander-ecu-location-card.webp\",\"width\":1200,\"height\":675,\"caption\":\"Typical ECU mounting area on the 2002 Toyota Highlander \u2014 reference card\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2002-toyota-highlander-pcm-replacement-guide\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"2002 Toyota Highlander Engine Computer Replacement and Programming\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#website\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/\",\"name\":\"Flagship One Blog\",\"description\":\"Flagship One Inc. OEM Engine Computers  Control Modules\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#organization\",\"name\":\"Flagship One, Inc.\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2019\\\/06\\\/web-lg-fs1-logo.png\",\"contentUrl\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2019\\\/06\\\/web-lg-fs1-logo.png\",\"width\":1341,\"height\":1098,\"caption\":\"Flagship One, Inc.\"},\"image\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/flagshipone\",\"https:\\\/\\\/x.com\\\/theflagshipone\",\"https:\\\/\\\/www.instagram.com\\\/flagship_one\",\"https:\\\/\\\/www.youtube.com\\\/channel\\\/UC0oyKphffBM2qkJ-gKPmMXw\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#\\\/schema\\\/person\\\/a3cf463514bd03eb7656953ef8f75700\",\"name\":\"FlagshipOne\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/351b81e51993825aea73280c48061a7205fdd2189730ebbdee5d63894c5cebb4?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/351b81e51993825aea73280c48061a7205fdd2189730ebbdee5d63894c5cebb4?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/351b81e51993825aea73280c48061a7205fdd2189730ebbdee5d63894c5cebb4?s=96&d=mm&r=g\",\"caption\":\"FlagshipOne\"},\"description\":\"The world's top supplier of programmed OEM (Original Equipment Manufacturer) Powertrain Control Modules (PCM), Engine Control Modules (ECM), Injection Control Modules (IDM), Body Control Modules (BCM), Transmission Control Modules (TCM), Engine Control Units and all other car control units. With over a decade in the business, we are the most reliable source when it comes to programming services for replacement engine control modules.\",\"sameAs\":[\"https:\\\/\\\/www.fs1inc.com\\\/\",\"https:\\\/\\\/www.facebook.com\\\/flagshipone\\\/\",\"https:\\\/\\\/www.instagram.com\\\/flagship_one\\\/\",\"https:\\\/\\\/www.linkedin.com\\\/company\\\/fs1inc\"],\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/author\\\/flagship1inc\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"2002 Toyota Highlander Engine Computer Replacement and Programming - Flagship One Blog","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.fs1inc.com\/blog\/2002-toyota-highlander-pcm-replacement-guide\/","og_locale":"en_US","og_type":"article","og_title":"2002 Toyota Highlander Engine Computer Replacement and Programming - Flagship One Blog","og_description":"2002 Toyota Highlander engine computer failure can cause no-start, stalling, and MIL codes. Learn symptoms, location, and programmed replacement options.","og_url":"https:\/\/www.fs1inc.com\/blog\/2002-toyota-highlander-pcm-replacement-guide\/","og_site_name":"Flagship One Blog","article_publisher":"https:\/\/www.facebook.com\/flagshipone","article_author":"https:\/\/www.facebook.com\/flagshipone\/","article_published_time":"2026-07-19T03:34:37+00:00","og_image":[{"width":1200,"height":675,"url":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2026\/07\/2002-toyota-highlander-ecu-location-card.webp","type":"image\/webp"}],"author":"FlagshipOne","twitter_card":"summary_large_image","twitter_creator":"@theflagshipone","twitter_site":"@theflagshipone","twitter_misc":{"Written by":"FlagshipOne","Est. reading time":"7 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.fs1inc.com\/blog\/2002-toyota-highlander-pcm-replacement-guide\/#article","isPartOf":{"@id":"https:\/\/www.fs1inc.com\/blog\/2002-toyota-highlander-pcm-replacement-guide\/"},"author":{"name":"FlagshipOne","@id":"https:\/\/www.fs1inc.com\/blog\/#\/schema\/person\/a3cf463514bd03eb7656953ef8f75700"},"headline":"2002 Toyota Highlander Engine Computer Replacement and Programming","datePublished":"2026-07-19T03:34:37+00:00","mainEntityOfPage":{"@id":"https:\/\/www.fs1inc.com\/blog\/2002-toyota-highlander-pcm-replacement-guide\/"},"wordCount":1483,"commentCount":0,"publisher":{"@id":"https:\/\/www.fs1inc.com\/blog\/#organization"},"image":{"@id":"https:\/\/www.fs1inc.com\/blog\/2002-toyota-highlander-pcm-replacement-guide\/#primaryimage"},"thumbnailUrl":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2026\/07\/2002-toyota-highlander-ecu-location-card.webp","keywords":["2002","Highlander","Toyota"],"articleSection":["Car","Toyota"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/www.fs1inc.com\/blog\/2002-toyota-highlander-pcm-replacement-guide\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/www.fs1inc.com\/blog\/2002-toyota-highlander-pcm-replacement-guide\/","url":"https:\/\/www.fs1inc.com\/blog\/2002-toyota-highlander-pcm-replacement-guide\/","name":"2002 Toyota Highlander Engine Computer Replacement and Programming - Flagship One Blog","isPartOf":{"@id":"https:\/\/www.fs1inc.com\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.fs1inc.com\/blog\/2002-toyota-highlander-pcm-replacement-guide\/#primaryimage"},"image":{"@id":"https:\/\/www.fs1inc.com\/blog\/2002-toyota-highlander-pcm-replacement-guide\/#primaryimage"},"thumbnailUrl":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2026\/07\/2002-toyota-highlander-ecu-location-card.webp","datePublished":"2026-07-19T03:34:37+00:00","breadcrumb":{"@id":"https:\/\/www.fs1inc.com\/blog\/2002-toyota-highlander-pcm-replacement-guide\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.fs1inc.com\/blog\/2002-toyota-highlander-pcm-replacement-guide\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.fs1inc.com\/blog\/2002-toyota-highlander-pcm-replacement-guide\/#primaryimage","url":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2026\/07\/2002-toyota-highlander-ecu-location-card.webp","contentUrl":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2026\/07\/2002-toyota-highlander-ecu-location-card.webp","width":1200,"height":675,"caption":"Typical ECU mounting area on the 2002 Toyota Highlander \u2014 reference card"},{"@type":"BreadcrumbList","@id":"https:\/\/www.fs1inc.com\/blog\/2002-toyota-highlander-pcm-replacement-guide\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.fs1inc.com\/blog\/"},{"@type":"ListItem","position":2,"name":"2002 Toyota Highlander Engine Computer Replacement and Programming"}]},{"@type":"WebSite","@id":"https:\/\/www.fs1inc.com\/blog\/#website","url":"https:\/\/www.fs1inc.com\/blog\/","name":"Flagship One Blog","description":"Flagship One Inc. OEM Engine Computers  Control Modules","publisher":{"@id":"https:\/\/www.fs1inc.com\/blog\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.fs1inc.com\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.fs1inc.com\/blog\/#organization","name":"Flagship One, Inc.","url":"https:\/\/www.fs1inc.com\/blog\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.fs1inc.com\/blog\/#\/schema\/logo\/image\/","url":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2019\/06\/web-lg-fs1-logo.png","contentUrl":"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2019\/06\/web-lg-fs1-logo.png","width":1341,"height":1098,"caption":"Flagship One, Inc."},"image":{"@id":"https:\/\/www.fs1inc.com\/blog\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/flagshipone","https:\/\/x.com\/theflagshipone","https:\/\/www.instagram.com\/flagship_one","https:\/\/www.youtube.com\/channel\/UC0oyKphffBM2qkJ-gKPmMXw"]},{"@type":"Person","@id":"https:\/\/www.fs1inc.com\/blog\/#\/schema\/person\/a3cf463514bd03eb7656953ef8f75700","name":"FlagshipOne","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/351b81e51993825aea73280c48061a7205fdd2189730ebbdee5d63894c5cebb4?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/351b81e51993825aea73280c48061a7205fdd2189730ebbdee5d63894c5cebb4?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/351b81e51993825aea73280c48061a7205fdd2189730ebbdee5d63894c5cebb4?s=96&d=mm&r=g","caption":"FlagshipOne"},"description":"The world's top supplier of programmed OEM (Original Equipment Manufacturer) Powertrain Control Modules (PCM), Engine Control Modules (ECM), Injection Control Modules (IDM), Body Control Modules (BCM), Transmission Control Modules (TCM), Engine Control Units and all other car control units. With over a decade in the business, we are the most reliable source when it comes to programming services for replacement engine control modules.","sameAs":["https:\/\/www.fs1inc.com\/","https:\/\/www.facebook.com\/flagshipone\/","https:\/\/www.instagram.com\/flagship_one\/","https:\/\/www.linkedin.com\/company\/fs1inc"],"url":"https:\/\/www.fs1inc.com\/blog\/author\/flagship1inc\/"}]}},"_links":{"self":[{"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/posts\/535988","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/comments?post=535988"}],"version-history":[{"count":1,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/posts\/535988\/revisions"}],"predecessor-version":[{"id":535989,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/posts\/535988\/revisions\/535989"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/media\/522596"}],"wp:attachment":[{"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/media?parent=535988"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/categories?post=535988"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fs1inc.com\/blog\/wp-json\/wp\/v2\/tags?post=535988"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}