{"id":534821,"date":"2026-07-17T18:00:23","date_gmt":"2026-07-17T22:00:23","guid":{"rendered":"https:\/\/www.fs1inc.com\/blog\/?p=534821"},"modified":"2026-07-17T18:00:23","modified_gmt":"2026-07-17T22:00:23","slug":"2014-scion-iq-pcm-replacement-guide","status":"publish","type":"post","link":"https:\/\/www.fs1inc.com\/blog\/2014-scion-iq-pcm-replacement-guide\/","title":{"rendered":"2014 Scion iQ 1.3L PCM\/ECM Replacement Guide"},"content":{"rendered":"<div class=\"container\">\n<section class=\"hero\">\n<div class=\"code-badge\">PCM<\/div>\n<h1>2014 Scion iQ 1.3L PCM\/ECM Replacement Guide<\/h1>\n<p class=\"hero-subtitle\">The powertrain control module (PCM) in your 2014 Scion iQ 1.3L manages engine and transmission functions. When it fails, the vehicle may not start, stall, or log internal fault code P0606. Replacement requires 1.5 hours labor plus a 0.5-hour relearn procedure.<\/p>\n<\/section>\n<div class=\"quick-summary\">\n<h2>Quick Summary<\/h2>\n<ul>\n<li>The PCM is located next to the air cleaner assembly; access requires removing the windshield washer jar and No. 1 air cleaner inlet.<\/li>\n<li>Book labor for PCM removal and replacement is 1.5 hours, plus 0.5 hours for a relearn procedure.<\/li>\n<li>A documented internal trouble code for this vehicle is P0606, indicating a module processor fault.<\/li>\n<li>Flagship One supplies VIN-programmed units that eliminate the need for factory relearn steps after installation.<\/li>\n<li>Common failure symptoms include no-start, stalling, misfire codes, and loss of scan-tool communication.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<p>If your 2014 Scion iQ 1.3L is experiencing intermittent stalling, a no-start condition, or a check engine light with code P0606, the powertrain control module (PCM) may be at fault. This module is the central computer that controls fuel delivery, ignition timing, and transmission shifting. Understanding its role, location, and replacement procedure helps you make an informed repair decision. This guide covers where the PCM is mounted, what labor is involved, and how a pre-programmed replacement unit can simplify the job. You will also learn the common symptoms of a failing PCM and how to protect the new module from future damage.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>What the PCM Does in a 2014 Scion iQ<\/h2>\n<p>The powertrain control module in your 2014 Scion iQ 1.3L is a sealed electronic unit that continuously monitors sensor inputs\u2014such as throttle position, oxygen levels, and crankshaft speed\u2014and adjusts engine and transmission operation accordingly. It also manages emissions controls and communicates with other modules via the vehicle\u2019s data bus. When this module fails, the engine may run poorly or not at all, and diagnostic trouble codes like P0606 may appear. For a reliable fix, you can choose from <a href=\"https:\/\/www.fs1inc.com\/toyota-ecm-pcm-ecu-engine-computer\/scion-ecm-pcm-ecu-engine-computer\/iq-engine-computers.html\">replacement engine computers for the Scion iQ<\/a> that are pre-programmed to match your VIN, avoiding the need for a dealer visit. The module\u2019s failure often stems from voltage spikes, heat, or moisture intrusion, so addressing root causes is important.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Where the PCM Is Located and What Replacement Involves<\/h2>\n<p>The PCM on the 2014 Scion iQ 1.3L is mounted next to the air cleaner assembly, on the driver\u2019s side of the engine bay. To access it, the factory procedure requires removing the windshield washer jar assembly and the No. 1 air cleaner inlet. Once those components are out of the way, the module can be unbolted and disconnected. Book labor for the removal and replacement (R&amp;R) is 1.5 hours. After installing the new module, a 0.5-hour powertrain control module relearn (also called engine control module relearn) is required to synchronize the module with the vehicle\u2019s throttle and transmission adaptations. This relearn is typically done with a scan tool and involves specific driving or idle procedures.<\/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\/2014-scion-iq-ecm-location-card.webp\" alt=\"2014 Scion iQ PCM location diagram\" loading=\"lazy\"\/><figcaption style=\"font-size:13px;color:#667085;margin-top:8px\">Typical PCM mounting area on the 2014 Scion iQ (reference).<\/figcaption><\/figure>\n<div style=\"background:#f7f9fc;border:1px solid #e2e8f2;border-radius:10px;padding:18px 24px;margin:18px 0\">\n<h3 style='margin-top:0'>How to Reach the PCM on the 2014 Scion iQ<\/h3>\n<ol style=\"margin:14px 0 6px 0;padding-left:26px\">\n<li style=\"margin:10px 0;line-height:1.65\"><b>Remove<\/b> windshield washer jar assembly.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Pull<\/b> up the lever to loosen the lock and disconnect the 2 connectors from the ECM.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Remove<\/b> the 5 bolts and the ECM from the fan shroud.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Remove<\/b> ecu bracket.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\"><b>Remove<\/b> the 2 screws and the ECU bracket from the ECM.<\/li>\n<\/ol>\n<p style='margin:10px 0 0 0'><em>Work with the ignition off, and treat the module as static-sensitive: avoid touching the connector pins at any point.<\/em><\/p>\n<\/div>\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\">Powertrain Control Module R&amp;R<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">All configurations<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">1.5 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<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\">All configurations<\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\">1.5 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 PCM in your 2014 Scion iQ 1.3L, the factory procedure mandates a 0.5-hour relearn to calibrate the module to the vehicle\u2019s specific engine and transmission parameters. This step is essential for proper idle, throttle response, and shift quality. However, when you purchase <a href=\"https:\/\/www.fs1inc.com\/2014-scion-iq-1-3l-pcm-engine-computer-ecm-ecu-programmed-plug-play.html\">a VIN-programmed replacement unit<\/a> from Flagship One, the module arrives with your vehicle\u2019s VIN and calibration data already loaded. That means the relearn procedure is effectively completed before installation, so you can install the unit and start the engine without needing a dealer scan tool or additional programming steps. This saves time and ensures the module is ready to communicate with your Scion iQ\u2019s systems.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Symptoms of a Failing PCM<\/h2>\n<p>A failing PCM in the 2014 Scion iQ 1.3L can cause a range of driveability issues. The engine may crank but not start, or it may start and stall shortly after. You might notice intermittent misfires, rough idle, or hesitation during acceleration. The check engine light often illuminates, and a scan tool may reveal <a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0606-control-module-processor\/\">internal control module fault<\/a> stored in memory. Other symptoms include loss of communication with the scan tool (no data from the PCM), erratic transmission shifting, or the vehicle entering a limp-home mode with reduced power. Because the PCM controls many systems, failure can mimic problems with sensors, fuel delivery, or ignition components, making diagnosis tricky.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Module Trouble Codes on the 2014 Scion iQ<\/h2>\n<p>The following diagnostic trouble code is documented for the 2014 Scion iQ 1.3L PCM. This code indicates a module-internal fault and often points to a hardware failure requiring PCM replacement.<\/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\">Code<\/th>\n<th style=\"border:1px solid #d6dbe3;background:#f2f5f9;padding:9px 12px;text-align:left\">Meaning<\/th>\n<th style=\"border:1px solid #d6dbe3;background:#f2f5f9;padding:9px 12px;text-align:left\">Full Guide<\/th>\n<\/tr>\n<tr>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0606-control-module-processor\/\" style=\"color:#0563C1;text-decoration:none;display:block;cursor:pointer\"><b>P0606<\/b><\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0606-control-module-processor\/\" style=\"color:#1a2b49;text-decoration:none;display:block;cursor:pointer\">Module processor failure<\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0606-control-module-processor\/\" style=\"color:#0563C1\"><b><u>Full P0606 guide &rarr;<\/u><\/b><\/a><\/td>\n<\/tr>\n<\/table>\n<\/div>\n<div class=\"info-section\">\n<h2>Protecting the PCM in Your 2014 Scion iQ<\/h2>\n<ul style=\"margin:14px 0 6px 0;padding-left:26px\">\n<li style=\"margin:10px 0;line-height:1.65\">Maintain the charging system: keep the battery and alternator in good condition to avoid voltage spikes that can damage the PCM.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Inspect and clean ground connections and module connectors periodically to ensure low-resistance paths and prevent corrosion.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Avoid jump-starting the vehicle with a running donor vehicle; connect cables only with both engines off to reduce surge risk.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Address any diagnostic trouble codes promptly\u2014especially P0606\u2014before they lead to further module degradation.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Keep the PCM connector seals intact and ensure the module is properly seated to prevent moisture entry.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">When performing electrical work on the vehicle, disconnect the battery negative terminal to protect the module from accidental shorts.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<h2>Frequently Asked Questions<\/h2>\n<h3>How do I know if the PCM in my 2014 Scion iQ 1.3L needs replacement?<\/h3>\n<p>Common signs include a no-start condition, stalling, misfire codes, or a stored P0606 code. If you have verified power and ground to the module and it still fails to communicate with a scan tool, replacement is likely needed.<\/p>\n<h3>Can I install a used PCM from a salvage yard in my 2014 Scion iQ?<\/h3>\n<p>A used PCM will need to be programmed to your vehicle\u2019s VIN and may have different calibration data. It also carries unknown failure risk. A pre-programmed new unit from Flagship One avoids these issues and comes ready to install.<\/p>\n<h3>What is the labor time to replace the PCM on a 2014 Scion iQ?<\/h3>\n<p>Book labor for PCM removal and replacement is 1.5 hours. An additional 0.5 hours is required for the relearn procedure, though a pre-programmed unit from Flagship One eliminates that step.<\/p>\n<\/div>\n<div class=\"info-section\">\n<p>When your 2014 Scion iQ 1.3L needs a new PCM, you have two paths: have a shop install a blank module and perform the factory relearn, or choose a pre-programmed replacement from Flagship One that arrives ready to install. The latter saves the 0.5-hour relearn labor and avoids potential programming complications. Given the module\u2019s location next to the air cleaner, the 1.5-hour R&amp;R is straightforward for a competent DIYer or mechanic.<\/p>\n<p>Flagship One stocks a <a href=\"https:\/\/www.fs1inc.com\/2014-scion-iq-1-3l-pcm-engine-computer-ecm-ecu-programmed-plug-play.html\"><b>refurbished, VIN-programmed PCM for the 2014 Scion iQ<\/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\/scion-ecm-pcm-ecu-engine-computer\/iq-engine-computers.html\">Scion iQ module lineup<\/a> covers other engine configurations as well.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Final Thoughts<\/h2>\n<p>The PCM in your 2014 Scion iQ 1.3L is a critical component that, when it fails, can leave you stranded. Recognizing symptoms like P0606 and knowing the replacement procedure\u20141.5 hours R&amp;R plus a 0.5-hour relearn\u2014helps you plan the repair. Flagship One\u2019s VIN-programmed units simplify the job by eliminating the post-install programming step, getting your Scion iQ back on the road faster.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Symptoms, location, and labor for 2014 Scion iQ 1.3L PCM\/ECM failure. Learn about P0606, replacement steps, and how pre-programmed units save time.<\/p>\n","protected":false},"author":1,"featured_media":522489,"comment_status":"open","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[258,462],"tags":[268,1576,463],"class_list":["post-534821","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-car","category-scion","tag-268","tag-iq","tag-scion"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>2014 Scion iQ 1.3L PCM\/ECM Replacement Guide - 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\/2014-scion-iq-pcm-replacement-guide\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"2014 Scion iQ 1.3L PCM\/ECM Replacement Guide - Flagship One Blog\" \/>\n<meta property=\"og:description\" content=\"Symptoms, location, and labor for 2014 Scion iQ 1.3L PCM\/ECM failure. Learn about P0606, replacement steps, and how pre-programmed units save time.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.fs1inc.com\/blog\/2014-scion-iq-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=\"2026-07-17T22:00:23+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.fs1inc.com\/blog\/wp-content\/uploads\/2026\/07\/2014-scion-iq-ecm-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=\"6 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2014-scion-iq-pcm-replacement-guide\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2014-scion-iq-pcm-replacement-guide\\\/\"},\"author\":{\"name\":\"FlagshipOne\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#\\\/schema\\\/person\\\/a3cf463514bd03eb7656953ef8f75700\"},\"headline\":\"2014 Scion iQ 1.3L PCM\\\/ECM Replacement Guide\",\"datePublished\":\"2026-07-17T22:00:23+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2014-scion-iq-pcm-replacement-guide\\\/\"},\"wordCount\":1321,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2014-scion-iq-pcm-replacement-guide\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/2014-scion-iq-ecm-location-card.webp\",\"keywords\":[\"2014\",\"iQ\",\"Scion\"],\"articleSection\":[\"Car\",\"Scion\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2014-scion-iq-pcm-replacement-guide\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2014-scion-iq-pcm-replacement-guide\\\/\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2014-scion-iq-pcm-replacement-guide\\\/\",\"name\":\"2014 Scion iQ 1.3L PCM\\\/ECM Replacement Guide - Flagship One Blog\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2014-scion-iq-pcm-replacement-guide\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2014-scion-iq-pcm-replacement-guide\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/2014-scion-iq-ecm-location-card.webp\",\"datePublished\":\"2026-07-17T22:00:23+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2014-scion-iq-pcm-replacement-guide\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2014-scion-iq-pcm-replacement-guide\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2014-scion-iq-pcm-replacement-guide\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/2014-scion-iq-ecm-location-card.webp\",\"contentUrl\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/2014-scion-iq-ecm-location-card.webp\",\"width\":1200,\"height\":675,\"caption\":\"Typical ECM mounting area on the 2014 Scion iQ \u2014 reference card\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/2014-scion-iq-pcm-replacement-guide\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"2014 Scion iQ 1.3L PCM\\\/ECM Replacement Guide\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/#website\",\"url\":\"https:\\\/\\\/www.fs1inc.com\\\/blog\\\/\",\"name\":\"Flagship One Blog\",\"description\":\"Flagship One Inc. 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