{"id":528434,"date":"2026-07-17T02:00:40","date_gmt":"2026-07-17T06:00:40","guid":{"rendered":"https:\/\/www.fs1inc.com\/blog\/?p=528434"},"modified":"2026-07-17T02:00:40","modified_gmt":"2026-07-17T06:00:40","slug":"2009-mitsubishi-raider-pcm-replacement-guide","status":"publish","type":"post","link":"https:\/\/www.fs1inc.com\/blog\/2009-mitsubishi-raider-pcm-replacement-guide\/","title":{"rendered":"2009 Mitsubishi Raider 3.7L PCM ECM Failure and Replacement Guide"},"content":{"rendered":"<div class=\"container\">\n<section class=\"hero\">\n<div class=\"code-badge\">PCM<\/div>\n<h1>2009 Mitsubishi Raider 3.7L PCM ECM Failure and Replacement Guide<\/h1>\n<p class=\"hero-subtitle\">The powertrain control module (PCM) or engine control module (ECM) in your 2009 Mitsubishi Raider 3.7L is the computer that manages fuel injection, ignition timing, and emissions. Failure can trigger internal trouble codes P0601 and P0606, leading to drivability issues.<\/p>\n<\/section>\n<div class=\"quick-summary\">\n<h2>Quick Summary<\/h2>\n<ul>\n<li>The PCM\/ECM in the 2009 Mitsubishi Raider 3.7L controls engine management and can fail with internal codes P0601 and P0606.<\/li>\n<li>Replacement labor is 0.4 hours for PCM R&amp;R and 0.4 hours for ECM R&amp;R, plus a 0.5-hour relearn procedure.<\/li>\n<li>Symptoms of a failing module include no-start, stalling, misfire codes, and loss of scan-tool communication.<\/li>\n<li>Factory programming after replacement requires a 0.5-hour ECM relearn, which a VIN-programmed unit eliminates.<\/li>\n<li>Protecting the module involves maintaining charging system health and clean electrical connections.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<p>If your 2009 Mitsubishi Raider 3.7L has been acting up with intermittent stalling, a no-start condition, or a check engine light that refuses to go away, the powertrain control module (PCM) or engine control module (ECM) may be the culprit. These terms are often used interchangeably for the main computer that governs your engine&#8217;s operation. In the Raider, this module is responsible for controlling fuel delivery, ignition timing, idle speed, and emissions systems. When it begins to fail, you may experience a range of frustrating symptoms that can mimic other problems like a bad sensor or fuel pump. This article will help you understand what the PCM\/ECM does in your specific vehicle, where it is located, how to replace it, and what to expect after installation. You will also learn about the documented internal trouble codes P0601 and P0606, which indicate module-level faults. By the end, you will have a clear picture of whether a replacement is needed and how to proceed with confidence.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>What the PCM Does in a 2009 Mitsubishi Raider<\/h2>\n<p>The powertrain control module (PCM) in your 2009 Mitsubishi Raider 3.7L is the central computer that interprets sensor data and adjusts engine parameters in real time. It receives inputs from the crankshaft position sensor, throttle position sensor, oxygen sensors, and many others, then commands the fuel injectors, ignition coils, and idle air control motor to maintain proper operation. This module also manages the transmission shift points in models with an automatic transmission, though the Raider typically uses a separate transmission control module. The PCM stores diagnostic trouble codes when it detects a fault, and two of the most serious are internal module failures: P0601 (internal control module memory check sum error) and P0606 (internal control module processor fault). These codes indicate that the module itself has a hardware or software problem, not an external sensor or circuit. Because the PCM is the brain of the engine, a failure can cause a no-start, random stalling, poor fuel economy, or a complete loss of communication with a scan tool. When you need a replacement, you will be looking for <a href=\"https:\/\/www.fs1inc.com\/chrysler-dodge-plymouth\/mitsubishi-pcm-ecm-ecu-engine-computer\/raider-engine-computers.html\">replacement engine computers for the Mitsubishi Raider<\/a> that are pre-programmed to match your vehicle&#8217;s VIN and options. Choosing a properly programmed unit saves time and ensures the module communicates correctly with the rest of the vehicle systems.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Where the PCM Is Located and What Replacement Involves<\/h2>\n<p>The PCM\/ECM in the 2009 Mitsubishi Raider 3.7L is typically mounted under the hood on the driver side, near the firewall or on the inner fender. Access may require removing the air cleaner housing or other components to reach the module and its connectors. According to the labor time guidelines, removing and replacing the powertrain control module (PCM R&amp;R) is a 0.4-hour job, and the same 0.4-hour time applies to the engine control module (ECM R&amp;R). After the physical swap, a 0.5-hour engine control module relearn procedure is necessary to allow the new module to synchronize with the vehicle&#8217;s security system and adapt to the engine&#8217;s characteristics. The relearn typically involves a specific sequence of ignition key cycles and idle periods. Having the correct labor times helps you plan the repair, whether you do it yourself or have a shop perform the work.<\/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\">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\">0.4 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\">0.4 hr<\/td>\n<\/tr>\n<\/table>\n<\/div>\n<div class=\"info-section\">\n<h2>Programming Requirements After Replacement<\/h2>\n<p>After installing a new or replacement PCM\/ECM in your 2009 Mitsubishi Raider 3.7L, the factory procedure requires a 0.5-hour engine control module relearn. This step is critical because the module must learn the vehicle&#8217;s unique security code and adapt to the engine&#8217;s fuel trims and idle parameters. Without this relearn, the vehicle may not start or may run poorly. However, when you choose <a href=\"https:\/\/www.fs1inc.com\/2009-mitsubishi-raider-3-7l-pcm-engine-computer-ecm-ecu-programmed-plug-play.html\">a VIN-programmed replacement unit<\/a> from Flagship One, the module arrives already configured with your vehicle&#8217;s VIN and calibration data. This means the factory relearn procedure is already completed, and you can install the module and start the engine without additional programming steps. The 0.5-hour relearn time is effectively eliminated, saving you time and the need for a professional scan tool. Simply install the module, connect the battery, and the vehicle should start and run normally, though a brief idle learn cycle may still occur naturally.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Symptoms of a Failing PCM<\/h2>\n<p>A failing PCM\/ECM in the 2009 Mitsubishi Raider 3.7L can produce a variety of symptoms that may be intermittent or constant. Common signs include a no-start condition where the engine cranks but does not fire, or it starts and then stalls after a few seconds. You may also experience random stalling while driving, misfire codes that return even after replacing spark plugs and coils, and a check engine light that stays on. Another telltale symptom is a loss of communication with a scan tool \u2014 the tool cannot connect to the module, or it shows garbled data. The vehicle may also exhibit poor fuel economy, hesitation during acceleration, or erratic shifting if the PCM controls transmission functions. One of the most definitive indicators is the presence of internal trouble codes like <a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0601-internal-control-module-memory-checksum-error\/\">internal control module memory error P0601<\/a> or P0606, which point to a fault within the module itself rather than an external component. If you see these codes, the module likely needs replacement. Other symptoms can include the cooling fan running constantly, the battery draining overnight, or the instrument cluster behaving oddly. Because these symptoms overlap with other issues, proper diagnosis is essential before replacing the module.<\/p>\n<\/div>\n<div class=\"info-section\">\n<h2>Module Trouble Codes on the 2009 Mitsubishi Raider<\/h2>\n<p>The following internal module trouble codes are documented for the 2009 Mitsubishi Raider 3.7L. These codes indicate faults within the PCM\/ECM itself, not external sensors or circuits.<\/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-p0601-internal-control-module-memory-checksum-error\/\" style=\"color:#0563C1;text-decoration:none;display:block;cursor:pointer\"><b>P0601<\/b><\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0601-internal-control-module-memory-checksum-error\/\" style=\"color:#1a2b49;text-decoration:none;display:block;cursor:pointer\">Internal memory checksum error<\/a><\/td>\n<td style=\"border:1px solid #d6dbe3;padding:9px 12px\"><a href=\"https:\/\/www.fs1inc.com\/blog\/dtc-p0601-internal-control-module-memory-checksum-error\/\" style=\"color:#0563C1\"><b><u>Full P0601 guide &rarr;<\/u><\/b><\/a><\/td>\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 2009 Mitsubishi Raider<\/h2>\n<ul style=\"margin:14px 0 6px 0;padding-left:26px\">\n<li style=\"margin:10px 0;line-height:1.65\">Keep your vehicle&#8217;s charging system in good condition; a failing alternator or battery can send voltage spikes that damage the PCM\/ECM.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Inspect and clean all ground connections and module connectors annually, especially if you live in a region with road salt or high humidity.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Avoid jump-starting your vehicle with a running donor vehicle; connect cables only to a fully charged battery and let the donor engine be off.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Address any diagnostic trouble codes promptly, especially P0601 or P0606, as delaying replacement can lead to secondary issues like a dead battery from a stuck relay.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">Ensure the PCM\/ECM connector seals are intact and the module is mounted securely to prevent moisture intrusion and vibration damage.<\/li>\n<li style=\"margin:10px 0;line-height:1.65\">When performing electrical work on the vehicle, disconnect the battery negative terminal first to prevent accidental shorts that could harm the module.<\/li>\n<\/ul>\n<\/div>\n<div class=\"info-section\">\n<h2>Frequently Asked Questions<\/h2>\n<h3>Can a bad PCM in a 2009 Mitsubishi Raider 3.7L cause a no-start condition?<\/h3>\n<p>Yes, a failed PCM\/ECM can prevent the engine from starting. The module controls fuel injector pulse and ignition timing; if it is not functioning, the engine may crank but not fire. Internal codes P0601 or P0606 often accompany this symptom.<\/p>\n<h3>How do I know if my 2009 Mitsubishi Raider needs a PCM relearn after replacement?<\/h3>\n<p>The factory procedure requires a 0.5-hour ECM relearn after installing a new module. This step synchronizes the module with the vehicle&#8217;s security system and allows it to learn idle and fuel trim values. A VIN-programmed unit from Flagship One eliminates this step.<\/p>\n<h3>What is the difference between PCM and ECM on a 2009 Mitsubishi Raider?<\/h3>\n<p>In many vehicles, PCM (powertrain control module) and ECM (engine control module) are used interchangeably. For the Raider, the module controls engine functions and may also manage transmission shift points. The labor times list both PCM R&amp;R and ECM R&amp;R at 0.4 hours, indicating they refer to the same component.<\/p>\n<h3>Will a 2009 Mitsubishi Raider run with a bad PCM if I clear the codes?<\/h3>\n<p>Clearing the codes will not fix a hardware failure. If the module has internal faults like P0601 or P0606, the symptoms will return. The vehicle may run for a short time but will likely stall or fail to start again. Replacement is the only reliable solution.<\/p>\n<h3>Can I install a used PCM from a salvage yard in my 2009 Mitsubishi Raider?<\/h3>\n<p>A used PCM may work, but it must be programmed to your vehicle&#8217;s VIN and options. Without proper programming, the module may not communicate with the immobilizer system, causing a no-start. A VIN-programmed replacement unit from Flagship One avoids these compatibility issues.<\/p>\n<\/div>\n<div class=\"info-section\">\n<p>When your 2009 Mitsubishi Raider 3.7L needs a new PCM\/ECM, you have two main options: repair the existing module or replace it with a refurbished unit. Repair is sometimes possible for minor issues like a failed capacitor, but internal faults like P0601 or P0606 typically require a replacement. A refurbished module that is pre-programmed to your VIN offers a reliable, cost-effective solution that saves the 0.5-hour relearn step.<\/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\/jeepcombo\/jeep-pcm-4plugblack-auto-1.jpg\" alt=\"Refurbished VIN-programmed PCM for the 2009 Mitsubishi Raider\" loading=\"lazy\"\/><figcaption style=\"font-size:13px;color:#667085;margin-top:8px\">A refurbished, VIN-programmed replacement PCM for the 2009 Mitsubishi Raider from Flagship One.<\/figcaption><\/figure>\n<p>Flagship One stocks a <a href=\"https:\/\/www.fs1inc.com\/2009-mitsubishi-raider-3-7l-pcm-engine-computer-ecm-ecu-programmed-plug-play.html\"><b>refurbished, VIN-programmed PCM for the 2009 Mitsubishi Raider<\/b><\/a> with a lifetime warranty, free shipping and no core charge. The full <a href=\"https:\/\/www.fs1inc.com\/chrysler-dodge-plymouth\/mitsubishi-pcm-ecm-ecu-engine-computer\/raider-engine-computers.html\">Mitsubishi Raider 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\/ECM in your 2009 Mitsubishi Raider 3.7L is a critical component that, when it fails, can cause frustrating drivability issues. Recognizing symptoms like no-start, stalling, and internal codes P0601 or P0606 helps you diagnose the problem accurately. With the right replacement module and proper installation, your Raider can return to reliable operation. Consider a VIN-programmed unit to simplify the process.<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Learn about 2009 Mitsubishi Raider 3.7L PCM ECM failure symptoms like no-start and codes P0601 P0606. Avoid misdiagnosis with proper replacement steps and programming.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"elementor_header_footer","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[258,295],"tags":[264,296,810],"class_list":["post-528434","post","type-post","status-publish","format-standard","hentry","category-car","category-mitsubishi","tag-264","tag-mitsubishi","tag-raider"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>2009 Mitsubishi Raider 3.7L PCM ECM Failure and 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\/2009-mitsubishi-raider-pcm-replacement-guide\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"2009 Mitsubishi Raider 3.7L PCM ECM Failure and Replacement Guide - Flagship One Blog\" \/>\n<meta property=\"og:description\" content=\"Learn about 2009 Mitsubishi Raider 3.7L PCM ECM failure symptoms like no-start and codes P0601 P0606. 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