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DIAGNOSTIC INTELLIGENCE
OEM Data. AI-powered Insights.
Fast, Accurate Answers.
Diagnostic Intelligence brings together OEM service information, prioritized probable causes, shortcut tests, known fixes, and AI-guided insight all in one focused diagnostic workflow.
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Test drive ALLDATA’s most popular shop bundles FREE for 7 days. Includes our #1 OEM repair info, digital vehicle inspections, and mobile access.
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THE ALLDATA ADVANTAGE
ALLDATA is the industry’s #1 choice for unedited mechanical and collision OEM repair information, diagnostic solutions, shop management software, and support services, trusted by more than 400,000 technicians in over 115,000 shops worldwide.
Up-to-date OEM mechanical/collision repair information and procedures for 44,000 engine-specific vehicles, 95% of all vehicles on the road today.
Get solutions to your most challenging repair issues with data-driven solutions based on aftermarket analysis and peer validation and Tech-Assist, a diagnostic hotline staffed by 30+ ASE-Certified Master Techs.
Shops of all sizes can streamline day-to-day workflow processes and improve business efficiency with our three shop management solutions.
From a business stance, more cars equals more money. ALLDATA definitely speeds up the process and it ultimately makes the repair go smoothly and quickly.
Five stars, two thumbs up, 10 out of 10, will 100% recommend to any of my colleagues in the automotive repair industry.
WORKING WITH THE INDUSTRY’S BEST
ALLDATA proudly partners with other leaders in the automotive industry. These affiliations help ensure that the OEM information found in ALLDATA products is used in major organizations nationwide for vehicle repair and maintenance.
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Engine Cooling Fan Low Speed Problem? Check the Resistor
In an effort to improve fuel economy, and reduce unnecessary engine load, mechanical engine-driven cooling fans have largely given way to electric cooling fans. Depending on the application, these systems may use high and low speed relays or a PCM-controlled pulse-width modulated (PWM) signal sent to a fan control module.
