Learn how to effectively test a Mass Air Flow (MAF) sensor without a scan tool. Discover crucial steps to check the power circuit and ground circuit, ensuring the sensor receives 12 volts. Identify abnormal voltage fluctuations that may indicate issues with the engine’s air intake. Use a digital multimeter for accurate readings, probing specific circuits to assess signal output. Find out how to interpret voltage signals at different RPM levels to diagnose sensor functionality. Access a c…
