Milliamp clamp meter, No. 2231-20
Photo credit: Milwaukee
The Milwaukee milliamp clamp meter, No. 2231-20, makes diagnosing air-fuel sensors easy. Capable of being accurate at the milliamps level, the user can simply clamp the tool around the wire and get the accuracy of using a multimeter in series with a load without the hassle. The tool can measure 0 to 99 milliamps to cover a broad range of control signals if needed.