IS 300 L6-3.0L (2JZ-GE) (2001)
K: Indicates a shielded cable.
L: Indicates the pin number of the connector. The numbering system is different for female and male connectors.
M: Indicates a ground point.
The first letter of the code for each ground point(s) indicates the component's location, e.g, "E" for the Engine Compartment, "I" for the Instrument
Panel and Surrounding area, and "B" for the Body and Surrounding area.