Scan Tool

Fig. 1 Adaptor Coupling For Use With Digital Multimeter:

Scan Tool
The scan tool is available to anyone wishing to purchase it from a tool specialist and can be adapted to interrogate most manufacturers vehicles. The typical scan tool (Fig. 1 will be equipped with an SAE diagnostic plug to engage the diagnostic socket in the vehicle and a cable and plug to obtain power for the tool, inserted into the cigar lighter or a battery adaptor cable. The scan tool must be equipped with the software to interrogate the vehicle system and this may take the form of a memory cartridge, specific to Jaguar, inserted in the tool. The tool manufacturers handbook will instruct the user in the correct method of interrogating the system, any fault codes and instructional text will be displayed on the screen.