Test Equipment
All voltage tests should be performed using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance, unless specifically stated differently in testing procedure. DO NOT use test lights to test circuits containing solid state devices, doing so can damage solid state devices. When instructed to use a jumper wire ensure an in-line, 5-amp fuse is included. A Land Rover TestBook system, OBD-II compliant scan tool or a Snap-On Personal Automotive Computer (PAC) can be used to diagnosis driveability problems. Follow equipment manufacturer operating instructions. If using a Snap-On PAC, see appropriate examples of known-good wave patterns.