Special Tools
EL–39200 Digital Multimeter (DMM)
For equivalent regional tools, refer toSpecial Tools.
Caution:Refer toTest Probe Caution.
The following procedure determines the difference in voltage potential between 2-points.
hotatalltimesfuseSet the Digital Multimeter (DMM) to the V (DC) position.Connect the positive lead of the DMM to one point of the circuit to be tested.Connect the negative lead of the DMM to the other point of the circuit.Operate the circuit.The DMM displays the difference in voltage between the 2-points.
Fuel Pressure Relief Engine Control
Warning:Fuel that flows out at high pressure can cause serious injuryto the skin and eyes. ALWAYS depressurize the fuel system beforeremoving components that are under high fuel pressure.Note:If a scan tool is not available, WAIT at LEAST 2-hours after the engine has been run,before removing the hig ...