REV DSection 4 • Repair Procedures4 - 80 GS-3384 Part No. 82259September 2005MANIFOLDS7-9Valve CoilsHow to Test a CoilA properly functioning coil provides anelectromotive force which operates the solenoidvalve. Critical to normal operation is continuitywithin the coil that provides this force field.Electrocution hazard. Contact withelectrically charged circuits couldresult in death or serious injury.Remove all rings, watches andother jewelry.1 Tag and disconnect the wiring from the coil tobe tested.2 Test the coil resistance.Result: The resistance should be withinspecification, plus or minus 30%.Result: If the resistance is not withinspecification, plus or minus 30%, replace thecoil.Valve Coil ResistanceDescription SpecificationProportional valve, 12V DC 3.1 to 5.1Ω(schematic items AD)DO3 valve, 3 position 4 way, 10V DC 2.6 to 4.6Ω(schematic items AG and AK)Solenoid valve, 3 position 4 way 6.2 to 8.2Ω10V DC with diode (schematic item AH)Solenoid valve, 2 position 3 way 10V DC 5 to 7Ω(schematic item AL)Solenoid valve, 2 position 2 way 5.7 to 7.7Ω10V DC with diode (schematic items BC and BF)Solenoid valve, 2 position 2 way 10V DC 4.5 to 6.5Ω(schematic items CA, CB, CC and CD)Solenoid valve, 2 position 2 way 6.5 to 8.5Ω12V DC with diode (schematic item DA)Solenoid valve, 2 position 3 way 9 to 11Ω12V DC with diode (schematic items DE and DF)Solenoid valve, 2 position 2 way 9 to 11Ω12V DC with diode (schematic item DG)Solenoid valve, 2 position 3 way 6 to 8Ω10V DC with diode (schematic items EF and EJ)
