TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 1 Download
Page 408 of 890
TM 9-2320-280-20-1 REFERENCE INFORMATION GLOWPLUGS WARNING Disconnect negative battery cable before disconnecting and reconnecting protective control box harness. There is battery voltage at the PCB at all times. Failure to disconnect battery cable will result in damage to equipment or injury to personnel. NOTE You will not be able to check the solid-state controller using the pin-to-pin resistance check. The solid-state controller is identified by a green finish and a larger case. Replace glowplug controller, refer to (para 4-29). 2-315