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.
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
Replace glowplug controller, refer to (para 4-29).