Having fun with this one.
From the wiring diagrams there are two fuses -
Sheet 1 bottom left is a 60A fuse 4EA this goes to a green / Red wire (GN-RD) and is the main power.
Sheet 1 about 1/3rd the way down on the right is a 15A fuse 8EA that goes to a grey and yellow cable (GY-YE), this is the control fuse, it splits into two on sheet 1 and again on sheet 2.
From sheet 2 the 60A fuse is the power to the module, the 15A fuse is the control, but it also goes to Sensor-heated-oxygen-front and to Pump-supercharge-coolant any one of these three can blow the control fuse and disable the glow plug module.
Time to get out the multimeter and diagnostics - just replacing stuff is an expensive way of fault finding, especially at LR parts prices.