939005166 - Y037 P0380 - PREHEATING UNIT CONTROL (SC TO EARTH)

The diagnostic equipment signals: Error P0380 (Pre-heating unit control), with detail "short circuit to earth"

This error is detected during the diagnosis of the junction unit final stage (short circuit to earth).

0	Preliminary checks	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check in the engine compartment junction unit that fuses F20 (the first on the right in the bottom row) and F11 (the third from the right in the bottom row) have not blown.    See B001 JUNCTION UNIT	Move on to Step 1	1. Fuse F20 has blown	1. Continue with the    See Test 5505AG CHECK SPARK PLUG HEATING FUSE
			2. Fuse F11 has blown	2. Replace the engine compartment junction unit    Op. 5505A13 ADDITIONAL JUNCTION UNIT IN ENGINE COMPARTMENT - R.R.
1	Check on operation of heater plugs	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the heater plugs are working properly, by carrying out the    See Test 5520CA GLOW PLUGS FUNCTIONAL TEST	End of diagnosis