194002901 - Y061 P1612 - FUEL FILTER HEATER RELAY CONTROL (SC TO EARTH)

The diagnostic equipment signals: Error P1612 (fuel filter heater relay control), with detail "short circuit to earth"

This error is detected if there is a short circuit to earth in the circuit connected to Pin 68 of the junction unit for at least 0.3 secs.

0	Preliminary checks	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	In the engine compartment junction unit    See B001 IGNITION SWITCH NOT WORKINGcheck 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.	Move on to Step 1	1.Fuse F20 has blown	1.Continue with the test    See Test 5505AB CHECK DIESEL PREHEATING RELAY PROTECTIVE FUSE
			2.Fuse F11 has blown	2.Replace the engine compartment junction unit    Op. 5505A13 ADDITIONAL JUNCTION UNIT IN ENGINE COMPARTMENT - R.R.
1	Fuel heating relay check	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the relay for heating the fuel is working properly, by carrying out the testSee Test 5505AC CHECK DIESEL PREHEATING RELAY	End of diagnosis