J20 REARSCREEN AND DOOR MIRROR DEFROSTING NOT WORKING - Fiat - DOBLO - eLearn

2582428 - J20 REARSCREEN AND DOOR MIRROR DEFROSTING NOT WORKING

With the ignition on, when the heated rear window button on the control panel is pressed, neither the rear window nor the door mirrors warm up properly

1	FUSE CHECK	All OK	Problems met	Operation
		Results of the tests
	Check, in order: Fuse in engine compartment unit Condition of connecting cable between fuse and heated rear window relay in dashboard unit See E3030 HEATED REAR WINDSCREEN AND DOOR MIRROR DEFROSTING	Continue to Step 2	Component defective	Replace the component (if a fuse is involved, search for the cause of the problem)
		Continue to Step 2	Connections not correct	Restore connections
2	HEATED REAR WINDSCREEN SWITCH CHECK	All OK	Problems met	Operation
	Check the operation of the heated rear window switch on the control panel Also check the connection to the Body Computer	Continue to Step 3	Faulty switch	Replace the control panel Op. 5505A24
		Continue to Step 3	Connection not correct	Restore connections
3	CHECK ON HEATED REAR WINDOW RELAY	All OK	Problems met	Operation
	Check the operation of the heated rear window relay and the condition of the connecting cables	Continue to Step 4	Relay faulty	Replace the relay
		Continue to Step 4	Connection not correct	Restore connections
4	CHECK ON BODY COMPUTER	All OK	Problems met	Operation
	Check that the Body Computer sends the signal to operate the heated rear window relay	Continue to Step 5	No signal	Replace the Body Computer Op. 5505A32
5	CHECK ELECTRICAL CIRCUIT	All OK	Problems met	Operation
	Check, in order: Fuses for heated rear window and door mirrors Connecting cables between dashboard unit and rear window Connecting cables between dashboard unit and door mirrors Earth cable for rear window and door mirrors	Continue to Step 6	Component defective	Replace the component (if a fuse is involved, search for the cause of the problem)
			Connections not correct	Restore connections
			Fuse unit faulty	Replace the fuse box Op. 5505A10
6	CHECK ON DEMISTING HEATING ELEMENTS	All OK	Problems met	Operation
	Check the demisting heating elements on the rear window and door mirrors	Continue to Step 7	Rear window heating element broken	Replace the rearscreen Op. 7035B24
		Continue to Step 7	Door mirror heating element broken	Restore the continuity See E3030 HEATED REAR WINDSCREEN AND DOOR MIRROR DEFROSTING
7	CHECK ON CORRECT OPERATION	All OK	Problems met	Operation
	Check that the fault is no longer present		Fault persists	Search for the fault starting from another symptom'