22 · Diagnostics

Trip meter does not zero

Fault diagnosisTrip meter does not zero

TRIP METER DOES NOT ZERO

With the ignition on the trip meter is not zeroed when the 0 km button is pressed;

the km zeroing button is directly connected to the instrument panel node and has two functions:

the km zeroing button is directly connected to the instrument panel node and has two functions:
1. "km zeroing" function when pressed for a long time (more than 3 secs)
2. "escape" function when pressed for a short time (less than 3 secs)

STEP	OPERATIONS TO BE CARRIED OUT	TEST RESULTS
0	PRELIMINARY CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that with thei ignition key on: with the door open (door open display on matrix) when the button is pressed for less than 3 seconds the "escape" function is activated with the lights on the ideogram on the button is lit up	Move on to Step	1. the function is not activated and the LED is not lit up	Move on to Step
		Move on to Step	2. the escape function is not activated and the LED is lit up	Move on to Step
1	KM ZEROING BUTTON CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Remove the km zeroing button and check that it is working properly (Wiring Diagram ) E4010 INSTRUMENT PANEL	Move on to Step	Zeroing button defective	Replace the km zeroing button See in Op. 5560B15 Milometer zeroing CONTROL - R.R.
2	CHECK ELECTRICAL CIRCUIT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Remove the instrument panel [PR. 5560B11] and check: the connection between the km zeroing button and the instrument panel the connection between the km zeroing button and the instrument panel	Move on to Step	Connections and/or earth faulty	Restore the connections and, if necessary, replace the wiring (Wiring Diagram ) E4010 INSTRUMENT PANEL
3	CHECK ON CORRECT OPERATION	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the fault is no longer present		Fault persists	Replace instrument panel See in Op. 5560B11 ANALOGUE CONTROL PANEL - R.R. or Replace

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