Circuit layout
The sensor allows recognising the revolutionsand the angular position of the driving shaft referred to the TDC. Since
thewheel speed sensor is pivoted on the camshaft it is also possible to recognise the4-stroke cycle. Such solution
allows controlling the injector and the sparkplug every two revolutions of the driving shaft.
The sensor is of the reluctance variation typeand is therefore comparable to an alternate current generator that
powers thecontroller.
The signal frequency is interrupted by thevacuum generated by the two missing teeth on the wheel speed sensor.
The sensor signal is indispensable for theengine start-up.
The engine can work also with an unsteadysignal, thanks to corrective interventions made by the controller.
The total revolution signal failure does notcauses the injection indicator to turn on.
When the signal failure (open circuit) occursduring use on the road, the indicator light indicate the start of a failure bya
flash as follows:
To check the sensor and the relevant circuit,proceed as follows:
TERMINAL
CONDITIONS
STANDARD
7 - 12
Start-up
0,8 ?4,5 V~
1
CONTROLLER
2
ENGINE RPM SENSOR
A
Indicator light on
B
Indicator light off
1
- Connect the diagnostic tester dwg. 020460Y.
Start the engine.
The engine starts regularly.
YES
go to 2
NO
go to 3
2
- Select the menu on the "ERRORS"
function. Check whether there are any failures
relating to the "signals panel".
YES
go to 9
NO
go to 6
3
- Select the menu on the "ERRORS" function.
YES
go to 5
NO
go to 4
4
-
No failure detected.
GO
to 9
5
-
Proceed according to the indications detected.
6
- Select the menu on the "parameters"
function.
Check the number of
Lost synchronisations = 1 tooth
Lost synchronisations = > 1 tooth
YES
go to 8
NO
go to 7
7
- Indication = 1
-3
The stroke revolution signal is conforming
8
-
The value increases gradually over time if you insist trying to start the engine.
Check the circuit and the sensor.
GO
to 9
PGO BR-500 ENGINE
P.9-62
Revolution sensor
Содержание BR-500
Страница 1: ......
Страница 2: ...INDEX OF TOPICS TIME CHART 12 ...
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Страница 14: ...INDEX OF TOPICS PRIOR TO DELIVERY 11 ...
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Страница 33: ...PGO BR 500 ENGINE P 10 14 Automatic Transmission ...
Страница 59: ...PGO BR 500 ENGINE P 10 40 Flywheel Cover ...
Страница 61: ... Check that the blow by circuit reed closes properly PGO BR 500 ENGINE P 10 42 Flywheel Cover ...
Страница 65: ...PGO BR 500 ENGINE P 10 46 Flywheel Cover ...
Страница 67: ...PGO BR 500 ENGINE P 10 48 Flywheel Cover ...
Страница 240: ...INDEX OF TOPICS BRAKING SYSTEM 8 ...
Страница 245: ...INDEX OF TOPICS STEERING WHEEL AND SUSPENSIONS 7 ...
Страница 250: ...INDEX OF TOPICS VEHICLE ENGINE 6 ...
Страница 253: ...INDEX OF TOPICS VEHICLE ENGINE 6 ...
Страница 257: ...Transmission Gear box explosive diagram P 6 5 ...
Страница 258: ...P 6 6 ...
Страница 259: ...INDEX OF TOPICS ELECTRIC SYSTEM 5 ...
Страница 272: ...PGO BR 500 ENGINE P 5 14 ...
Страница 273: ...INDEX OF TOPICS COOLING SYSTEM 4 ...
Страница 281: ...INDEX OF TOPICS MAINTENANCE 3 ...
Страница 303: ...INDEX OF TOPICS OPERATION 2 ...
Страница 318: ...INDEX OF TOPICS CHARACTERISTICS 1 ...