APRILIA MSS Mana GT ABS Service Station Manual page 94

Electrical system
Pin-out:
1. Negative signal
2. Positive signal
THE CONNECTION DIAGRAMS ARE IN THE ELECTRICAL SYSTEM SECTIONS; PAY ATTENTION
TO THESE DIAGRAMS AS THEY SHOW THE CONNECTOR/COMPONENT AS VIEWED FROM
THE CABLE HARNESS SIDE, THAT IS LOOKING AT THE CABLES WHEN GOING OUT OF THE
"MAIN" CABLE HARNESS AND INTO THE CONNECTOR/COMPONENT.
CAUTION
BEFORE CARRYING OUT ANY TROUBLESHOOTING, CAREFULLY READ THE GENERAL TROU-
BLESHOOTING CONCEPTS FOR ELECTRICAL DEVICES AT THE BEGINNING OF THE CHECK
AND CONTROL SECTION IN THE ELECTRICAL SYSTEM CHAPTER.
AXONE: FUEL INJECTION SYSTEM
PARAMETERS
Engine rpm
(rpm)
Engine revolutions per minute: the minimum value is set by the control unit and cannot be adjusted.
STATUSES
Synchronisation
Example value:Synchronised / Not synchronised
It indicates if the control unit detects the revolution sensor signal correctly.
ELECTRICAL ERRORS
Engine revolution sensor P0335 - open circuit
Error cause:
•
An interruption in the sensor circuit has been detected, from PIN 25 to PIN 35 of connector
A (BROWN).
Troubleshooting:
•
Check the sensor connector and the injection control unit connector A (BROWN): if it is not
OK, restore; if it is OK, check continuity of the two cables: if there is no continuity, restore
the cable harness; if there is continuity, check the interruption on the sensor and replace it
CAUTION
IF THE ELECTRIC CIRCUIT IS SHORT-CIRCUITED, NO ERROR IS DISPLAYED. CHECK THE
SENSOR ELECTRICAL SPECIFICATIONS: IF IT IS NOT THE CORRECT ONE, REPLACE THE
SENSOR. IF IT IS THE CORRECT ONE, CHECK INSULATION FROM POWER AND GROUND
CONNECTION OF BOTH CABLES OF PINS 1 AND 2. PERFORM THE TESTS FROM THE SENSOR
CONNECTOR TO THE SENSOR. IF THEY ARE NOT OK, RESTORE THE CABLE HARNESS/RE-
PLACE THE SENSOR. IF OK, PERFORM THE TEST FROM PINS 25 AND 35 OF THE MARELLI
CONTROL UNIT ENGINE CONNECTOR A (BROWN) TO THE CABLE HARNESS AND REPLACE
THE LATTER.
ELE SYS - 94
MSS Mana GT ABS