APRILIA MSS Mana GT ABS Service Station Manual page 85

MSS Mana GT ABS
•
If shorted to positive: excessive voltage has been detected at PIN 1 of connector B (BLUE).
Troubleshooting
•
If shorted to positive: the malfunction is detected with an activated brake (12 V voltage de-
tected at PIN 23 of connector B) and the start-up switch is pressed, if the battery voltage is
not reduced (due to the absorption by the drive coil of the start-up control relay No. 3) now
the ECU reads that the pink/brown cable is shorted to battery. Restore the cable harness (if
the short circuit is in the cable harness) or the relay (if the short circuit is inside the relay).
NOTE
IN CASE OF SHORT TO GROUND / OPEN CIRCUIT NO ERROR WILL APPEAR: SEE THE TROU-
BLESHOOTING CHAPTER, THE ENGINE DOES NOT START.
Checking the idle speed adj.system
IDLE REGULATION SYSTEM CHECK
Function
It checks the air flow in the inlet manifolds bypass-
ing the throttle valve.
Operation / Operating principle
The opening position is set by the injection control
unit and is performed by means of a Stepper elec-
trical motor.
Level in wiring diagram:Throttle and idle motor
Location:
•
on the vehicle: on throttle body
•
connector: on throttle body
Electrical characteristics:
•
between PIN A and PIN D: 50 Ohm +/-
10 %
•
between PIN B and PIN C: 50 Ohm +/-
10 %
Pin-out:
•
A - 17
•
B - 19
•
C - 9
•
D - 18
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.
Electrical system
ELE SYS - 85