Layout Of The Ems Control Unit Terminals And Immobilizer; Control Unit Side; System Side; Ems Control Unit - PIAGGIO 500 cc Service Manual

Fuel injection

LAYOUT OF THE EMS CONTROL UNIT TERMINALS AND IMMOBILIZER

Representation of the control unit connector and the connector system side.

CONTROL UNIT SIDE

N° FUNCTION
1 THROTTLE POTENTIOMETER FEED (+5V)
2 -
3 DIGITAL INSTRUMENT (REVOLUTIONS COUNTER CONTROL) 16
4 ENGINE TEMPERATURE (+)
5 86 ELECTRICAL FAN ELECTROMAGNETIC SWITCH
6 ENGINE REVOLUTIONS SENSOR
7 EMS DIAGNOSIS CONNECTOR
8 -
9 EMS DIAGNOSIS CONNECTOR
10 EMS DIAGNOSIS CONNECTOR
11 THROTTLE POTENTIOMETER SIGNAL
12 ENGINE REVOLUTIONS SENSOR
13 INJECTOR CONTROL (NEGATIVE)
N° FUNCTION
1 -
2 IMMOBILIZER LED CONTROL (NEGATIVE)
3 BASE FEED (POSITIVE)
4 NEGATIVE
5 -
6 EMS CONTROL UNIT (SERIAL)
7 -
8 UNDER PANEL FEED (POSITIVE)
IMMOBILIZER AERIAL
IMMOBILIZER AERIAL
9 - 8
DECODER

EMS CONTROL UNIT

N° FUNCTION
14 STEPPER MOTOR
15 DIGITAL INSTRUMENT (FUEL INJECTION INDICATOR - NEGATIVE)
DECODER (SERIAL)
17 BASE FEED (POSITIVE)
18 AIR TEMPERATURE SENSOR (+)
19 85 ELECTROMAGNETIC SWITCH (PUMP-INJECTOR-H.V. COIL) (-)
20 H.V. COIL (NEGATIVE CONTROL)
21 STEPPER MOTOR
22 SENSORS FEED (-)
23 CONTROL UNIT NEGATIVE
24 STEPPER MOTOR
25 -
26 UNDER PANEL FEED (POSITIVE)

SYSTEM SIDE