PIAGGIO 500 cc - Fuel Injection - Coolant Sensor Circuit Isolation and Tension Checks

Fuel injection
9 - 77
9
Measure the tension at terminals 4 and 22;
4-22 = V (as per table)
Check that the sensor circuit is isolated
from the earth.
4-23 = Ω infinity (>1MΩ)
22-23 = Ω infinity (>1MΩ)
NO
YES
Reset or replace the harness
Check the air temperature lines and
throttle valve position.
Connect the special tool 020481Y to the
control unit.
Set ignition to "ON" with switch on "RUN" and side
stand raised.
NO
TENSION TEMPERATURE
X V -10° C
X V 0
X V +10° C
X V +20° C
X V +30° C
X V +80° C
NO
YES
Measured value = 5±0,2 V
Repeat continuity
controls of the harness
and sensor.
Measured value = 0 V
Repeat controls of earthing
isolation of the circuit and
the sensor.
YES
YES
NO