Diagnosis Instrument: Errors; Electrical Characteristics; Pin Out; Variable Geometry Intake P0447 - APRILIA RSV4 R Service Station Manual

Electrical system
•
connector of the electrical motor cable
to the engine cable harness: outside
the filter box next to the rear upper in-
jectors.

Electrical characteristics:

Electrical motor resistance. 4.5 +/- 0.5 Ω; PIN 1:
0V normal, Vbatt fault PIN 2: 0V ducts control
down, 5V ducts control up.

Pin out:

1. Control unit fault
2. Control from the injection ECU
3. Key ON (Vbatt)
4. Engine +
5. Engine -
6. Ground connection
CAUTION
BEFORE CARRYING OUT ANY TROUBLESHOOTING,
CAREFULLY READ THE GENERAL TROUBLESHOOTING
CONCEPTS FOR ELECTRICAL DEVICES AT THE BEGIN-
NING OF THE CHECK AND CONTROL SECTION IN THE
ELECTRICAL SYSTEM CHAPTER.
DIAGNOSIS INSTRUMENT: STATUSES
Variable geometry intake
•
not active/active
NOTE: It indicates whether the control unit has sent the command to the variable geometry control unit
to lift the ducts.
DIAGNOSIS INSTRUMENT: ACTIVATION
Variable geometry intake control
NOTE: The injection ECU sends the command to the variable geometry control unit to lift the ducts. In
the version PGDS 3.0.0 for Navigator, the command works once only, then it is used to take the key to
OFF and wait if communication with the control unit is lost.

DIAGNOSIS INSTRUMENT: ERRORS

Variable geometry intake P0447

•
shorted to positive / shorted to negative / open circuit / signal not valid.
Error cause
•
If shorted to positive: excessive voltage has been detected at PIN 62. If shorted to negative:
no voltage has been detected. If the circuit is open: an interruption has been detected. If
signal is not valid: PIN 76 detects a battery voltage set by the variable geometry control unit
ELE SYS - 152
RSV4 R