APRILIA MSS Mana GT ABS Service Station Manual page 126

Electrical system
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: AUTOMATIC TRANSMISSION system
PARAMETERS
Driven pulley rotation
Example value: rpm
To make sure that the read value is correct, check its status in the Device Status screen page.
STATUSES
Driven pulley rotation
Example values: Invalid data / Valid data
If the "Invalid Data" message is displayed, it means that the parameter value in the Engineering pa-
rameters screen page is not correct.
ERRORS
Driven pulley rotation sensor Code 9004 - no signal/ signal not valid/ below minimum threshold.
Error cause
•
If there is no signal: detects an interruption of the electrical circuit to PINs B3 and B6. If signal
is not valid: variable signal with excess speed or non variable if below minimum threshold:
voltage equal to zero has been detected at PIN B3.
Troubleshooting
•
If there is no signal: check the transmission ECU connector and the sensor connector: if it
is not OK, restore; if it is OK, check the continuity of the PIN 1 cable between the transmission
ECU connector and the sensor connector: if it is not OK, restore; if it is OK, check the con-
tinuity of the sensor circuit (PINS 1 and 2 of sensor connector): if it is not OK, replace the
sensor; if it is OK, check the continuity between PIN 2 of the sensor connector and PIN B6
of the transmission ECU connector: if it is not OK, restore the cable harness; if it is OK, check
with key set to key ON, that PIN B6 of the transmission ECU does not have continuity with
the ground connection, and then replace the transmission ECU (in this case the Vehicle
speed sensor error (Code 9003), no signal, should also be present)
•
If signal is not valid: check the sensor resistance, from the transmission ECU connector,
between PINS B6 and B6: if it is not OK, replace the sensor; if it is OK, with key set to key
ON, check the voltage at PIN B3: if voltage is other than zero, see Phase 1; if voltage is
equal to zero, check in the same way with running engine: if the non variable voltage is
above zero, replace the sensor; if alternating voltage is excessively below approximately
ELE SYS - 126
MSS Mana GT ABS