APRILIA SHIVER 900 Service Station Manual page 136

Electrical system
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Electrical fault in sensor or wiring harness.
Troubleshooting:
•
Check the sensor connector and the ABS control unit connector. If they are not OK, restore
the connectors. If they are OK, check continuity of the yellow/brown cable between PIN 2
of the sensor on the wiring harness side and PIN 11 of the ABS control unit connector. If
there is no continuity, restore them. If there is, PIN 2 of the sensor on the wiring harness
side, with the sensor disconnected and key set to ON, must have 12V voltage approximately:
if there is no voltage, check PIN 2 for continuity with the vehicle ground connection: if it is
grounded, restore the wiring harness. If OK, replace the control unit. If PIN 2 has approx.
12 V, check continuity of the yellow cable between PIN 1 of the sensor on the wiring harness
side and PIN 12 of the ABS control unit connector. If this is not OK, restore the wiring har-
ness. If it is OK, replace the sensor.
P2158 Rear wheel speed sensor/signal
•
Connect to the ABS control unit diagnosis.
LOGIC ERRORS
Engine speed sensor
5DA1 the signal changes in intermittent manner
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faulty sensor or signal interference.
Troubleshooting:
•
Check speed sensor retainer. If it is not OK, restore it. If it is OK, check if the tone wheel is
dirty, deformed or wrongly fixed. If any of this happens, replace the tone wheel. Otherwise,
replace the speed sensor.
5DA2 the signal becomes weak periodically
•
Possible tone wheel fault due to deformations or dirt; the surface of the wheel bearings may
be deteriorated. In very rare cases, abnormal tone wheel vibrations.
Troubleshooting:
•
Check if the tone wheel is dirty, deformed or wrongly fixed. If the tone wheel is not OK,
replace it. If it is OK, check for possible faults in the wheel bearings and if it is not OK, replace
the bearings.
5DA3 no signal or speed to low compared to the front wheel
•
Faulty sensor or missing sensor/tone wheel. Or excessive distance between the sensor and
the tone wheel or tone wheel with wrong number of teeth.
Troubleshooting:
•
Check that the speed sensor and the tone wheel are installed. If they are not, install them.
If they are, check the speed sensor retainer. If it is not OK, restore it. If it is, check if the tone
ELE SYS - 136
SHIVER 900