Battery Recharge Circuit; Battery Voltage - APRILIA TUAREG 660 Service Station Manual

Electrical system
•
The second key is stored and you will
be asked to enter the third key (if you
have one). The same operation will be
repeated to store the fourth key.
•
To complete AND end the memorisa-
tion procedure, set key to "OFF".
•
You should then test the correct func-
tioning of all keys stored.

Battery recharge circuit

FOREWORD
The recharge systems my show functional anomalies of two types:
•
Excessive recharge.
•
Missing or partial recharge.
For problems related to excessive charge (frequent bulb burns, excessive water consumption for the
conventional batteries, activation of the high voltage warning lamp), check the set voltage.
For anomalies related to missing or partial recharge, in most cases, the diagnostic need is generated
due to the start-up difficulty experienced by the user, due to reduced start-up rpm.
The recharge system is involved in maintaining the optimal battery change; however, it is not the only
factor, because the use methods (reduced mileage, idle stop and high number of start-ups), together
with the self-discharge are important negative variables as well.
Regarding these aspects relating to the energy balance of the vehicle, it is important to guarantee the
correct idle speed, especially for those versions with carburettor, for which the system does not establish
a value.
For vehicles that have been used for a long time at idle speed, a speed close to maximum speed within
the accepted range is preferred (1650-1700 rpm for 2 cylinders in "V" and 1800-1850 rpm for engines
with 4 cylinders in "V").
Proceeding with the functional checks of the recharge system and battery, it is recommended to start
with the static checks with the vehicle cooled down.

BATTERY VOLTAGE

Check the battery voltage using a digital multimeter.
The zero load voltage analysis with the battery in standby (15 min.) may offer useful information, but
not a certain evaluation of the good performance of the battery.
•
≥ 12.8 V voltage: The battery has been recently completely charged.
•
12.5-12.7 V voltage: The battery is normally charged.
•
11.5-12.4 V voltage: The battery is more or less discharged and needs to be recharged.
ELE SYS - 112
TUAREG 660