M.39
TC 449 2011/2012 I.E.
TE 449 - 511 2011/2012 I.E.
TXC 449 - 511 2011/2012 I.E.
SMR 449 2011 I.E.
SMR 511 2011/2012 I.E.
H06304
1
H06302
1
H06303
Workshop Manual Ed. 03-2012
ELECTRICAL SYSTEM
Charging system inspections
Battery
Remove the saddle (as described in the relevant paragraph) to gain access to
the battery (1).
Disconnect the BLACK negative cable from the battery.
Measure current across the negative terminal of the battery and the negative
cable using an ammeter clamp. A reading greater than 0.5 mA (TE-SMR) and
0.2 mA (TXC-TC) indicates current draw by some utility.
If the vehicle is not used for long periods, it is recommended to
disconnect the battery from the electrical system.
Regulated voltage
Remove the saddle (as described in the relevant paragraph) to gain access to
the battery.
With the engine warmed up and running at slightly above 3000 rpm, measure
voltage across the positive and negative terminal of the battery using a meter
(the battery must be charged when performing this test). If reading is outside a
14.0÷14.5 V range, check generator and voltage regulator/rectifier as described
in the relevant paragraph.
Voltage regulator/rectifier inspection
With the ignition on and the battery charged (12.5-13 V), start the engine: if bat
-
tery voltage fails to rise (14 V) within the next two minutes, change the regulator
(1) as outlined in the relevant paragraph.
Voltage regulator
The voltage regulator (1) incorporates the diodes used to rectify the generator
current output.
It also incorporates an electronic device that adjusts charging voltage to battery
charge: if battery charge is low, charging voltage will be lower.
Do not disconnect the battery cables while the engine is running,
or the regulator will suffer irreparable damage.
Voltage regulator/rectifier wiring diagram
