9-3 Convertible (9400) L4-2.0L Turbo (2.0 HOT) (2003)
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Charge Lamp/Indicator: Description and Operation
Charging Indicator Lamp
The charging indicator lamp tells the driver whether the generator is charging or not.
The lamp receives power from the main instrument unit and is grounded internally by the main instrument unit.
If the generator is not rotating or if it is not charging for any reason, pin 6 on the main instrument unit will be grounded via the regulator through the
generator field winding and the control module will turn on the lamp. The central warning lamp will come on at the same time and at engine speeds
above 310 rpm, MIU will send a request to SID to activate an acoustic signal.
While the generator is charging, connection D+ on the generator will be receiving the same voltage as B+, which means that the input on the MIU is
supplied with B+ voltage and the control module will turn off the lamp.
