Exciter Circuit, Checking

If customer complaint ``battery isn't being charged'' is received even though warning light comes on when ignition is switched On and goes out when ignition is turned Off, check exciter circuit as follows:

1. Verify that battery voltage is approximately 12 volts minimum, then charge if necessary.
2. Disconnect blue wire from alternator terminal 61.
3. Switch multimeter US 1119 or equivalent to 200 mA range.
4. Connect multimeter between disconnected blue wire and terminal 61.
5. Turn ignition switch to On position.
6. Current must fall between 150 and 185 mA.
7. If reading is lower than 150 mA, check blue wire between alternator and instrument panel or replace printed circuit in instrument cluster as is necessary.