Operation CHARM: Car repair manuals for everyone.

Generator Lamp

The generator (battery) telltale is turned On by the cluster when it receives a command from the PCM. This indicates to the operator of the vehicle that there is a possible problem in the charging circuit.

The generator (battery) telltale indicator lamp will turn On, for approximately 3 seconds, during engine start-up until the PCM senses voltage output by the generator for a bulb check.