Diamante V6-3.5L SOHC (2003)
Malfunction Indicator Lamp: Description and Operation
Among the on-board diagnostic items, a Service Engine Soon/ malfunction indicator lamp illuminates to notify the driver of the emission control items
when a malfunction is detected. However, when an irregular signal returns to normal and the powertrain control module judges that it has returned to
normal, the Service Engine Soon/Malfunction Indicator Lamp is switched off.
Moreover, when the ignition switch is turned off, the lamp is switched off. Even if the ignition switch is turned on again, the lamp does not illuminate
until the malfunction is detected. Here, immediately after the ignition switch is turned on, the Service Engine Soon/Malfunction Indicator Lamp is lit for
five seconds to indicate that the Service Engine Soon/Malfunction Indicator Lamp operates normally.
