Service Engine Soon/Malfunction Indicator Lamp

DIAGNOSTIC TEST MODE




SERVICE ENGINE SOON/MALFUNCTION INDICATOR LAMP
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.

P0100 - P0173:

P0201 - P0765:

P1400 - P1795:

NOTE: After the Powertrain Control Module (PCM) detects a malfunction, the Service Engine Soon/Malfunction Indicator Lamp illuminates when the engine is next turned on and the same malfunction is re-detected.

However for items marked with a "*" the service engine soon/malfunction indicator lamp illuminates on the first detection of the malfunction.

NOTE: After the Service Engine Soon/Malfunction Indicator Lamp illuminates, it will be switched off under the following conditions.
- When the PCM monitored the powertrain malfunction Three times* and detected no malfunction.
*: In this case, one time indicates from engine start to stop.
- For misfiring or a fuel trim malfunction, when driving conditions (engine speed, engine coolant temperature, etc.) are similar to those when the malfunction was first recorded.

NOTE: When a problem is detected in the vacuum control solenoid valve, ventilation control solenoid valve, crank angle sensor or any of the above items, fraction control is not performed .

CAUTION: If the Service Engine Soon/Malfunction Indicator Lamp illuminates because of a malfunction of the PCM, transmission between the scan tool and the PCM cannot occur. In this case, the diagnostic trouble code cannot be read.

NOTE: Sensor 1 indicates the sensor mounted at a position closest to the engine and sensor 2 indicates the sensor mounted at the position second closest to the engine.

NOTE: Bank 1 indicates the right bank side cylinder and bank 2 indicates the left bank side cylinder.