Diagnostic System

The MCU of the CEC system is equipped with a self-diagnostic system which detects system failures or abnormalities. When a fault is detected in the CEC system, the MCU will cause the "CHECK ENGINE" lamp on instrument panel to flash a trouble code. Trouble codes will only be displayed when a malfunction exists. The MCU does not have a long term memory; therefore, all faults detected MUST be corrected. Trouble codes will be flashed 5 times. The series of code flashes will not be repeated.

NOTE: Trouble codes are lost when ignition is turned off.

As a routine bulb and system check, the "CHECK ENGINE" lamp will be illuminated when the ignition is turned on (engine off). This indicates that diagnostic system is functioning properly. When the engine is started, the "CHECK ENGINE" lamp should go out after a few seconds.