General Description

DESCRIPTION
The engine has an ECM to control major systems such as fuel control, ignition control, idle air control system, etc. Additionally, the ECM provides a self-diagnosis function to help troubleshoot malfunctions in any of these systems.
Malfunction indicator lamps have been adopted to indicate system malfunctions. These lights blink under the following conditions:




1) When ignition switch is turned "ON" (for bulb check).
2) When systems related to emission performance malfunction in Diagnostic Test Mode I (with engine running).
^ This malfunction indicator lamp always illuminates and is synchronous with red LED.




3) When a malfunction is detected regarding the self-diagnostic items listed in the table.
^ The malfunction indicator lamp will turn off when normal operation is resumed. Diagnostic Test Mode Ill memory must be cleared as the contents remain stored.
4) When camshaft position sensor or CPU of ECM malfunctions and fail-safe system operates during engine rotation.




ECM LED
In the ECM, the Green and Red LED's have been adopted to monitor the self-diagnostic functions.




SELF-DIAGNOSTIC FUNCTION