Tracker 4x4 L4-1.6L VIN 6 (1995)
NOTICE: If a malfunction occurs in the EGR system, while the engine is running, the MIL remains lit. That is, once an EGR malfunction is
detected, the MIL will remain lit with the engine running regardless if the trouble is present or not, until the necessary repairs have been made.
Only the ignition signal circuit (DTC 41) is not stored in backup memory of the ECM. (In other words, even if the ECM has detected trouble in the
ignition signal circuit, once the ignition switch is turned to "LOCK," DTC 41 will not be indicated when the diagnostic request terminal is
grounded and ignition switch is turned "ON.") Therefore, to check for DTCs when the engine fails to start, crank the engine and then ground the
diagnostic request terminal with ignition switch in the "ON" position.
FAIL-SAFE FUNCTION
When a malfunction occurs within the SFI system, the ECM maintains control over the fuel injector, IAC valve etc., on the basis of the calculated
signals and/or backup program prestored within the ECM.
This function is called the "Fail-Safe Function." Thus, with this function, a certain level of engine performance is available even when a failure
occurs, thus avoiding complete disability in engine performance.
FAIL-SAFE SYSTEMS
The systems covered are as follows:
^
Engine Coolant Temperature sensor.
^
Throttle Position sensor.
^
Mass Air Flow sensor.
^
Central Processing Unit of ECM.
