Sidekick 4WD L4-1590cc 1.6L SOHC 0 TBI 8V (1990)
Malfunction Indicator Lamp: Description and Operation
Check Engine Light Circuit.
"CHECK ENGINE" light is located among the instrument cluster. It indicates each result of diagnosis done by ECM's self-diagnosis function. It also
lights under the conditions as described below regardless of Electronic Fuel Injection system condition.
^ When ignition switch is turned ON, engine is at a stop (When engine speed is lower than 500 r/min.) and diagnosis switch terminal is ungrounded,
"CHECK ENGINE" light turns ON for the purpose of light and its circuit check but turns OFF once engine is started (When engine speed is higher
than 500 r/min.) as far as Electronic Fuel Injection system is in good condition.
^ Only federal Spec. model except California and Canada has mileage sensor and cancel switch in its "CHECK ENGINE" light circuit. When mileage
reaches 50,000, 80,000 and 100,000 miles respectively (i.e. mileage sensor turns ON) "CHECK ENGINE" light turns ON even while engine is
running. This is to warn the driver that it is time for periodical inspection. In this case, turn OFF "CHECK ENGINE" light with its cancel switch upon
completion of inspection.
