Total OBD & ECU Auto Diagnostics

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(a) Connect the intelligent tester to the DLC3.

(b) Turn the ignition switch to ON and turn the tester ON.

(d) Switch the ECM from normal mode to check mode using the tester (see page ES-43).

(e) Start the engine and warm it up with all the accessories switched OFF.

(f) Drive the vehicle at between 38 mph and 75 mph (60 km/h and 120 km/h) and at an engine speed of between 1,400 rpm and 3,200 rpm for 3 to 5 minutes.


If the system is still malfunctioning, the MIL will be illuminated during step (f).

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