(1) Disconnect the fuse EEI (1 5 A) for 10 sec. or more, with iG switch OFF.
(2) Initiate test mode (Connect terminal TE2 and E1 of DLC 1) with IG switch OFF.
(3) Start the engine and warm the engine up, with all ACC switch OFF.
(4) After the engine is warmed up, !et it idle for 3 min.
(5) After perform idling in @, perform sudden racing to 4,000 rpm three times.
(6) After perform sudden racing in @, perform driving at 31 – 60 mph (Engine speed 2,000
rpm) for 90 sec.
HINT: If a malfunction is detected the malfunction indication lamp will light up during step (6)
NOTICE: If the conditions in this test are not strictly followed, detection of the malfunction
will not be possible.
DIAGNOSTIC TROUBLE CODE DETECTION DRIVING PATTERN (Cont’d)
Purpose of the driving pattern.
(a) To simulate diagnostic trouble code detecting condition after diagnostic trouble code is recorded.
(b) To check that the malfunction is corrected when the repair is completed confirming that diagnostic
trouble code is no longer detected.
Air–Fuel Ratio Lean Malfunction
Malfunction: Open or Short in Heated Oxygen Sensor.
DTC
Air–Fuel Ratio Lean Malfunction
–ENGINE MFI SYSTEM
EG2–179
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