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1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM ES–15 ES BASIC INSPECTION When a malfunction is not confirmed by the DTC check, NOTICE: NG OK NG OK NG OK (a) Visually check that the air filter is not excessively contaminated with dirt or oil. NG OK NG 1 CHECK BATTERY VOLTAGE Result Proceed To 11 V or more OK Below 11 V NG CHARGE OR REPLACE BATTERY 2 CHECK WHETHER ENGINE WILL CRANK PROCEED TO PROBLEM SYMPTOMS 3 CHECK WHETHER ENGINE STARTS GO TO STEP 6 4 CHECK AIR FILTER REPLACE AIR FILTER 5 CHECK IDLING SPEED TROUBLESHOOT IDLING SPEED AND |