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EC-362 < DTC/CIRCUIT DIAGNOSIS > [HR16DE] P117A AIR FUEL RATIO • Always drive vehicle at a safe speed. NOTE: • Drive the vehicle at approximately 88 km/h (55MPH) allows easy diagnosis. • Keep the accelerator pedal as possible during cruising. 3. Check “SYSTEM 1 DIAGNOSIS A B1” indication. YES >> GO TO 5. NO >> GO TO 2. 5. PERFORM DTC CONFIRMATION PROCEDURE-3 Check 1st trip DTC. YES >> Proceed to . NO >> INSPECTION END 6. PERFORM DTC CONFIRMATION PROCEDURE-4 Without CONSULT 1. Start the engine and warm it up to normal operating temperature. 2. Drive vehicle under the following conditions for at least 5 consecutive seconds. CAUTION: • Always drive vehicle at a safe speed. NOTE: • Drive the vehicle at approximately 88 km/h (55MPH) allows easy diagnosis. • Keep the accelerator pedal as possible during cruising. 3. Check 1st trip DTC. YES >> Proceed to . NO >> INSPECTION END Diagnosis Procedure INFOID:0000000009555273 1. CHECK FOR INTAKE AIR LEAK 1. Stop engine and check the following for connection. - Air duct - Vacuum hoses - PCV hose - Intake air passage between air duct to intake manifold 2. Start engine and let it idle. 3. Listen for an intake air leak after the mass air flow sensor. YES >> GO TO 2. NO >> Repair or replace error-detected parts. 2. CHECK EXHAUST GAS LEAK ENG SPEED 1,000 – 1,250rpm COOLAN TEMP/S More than 80 °C (176°F) B/FUEL SCHDL 4 – 8 msec Selector lever D position SYSTEM 1 DIAGNOSIS B B1 PRSENT Engine speed 1,000 – 1,250 rpm Calculated load value 26 – 46 % Selector lever D position |