Honda Accord engine fault warning lights suddenly lit The involved models: 2007 annual output of Guangqi Honda Accord sedan (CM4). Bulletin content: Some of the above models, engine fault warning lights suddenly lit phenomenon may occur. Concrete repair methods are as follows. (1) The maintenance staff to cars, Honda HDS fault diagnostic testing, found fault code P2238-air-fuel ratio (A / F) sensor circuit voltage low. (2) using the the Honda HDS fault diagnostic data capabilities Snapshot found that the current of the air-fuel ratio sensor is always maintained in the -2.86 mA, the air-fuel ratio sensor heater has been shut down, and then the work of the oxygen sensor is normal (Fig. 1). (3) according to the fault code overhaul, disconnect the engine control unit and the air-fuel ratio sensor connector, measuring the engine control unit connector A31 foot Ground and found no abnormalities. Try to replace the new and functional integrity of the air-fuel ratio sensor fault phenomenon remains. (4) can not determine whether the fault caused by the engine control unit, it can only continue on the line measurement, disconnect the connector of the air-fuel ratio sensor and turn the ignition switches, measuring the 1st foot (corresponding AFS-) Datie voltage 1.75 V 2 feet a the (corresponding AFS +) Datie voltage 2.12V, the AFS + AFS-potential difference of 0.47 V, 4 feet Datie voltage for the battery voltage, the voltages are normal. (5) The air-fuel ratio sensor of the connector is inserted back to start the vehicle, was measured again, the 4 feet of the air-fuel ratio sensor connector voltage of 14.5 V, normally. Measurement No. 3 feet voltage of 14.5 V, is not normal. Inspect the vehicle maintenance manual that the pin voltage at this time should be about 10V. (6) It can be determined, the engine control unit A10 of the foot, no heater for the air-fuel ratio sensor to provide the 10V voltage, no current flows through the air-fuel ratio sensor heater, data list displayed in the "air-fuel ratio heater off. Replace the engine control unit, Troubleshooting

The involved models: 2007 annual output of Guangqi Honda Accord sedan (CM4).
    Bulletin content:キセノンランプ Some of the above models, engine fault warning lights suddenly lit phenomenon may occur. Concrete repair methods are as follows.

    (1) The maintenance staff to cars, Honda HDS fault diagnostic testing, found fault code P2238-air-fuel ratio (A / F) sensor circuit voltage low.
    (2) using the the Honda HDS fault diagnostic data capabilities Snapshot found that the current of the air-fuel ratio sensor is always maintained in the -2.86 mA, the air-fuel ratio sensor heater has been shut down, and then the work of the oxygen sensor is normal (Fig. 1).

    (3) according to the fault code overhaul, disconnect the engine control unit and the air-fuel ratio sensor ecu チューニング connector, measuring the engine control unit connector A31 foot Ground and found no abnormalities. Try to replace the new and functional integrity of the air-fuel ratio sensor fault phenomenon remains.
    (4) can not determine whether the fault caused by the engine control unit, it can only continue on the line measurement, disconnect the connector of the air-fuel ratio sensor and turn the ignition switches, measuring the 1st foot (corresponding AFS-) Datie voltage 1.75 V 2 feet a the (corresponding AFS +) Datie voltage 2.12V,車LEDライト the AFS + AFS-potential difference of 0.47 V, 4 feet Datie voltage for the battery voltage, the voltages are normal.
    (5) The air-fuel ratio sensor of the connector is inserted back to start the vehicle, was measured again, the 4 feet of the air-fuel ratio sensor connector voltage of 14.5 V, normally. Measurement No. 3 feet voltage of 14.5 V, is not normal. Inspect the vehicle maintenance manual that the pin voltage at this time should be about 10V.
    (6) It can be determined, the engine control unit A10 of the foot, no heater for the air-fuel ratio sensor 自動車パーツ to provide the 10V voltage, no current flows through the air-fuel ratio sensor heater, data list displayed in the "air-fuel ratio heater off. Replace the engine control unit, Troubleshooting