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Chery T11 Service Manual Electric Injection System 25 5) Limp-home For some identified important failures, when their duration exceeds the setting stabilized time, the ECU will apply appropriate software countermeasure to maintain the operation of the engine and enable the vehicle not to stop in its way. 6) Failure Alarm MT 20U electronic fuel injection system is equipped with a failure lamp. When some important parts, such as the ECU, intake manifold absolute pressure sensor, throttle position sensor, coolant temperature sensor, knock sensor, oxygen sensor, fuel injector, two drivers of idle actuator stepper motor, A/C relay, fan relay and etc, fail to operate and the corresponding failure flags are set, the ECU will enable the failure lamp to flash and give alarm to warn the owner of the vehicle that your vehicle has already entered into the failure mode, till the failure flag is reset. 7) Definition of Diagnosis Connector Interface
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8) Failure Readout by Engine Failure Lamp When the engine system or its components failure occurs during the operation of engine, the engine failure lamp will light automatically to remind the driver to examine and repair his/her vehicle in time. During the emergency failure handling, you also may conduct some special operations to enable the engine failure lamp to flash frequently so as to read the engine failure code, which is the most economical means to obtain the failure code. Its operation method is as follows: Examine and Confirm: a. The voltage of battery shall ensure the engine gets its startup speed; b. The engine and the whole vehicle’s accessories shall be in the state of shutdown; c. The throttle is fully closed; d. The transmission is placed in the neutral gear;
Definition of Diagnosis Connector Interface 8 NULL 16 +12 V 7 Communication 15 NULL 6 NULL 14 NULL 5 Earth Wire 13 NULL 4 Earth Wire 12 NULL 3 NULL 11 NULL 2 NULL 10 NULL 1 Diagnosis Request 9 NULL
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