① It is forbidden to disconnect the battery from the circuit when the engine is running at high speed, so as to prevent the instantaneous overvoltage from damaging ECU and sensor.
② When the engine fails and the "Check Engine" warning light on the dashboard lights up, the battery cannot be disconnected from the circuit to prevent the fault code and related data information stored in the ECU from being cleared. Only after the self-diagnosis system calls up the fault code and related information and diagnoses the cause of the fault can the battery be disconnected from the circuit.
(3) To diagnose the cause of the fault and repair the electronic control system, turn off the ignition switch and remove the battery grounding wire. If you only check the electronic control system, just turn off the ignition switch.
(4) To jump start other vehicles or jump this vehicle with other vehicles, you need to turn off the ignition switch before removing the jumper.
⑤ When arc welding is carried out on the car body, the power supply of ECU should be disconnected first. Pay special attention when repairing the car body near ECU or sensor.
⑥ Unless otherwise specified in the test, ECU and sensor shall not be tested by pointer multimeter, but by high impedance digital multimeter. Automobile electronic control system is very sensitive to high temperature, high humidity and high voltage, so the following matters should be paid attention to when maintaining engine electronic control system:
① It is forbidden to disconnect the battery from the circuit when the engine is running at high speed, so as to prevent the instantaneous overvoltage from damaging ECU and sensor.
② When the engine fails and the "Check Engine" warning light on the dashboard lights up, the battery cannot be disconnected from the circuit to prevent the fault code and related data information stored in the ECU from being cleared. Only after the self-diagnosis system calls up the fault code and related information and diagnoses the cause of the fault can the battery be disconnected from the circuit.
(3) To diagnose the cause of the fault and repair the electronic control system, turn off the ignition switch and remove the battery grounding wire. If you only check the electronic control system, just turn off the ignition switch.
(4) To jump start other vehicles or jump this vehicle with other vehicles, you need to turn off the ignition switch before removing the jumper.
⑤ When arc welding is carried out on the car body, the power supply of ECU should be disconnected first. Pay special attention when repairing the car body near ECU or sensor.
⑥ Unless otherwise specified in the test, ECU and sensor shall not be tested by pointer multimeter, but by high impedance digital multimeter. Automobile electronic control system is very sensitive to high temperature, high humidity and high voltage, so the following matters should be paid attention to when maintaining engine electronic control system:
① It is forbidden to disconnect the battery from the circuit when the engine is running at high speed, so as to prevent the instantaneous overvoltage from damaging ECU and sensor.
② When the engine fails and the "Check Engine" warning light on the dashboard lights up, the battery cannot be disconnected from the circuit to prevent the fault code and related data information stored in the ECU from being cleared. Only after the self-diagnosis system calls up the fault code and related information and diagnoses the cause of the fault can the battery be disconnected from the circuit.
(3) To diagnose the cause of the fault and repair the electronic control system, turn off the ignition switch and remove the battery grounding wire. If you only check the electronic control system, just turn off the ignition switch.
(4) To jump start other vehicles or jump this vehicle with other vehicles, you need to turn off the ignition switch before removing the jumper.
⑤ When arc welding is carried out on the car body, the power supply of ECU should be disconnected first. Pay special attention when repairing the car body near ECU or sensor.
⑥ Unless otherwise specified in the test, ECU and sensor shall not be tested by pointer multimeter, but by high impedance digital multimeter. Automobile electronic control system is very sensitive to high temperature, high humidity and high voltage, so the following matters should be paid attention to when maintaining engine electronic control system:
① It is forbidden to disconnect the battery from the circuit when the engine is running at high speed, so as to prevent the instantaneous overvoltage from damaging ECU and sensor.
② When the engine fails and the "Check Engine" warning light on the dashboard lights up, the battery cannot be disconnected from the circuit to prevent the fault code and related data information stored in the ECU from being cleared. Only after the self-diagnosis system calls up the fault code and related information and diagnoses the cause of the fault can the battery be disconnected from the circuit.
(3) To diagnose the cause of the fault and repair the electronic control system, turn off the ignition switch and remove the battery grounding wire. If you only check the electronic control system, just turn off the ignition switch.
(4) To jump start other vehicles or jump this vehicle with other vehicles, you need to turn off the ignition switch before removing the jumper.
⑤ When arc welding is carried out on the car body, the power supply of ECU should be disconnected first. Pay special attention when repairing the car body near ECU or sensor.
⑥ Unless otherwise specified in the test, ECU and sensor shall not be tested by pointer multimeter, but by high impedance digital multimeter. Automobile electronic control system is very sensitive to high temperature, high humidity and high voltage, so the following matters should be paid attention to when maintaining engine electronic control system:
① It is forbidden to disconnect the battery from the circuit when the engine is running at high speed, so as to prevent the instantaneous overvoltage from damaging ECU and sensor.
② When the engine fails and the "Check Engine" warning light on the dashboard lights up, the battery cannot be disconnected from the circuit to prevent the fault code and related data information stored in the ECU from being cleared. Only after the self-diagnosis system calls up the fault code and related information and diagnoses the cause of the fault can the battery be disconnected from the circuit.
(3) To diagnose the cause of the fault and repair the electronic control system, turn off the ignition switch and remove the battery grounding wire. If you only check the electronic control system, just turn off the ignition switch.
(4) To jump start other vehicles or jump this vehicle with other vehicles, you need to turn off the ignition switch before removing the jumper.
⑤ When arc welding is carried out on the car body, the power supply of ECU should be disconnected first. Pay special attention when repairing the car body near ECU or sensor.
⑥ Unless otherwise specified in the test, ECU and sensor shall not be tested by pointer multimeter, but by high impedance digital multimeter. Automobile electronic control system is very sensitive to high temperature, high humidity and high voltage, so the following matters should be paid attention to when maintaining engine electronic control system:
① It is forbidden to disconnect the battery from the circuit when the engine is running at high speed, so as to prevent the instantaneous overvoltage from damaging ECU and sensor.
② When the engine fails and the "Check Engine" warning light on the dashboard lights up, the battery cannot be disconnected from the circuit to prevent the fault code and related data information stored in the ECU from being cleared. Only after the self-diagnosis system calls up the fault code and related information and diagnoses the cause of the fault can the battery be disconnected from the circuit.
(3) To diagnose the cause of the fault and repair the electronic control system, turn off the ignition switch and remove the battery grounding wire. If you only check the electronic control system, just turn off the ignition switch.
(4) To jump start other vehicles or jump this vehicle with other vehicles, you need to turn off the ignition switch before removing the jumper.
⑤ When arc welding is carried out on the car body, the power supply of ECU should be disconnected first. Pay special attention when repairing the car body near ECU or sensor.
⑥ Unless otherwise specified in the test, ECU and sensor shall not be tested by pointer multimeter, but by high impedance digital multimeter. Automobile electronic control system is very sensitive to high temperature, high humidity and high voltage, so the following matters should be paid attention to when maintaining engine electronic control system:
① It is forbidden to disconnect the battery from the circuit when the engine is running at high speed, so as to prevent the instantaneous overvoltage from damaging ECU and sensor.
② When the engine fails and the "Check Engine" warning light on the dashboard lights up, the battery cannot be disconnected from the circuit to prevent the fault code and related data information stored in the ECU from being cleared. Only after the self-diagnosis system calls up the fault code and related information and diagnoses the cause of the fault can the battery be disconnected from the circuit.
(3) To diagnose the cause of the fault and repair the electronic control system, turn off the ignition switch and remove the battery grounding wire. If you only check the electronic control system, just turn off the ignition switch.
(4) To jump start other vehicles or jump this vehicle with other vehicles, you need to turn off the ignition switch before removing the jumper.
⑤ When arc welding is carried out on the car body, the power supply of ECU should be disconnected first. Pay special attention when repairing the car body near ECU or sensor.
⑥ Unless otherwise specified in the test, ECU and sensor shall not be tested by pointer multimeter, but by high impedance digital multimeter. Automobile electronic control system is very sensitive to high temperature, high humidity and high voltage, so the following matters should be paid attention to when maintaining engine electronic control system:
① It is forbidden to disconnect the battery from the circuit when the engine is running at high speed, so as to prevent the instantaneous overvoltage from damaging ECU and sensor.
② When the engine fails and the "Check Engine" warning light on the dashboard lights up, the battery cannot be disconnected from the circuit to prevent the fault code and related data information stored in the ECU from being cleared. Only after the self-diagnosis system calls up the fault code and related information and diagnoses the cause of the fault can the battery be disconnected from the circuit.
(3) To diagnose the cause of the fault and repair the electronic control system, turn off the ignition switch and remove the battery grounding wire. If you only check the electronic control system, just turn off the ignition switch.
(4) To jump start other vehicles or jump this vehicle with other vehicles, you need to turn off the ignition switch before removing the jumper.
⑤ When arc welding is carried out on the car body, the power supply of ECU should be disconnected first. Pay special attention when repairing the car body near ECU or sensor.
⑥ Unless otherwise specified in the test, ECU and sensor shall not be tested by pointer multimeter, but by high impedance digital multimeter.