Where is the Chevrolet Sail ecm?

Chevrolet Sail ecm is located in the engine compartment near the co-pilot.

Engine control module (ECM) is the control center of throttle actuator control (TAC) system. The engine control module judges the driver's intention and then calculates the corresponding throttle response. ECM also detects its own faults, sensors and actuators, serial data lines and MIL circuits. When a fault is detected, the ECM will remember the corresponding fault code and take corresponding measures.

The calibration program of engine control is stored in EEPROM, which is a permanent memory welded to ECM and cannot be replaced separately. When replacing ECM, the new ECM must be programmed according to the configured model before it can be used.

Automobile engine control module function

Engine control module can provide 5V or 12V voltage to each sensor or switch, which is realized by adjusting power supply to the engine control module through feedback resistor. In some cases, the ordinary voltmeter used in the repair shop will lead to inaccurate reading because of its low impedance. Therefore, it is required to use a digital multimeter with an input impedance of at least 10MQ to ensure accurate voltage reading.

The engine control module controls the grounding or power supply circuit through transistors or devices called output drive modules, thus controlling the output voltage. The automobile engine control module is located in the engine compartment and is the control center of the engine control system. The automobile engine control module also carries out diagnostic tests on various components of the system, and can identify operational faults and report them to the driver through the fault indicator light.