Chevrolet Cruze 10-16 (1.4L/1.8L) System Wiring Diagrams

Wiring diagrams Chevrolet Cruze 2010-2016 with engines 1.4 and 1.8. Engine and transmission wiring diagrams, sensor locations, Designations on electrical equipment diagrams. Engine power system. Ignition and battery charging system Electric fans of the heating (air conditioning) and interior ventilation systems

Automatic A/C Circuit Download
Manual A/C Circuit Download
Anti-lock Brakes Circuit Download
Forced Entry Circuit Download
Pass-Key Circuit Download
Body Control Modules Circuit Download
Computer Data Lines Circuit Download


Cooling Fan Circuit Download
Cruise Control Circuit Download
Defoggers Circuit Download
Electronic Power Steering Circuit Download
1.4L VIN 9, Engine Performance Circuit Download
1.8L VIN H, Engine Performance Circuit Download
Backup Lamps Circuit Download
Exterior Lamps Circuit Download
Ground Distribution Circuit Download
Headlights Circuit Download
Horn Circuit Download


Instrument Cluster Circuit Download
Courtesy Lamps Circuit Download
Instrument Illumination Circuit Download
Navigation Circuit, W/ Amplifier Download
Navigation Circuit, W/O Amplifier Download
Parking Assistant Circuit Download
Power Distribution Circuit Download
Power Door Locks Circuit Download
Electrochromic Mirror Circuit Download
Power Mirrors Circuit Download
Driver Power Seat Circuit Download
Heated Seats Circuit Download
Power Top/Sunroof Circuit Download
Power Windows Circuit, W/ Express Up/Down Download
Power Windows Circuit, W/O Express Up/Down Download


Radio Circuit, W/ Amplifier Download
Radio Circuit, W/O Amplifier Download
Ignition Lock Solenoid Circuit Download
Shift Interlock Circuit Download
Steering Lock Circuit Download
Charging Circuit Download
Starting Circuit Download
Supplemental Restraints Circuit Download
Transmission Circuit Download
Trunk Release Circuit Download
Warning Systems Circuit Download
Wiper/Washer Circuit Download

Chevrolet Cruze ECU

An electronic control unit (ECU) is a common name for all electronic devices that collect and analyze information from sensors to transmit a signal to vehicle systems. The use of an ECU allows you to optimize the operation of controlled systems.


To optimize engine performance, a control unit is used to control ignition, fuel supply, throttle position, cooling system, etc. The engine control unit for the Chevrolet Cruze 1.4 and 1.8 is located under the hood, next to the battery.


The automatic transmission control unit determines the transmission mode, shifts gears and regulates the oil supply. To control the parameters, the device uses embedded data and collected information from sensors. The automatic transmission control unit is located under the valve body cover.


Three types of storage devices are used for the ECU software:

  • RAM for working with data;
  • a device with operating parameters recorded on it;
  • device for entering temporary data.


Depending on the type of computer, failure may be due to:

  • improper installation of the device;
  • errors in software settings;
  • water damage during engine wash;
  • damage due to insufficient cooling of the oil in the transmission;
  • the appearance of cracks on the body of the device that caused moisture to enter;
  • lighting up the battery from a car with the engine running;
  • other mechanical damage.
  • To eliminate malfunctions caused by mechanical damage, in most cases, replacement of the computer is required.


Diagnostics and replacement of the engine control unit

After detecting a malfunction, it is necessary to diagnose the equipment. You can do this at a service center or yourself. Self-diagnosis requires a special device (oscilloscope) to connect to the block connector.


In the event that it is not possible to purchase it, a computer with an installed program (selected depending on the computer model) and a cable that supports the KWP2000 protocol will do.



  • Connect the device or computer to the block connector.
  • Turn the ignition key (no need to start the engine).
  • Download the program and run diagnostics.


To replace a faulty unit with a new one, you need:

  • Stop the engine.
  • Disconnect the negative battery terminal.
  • Turn off power to the control module.
  • Remove old device.

After replacing the equipment, you need to program it (prescribe the Vin code). The procedure for setting up depends on the type of engine. The process is described in detail in the vehicle diagnostic manual.


Replacing the automatic transmission control unit

To replace a defective device, you must:


Drain the oil first.

Disconnect the AC connector.

Disconnect the radiator pipes (13 mm wrench).

Remove the valve body cover (8 mm wrench).

Remove old device.

After installing a new device, you need to register a Vci code in it.

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