Car engine management system VAZ-2104

All articles on the device and repair of components and assemblies of the engine control system for VAZ-2104 Zhiguli (station wagon) and their modifications.

Description of the design of the engine control system
Elements of the engine management system: 1 - diagnostic connector; 2 - tachometer (if installed); 3 - Engine management system malfunction indicator lamp; 4 - throttle position...

Precautions when repairing the engine management system
Warning! Do not touch the ECU terminals with your hands. The engine management system is microprocessor-based, and the ECU electronic components may be damaged by electrostatic...

Engine Management System Fuses and Relays — Replacement
Attention! All work related to replacing fuses and relays must be performed only after disconnecting the wire from the battery terminal. Attention! Before replacing a fuse, it is...

Electronic control unit (ECU) — removal and installation
Attention! You can disconnect the wiring harness connector from the ECU only after disconnecting the wire from the battery terminal. Removal 1. Prepare the vehicle for operations...

Crankshaft Position Sensor — Checking and Replacing
To complete the work you will need a multimeter. Removal 1. Prepare the vehicle for operations (see " Preparing a car for maintenance and repair "). 2. Having released the...

Coolant Temperature Sensor — Checking and Replacing
To perform the work you will need: a multimeter, a thermometer (with a measurement limit of at least 100°C), a small heat-resistant container with a capacity of about 0.5 l for...

Throttle Position Sensor — Checking and Replacing
To complete the work you will need a multimeter. 1. Prepare the vehicle for the operation (see " Preparing a car for maintenance and repair "). 2. Release the wiring harness...

Mass Air Flow Sensor — Checking and Replacing
To complete the work you will need a multimeter. 1. Prepare the vehicle for operations (see " Preparing a car for maintenance and repair "). 2. Press the clamps to disconnect the...

Oxygen Concentration Sensor — Checking and Replacing
Attention! The sensor is installed in the exhaust pipe, which heats up to a high temperature when the engine is running. To avoid burns, check the oxygen concentration sensor and...

Speed sensor — removal and installation
Removal 1. Place the vehicle on an inspection pit or overpass (see " Preparing a car for maintenance and repair "). 2. Using a slotted screwdriver, loosen the nut with a knurled...

Ignition Coil — Checking and Replacing
To complete the work you will need a multimeter. 1. Prepare the vehicle for operations (see " Preparing a car for maintenance and repair "). 2. Having released the retainer, we...

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More articles from other manuals on VAZ cars:
➠ Power unit: Control system VAZ-2110 (1995-2007)
➠ Power unit: Control system VAZ-2115 (1997-2012)
➠ Power unit: Control system VAZ-21214 (1994-2006)
➠ Power unit: Control system VAZ-2107 (1982-2012)

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