Car troubleshooting Chevrolet Lanos 1

Table of engine and its systems faults
The crankshaft does not turn with the starter List of possible faults Diagnostics Methods of elimination The battery is discharged The voltage at the battery...

Compression measurement
We perform a compression test to provide a general assessment of the technical condition of the cylinder-piston group parts and the engine valve mechanism. We...

Checking the starter circuit
If the starter does not work when the ignition key is turned to the "START" position, there may be a malfunction of both the starter itself and its activation...

Checking the ignition coil and its circuits
We release the pressure in the engine fuel system. We remove the high-voltage wire tip from the spark plug and insert a working spark plug into it. We position...

Checking the crankshaft position sensor and its circuits
If the crankshaft position sensor or its circuits are faulty, the engine will not start or run. With the ignition off, disconnect the engine management system...

Checking the throttle position sensor and its circuits
A faulty throttle position sensor results in unstable engine operation, reduced engine power, jerks and dips when driving the vehicle. With the ignition off,...
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Checking the phase sensor and its circuits
If the phase sensor or its electrical circuits are faulty, the electronic unit of the engine control system switches the system to the mode of unphased fuel...

Checking the coolant temperature sensor and its circuits
With the ignition off, disconnect the engine management system wiring harness connector from the coolant temperature sensor (see Removal the coolant...

Checking the intake manifold air temperature sensor
With the ignition off, disconnect the engine control system wiring harness connector from the air temperature sensor (see Removal the intake manifold air...

Checking the speed sensor
With the ignition off… …disconnect the engine management system wiring harness connector from the speed sensor. We connect the tester probes to terminals "A"...

Checking the Manifold Absolute Pressure Sensor
With the ignition off, disconnect the engine management system wiring harness connector from the manifold absolute pressure sensor (see Removal the absolute...

Checking injectors and their control circuits
We check the performance of the injectors when we detect malfunctions in the engine operation. We begin checking the injector control circuits by checking the...

Checking the pressure in the engine fuel system
To check the pressure in the engine fuel system, you need a device that you can make yourself. This will require a pressure gauge with a measurement range of...

Checking the fuel pump activation circuit
If the fuel pump does not turn on when the ignition is turned on (its operation can be controlled by ear) — there may be a malfunction of both the fuel pump...

Transmission, chassis, steering and braking system
Cause of malfunction Methods of elimination The clutch is slipping (when you press the gas pedal sharply, the engine revs up, but the car barely accelerates)...

Electrical equipment fault table
Battery Cause of malfunction Methods of elimination The battery is discharged. The starter does not turn the engine crankshaft or turns it slowly. The lamps...

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