Vehicle Troubleshooting Renault Scenic 1

Determination of engine malfunctions and their elimination
If the engine does not start, then gradually narrow the range of troubleshooting. To start the engine, two basic conditions must be met: the air-fuel mixture must enter the cylinders, and there must be an ignition spark...

Determination of malfunctions of the engine lubrication system and their elimination
After switching on the ignition, the control lamp does not light up Faulty oil pressure regulator Turn on the ignition, disconnect the wire from the oil pressure sensor and connect it to «mass» (-). If the control lamp...

Determination of malfunctions of the engine cooling system and their elimination
The temperature of the coolant is too high, the arrow of the temperature gauge is in the red range, the control lamp is on Too little coolant in circulation system The fluid in the expansion tank must be between the...

Possible malfunctions of the heating system, their causes and remedies
Fan not working Fan motor fuse blown Check fuse, replace if necessary. Faulty fan switch Remove and check the switch. Faulty fan motor Check if voltage is being supplied to the blower motor with the ignition on and the...

Determination of malfunctions of the ignition system and their elimination
Make sure the spark plugs are producing a spark. To do this, unscrew the candles, put tips on them and bring the candle to «mass» (-), while holding the tip or high voltage wire with insulated pliers. Have an assistant...

Determination of malfunctions of the gasoline injection system and their elimination
Before searching for the cause of a malfunction, the following conditions for troubleshooting must be met, namely: 1. Wrong actions when starting the engine are excluded. Do not press the accelerator pedal when the...

Determination of malfunctions of the diesel engine power system and their elimination
Before troubleshooting, the following conditions must be met. Erroneous actions when starting the engine must be excluded. There should be fuel in the tank, the pressure in the fuel system and compression are normal,...

Clutch Fault Identification and Troubleshooting
Clutch jerking Defect of engine and gearbox mounts Check, replace if necessary. Poorly mounted gearbox Tighten the mounting bolts. The pressure plate does not fit evenly Replace pressure plate. The driven disc is not an...

Determination of malfunctions of the brake system and their elimination
Too much brake pedal play Failure of one of the brake circuits Check the brake circuits for brake fluid leakage. Only for drum brakes Sticking of the device for automatic adjustment of the gap between the shoes and the...

Identifying Battery Faults and Troubleshooting
Too low capacity. Voltage drops sharply Battery low Recharge the battery. Charging voltage too low Check voltage regulator, replace if necessary. Connection terminals loose or oxidized Clean the terminals and tighten...

Identifying Generator Faults and Troubleshooting
The battery charging indicator does not light up when the ignition is on Battery low Charge the battery. The wires on the generator are loose or the terminals are rusty Check the wires, clean the terminals and tighten...

List of starter malfunctions and their elimination
The main conditions for testing the starter are reliable electrical contacts without oxidation. The starter does not rotate when the ignition key is turned to the appropriate position Low battery Charge the battery....

Determination of malfunctions of a screen wiper and their elimination
Poor glass quality. Smudges, smearing Dirty rubber band Clean the rubber band with a hard nylon brush and detergent or alcohol. Fringe of the working surface of the rubber band. Tape is torn or worn Replace rubber band....

Incorrect tire wear
More wear on both sides of the tread Tire pressure too low. Heavier wear across the entire mid-tread area Too high tire pressure. Erosion of the side parts of the pattern Static and dynamic imbalance of wheels. There...