Contents: Fuel level indicator ↓ Speedometer ↓ Oil Pressure Warning Light Sensor ↓ Parking brake indicator lamp…↓
Coolant temperature gauge. The device operates in conjunction with the sensor installed in the cylinder head. If the sensor resistance is 1000–5000 Ohm, the pointer should be at the beginning of the scale, and if the resistance is 98–110 Ohm, the pointer should be at the beginning of the red section of the scale. The data for checking the gauge sensor are given in Table 29.
Table 29
| Temperature,°C | Voltage supplied to the coolant temperature sensor, V | Sensor resistance. Ohm |
| 30 | 8 | 1350—1880 |
| 50 | 7,6 | 585—820 |
| 70 | 6,85 | 280—390 |
| 90 | 5,8 | 155—196 |
| 110 | 4,7 | 87—109 |
Fuel level indicator
The device works in tandem with a sensor installed in the fuel tank. The same sensor also turns on the fuel reserve indicator light if there are 4-6 liters of gasoline left in the tank. If the sensor resistance is 285-335 Ohm, the arrow should be at the beginning of the scale, if the resistance is 100-135 Ohm, it should be in the middle of the scale, and if the sensor resistance is 7-25 Ohm, it should move to the end of the scale (mark 1). The sensor resistance should be 315-345 Ohm when the tank is empty; with a half-filled tank, 108-128 Ohm, and with a full tank - no more than 7 Ohm.
Speedometer
The device is checked by rotating its drive shaft at different speeds. The speedometer calibration data are as follows: at a drive shaft speed of 500 min⁻¹, the speedometer readings should correspond to 30-32 km/h, at 1000 — 60...63.5, at 1500 — 90...94.5, at 2000 — 120...125.5 and at 2500 min⁻¹ — 150...156.5 km/h.
Oil Pressure Warning Light Sensor
The sensor is installed on the oil filter flange. The sensor contacts should close and open at a pressure of 20-60 kPa.
Parking brake indicator lamp relay-interrupter
The RS-492 relay-breaker is suspended on wires on the left side under the instrument panel and serves to obtain intermittent burning of the parking brake indicator lamp. The number of cycles per minute of switching on and off the relay-breaker at a voltage of 10.8 to 15 V and a temperature of -40... +40°C should be within 60-120. The resistance of the breaker winding is 26 Ohm.