7.8. Control devices

Possible malfunctions of control devices and ways of their elimination
REPAIR



All control devices of the car are united in a combination of devices. On cars UAZ-3160,-31601 and-31605,-31604 combinations of devices 152.3801, 157.3801, 158.3801 respectively are applied.
The combination of devices includes a speedometer, a tachometer, the index of pressure of oil, the index of temperature of cooling liquid, the index of level of fuel with a control lamp of a reserve, the index of tension and 7 control lamps.
Electric connections of a combination of devices are executed by printed circuit wiring on the payment fixed on the back party of a combination.

Fig. 299. Basic electric circuit of a combination of devices: 1 – index of level of fuel; 2 – speedometer; 3 – tachometer; 4 – index of pressure of oil; 5 – index of temperature of cooling liquid; 6 – index of tension; E1-E4 – illumination lamps; H1 – a control lamp of the reserve rest of fuel; H2 – a control lamp of inclusion of driving beam of headlights; H3 – a control lamp of inclusion of signals of turn; H4 – a control lamp of a discharge of the rechargeable battery; H5 – a control lamp of emergency pressure drop of oil (UAZ-3160,-31601 and-31605), a control lamp of availability of water in fuel (UAZ-31604); H6 – a control lamp of emergency temperature; H7 – a control lamp of turning on of the parking brake system and malfunction of the brake system; H8 – a control lamp of malfunction of a microprocessor control system of the engine (UAZ-3160 and UAZ-31605), a control lamp of control of the device for launch of the cold engine (UAZ-31601), a control lamp of inclusion of prestarting heating of the engine (UAZ-31604).
Note. The control lamp of emergency pressure drop of oil (UAZ-31604) is in a scale of the index of pressure of oil.


The scheme of connections of a combination of devices is given in fig. 299, addresses of contacts of X1-X3 sockets in tab. 28, 29, 30.