Removing
1. Disconnect the hose from the regulator (see photo in Chap. 4, section 9).
2. Disconnect the connector.
3. Turn away bolts and remove a regulator from soaking up a collector.
Examination
4. You can independently determine the presence of voltage on the regulator, the resistance of the regulator, as well as the closing of the shutter when the regulator is heated. If the damper does not close in the presence of voltage and normal resistance, then hand over the regulator to a car service for diagnostics.
5. Note the position of the regulator shutter. At a temperature of 14-19°C, the shutter should cover approximately half of the channel. As the temperature drops, the shutter opens more.
6. Feed to the regulator with auxiliary wires (solder a fuse in one of them) battery voltage.
7. When the regulator is heated by current from the battery, the shutter should close the channel (in about 5 min). In this case, the regulator is in good condition, perform the operations starting from point 10.
8. If the shutter closes too long, then check the resistance of the regulator.
9. If resistance differs from norm replace a regulator.
10. Check the voltage at the regulator by connecting a voltmeter between terminals a and b of the connector (photo). The voltage should be about 12 V and after 5 seconds it will drop to 0. Otherwise, the regulator wiring is faulty.
7.10 Checking the voltage at the regulator
11. The regulator may not work if there is no connection to ground through the processor unit, despite the presence of voltage at the output "A". Check the integrity of the wire from the regulator to the processor unit.
Installation
12. Installation is carried out in the reverse order. Replace O-ring.