1. Remember that the charge of violation of the system is not necessarily linked to the failure of the generator. First of all, always perform the following simple checks:
a) Check the condition of the battery cables in places where they connect them to the pole terminals of the latter. Check for loose terminal clamps; b) Check the condition of the battery (see. Section Checking and replacing the battery). If necessary, make a last recharging, or replace it with a new; c) Check the condition of wiring and electrical connections of the generator and the voltage regulator; d) Check the condition and the tension of the drive belt of the generator (see chap. Adjustment and routine maintenance). In case of need make replacement; e) Check the tightness of the mounting bolts of the generator; f) Start the engine and evaluate the intensity of the background noise emitted by the generator; g) If the appropriate equipment, check the fuse links in the assembly block in the engine compartment of the car (see chap. Onboard electric equipment) .If any of the inserts out of order, make an investigation and elimination of the causes of congestion; h) Check the operation of the charge control lamp in the dashboard of the motor. With the ignition on and the engine stopped, the lamp should burn. Otherwise, check the condition of the chain on a site between the generator and the indicator lamp; i) Check the condition of all fuses, series-connected in the circuit of the charge. Location of fuses and fuse links can vary depending on the year and model of equipment, however, remain the same designation. See. Wiring diagrams at the end of the Head the Onboard electric equipment. 2. Use a voltmeter to measure the battery voltage outputted nazadney side of the generator when the engine is stopped and disabled consumers of electricity (the heater fan, radio, cigarette lighter, cooling fan, etc., etc.). The result of the measurement should be about 12 or a little higher if the engine has been running for the last hour. | 3. Start the engine and recheck the output voltage of the battery. At this time, the reading should be about 15 (but not above). |
4. Turn on the headlights - voltage should fall slightly, but not below that recorded during the measurement described in paragraph 2. 5. If the charging voltage exceeds 15 V, therefore, there is a failure of the voltage regulator and generator should be replaced (see. Section Removal and installation of the generator). 6. If too low charging voltage (less than 12V), check up serviceability of functioning of the generator (see. Below). | 7. Using a voltmeter prozondiruyte terminal "B" connector on the rear side of the generator. Required reading is 12 V when the ignition is off. |
8. Turn on the ignition (the engine do not start) and alternately prozondiruyte each of the terminals. On the terminal "S" should be a voltage of 12 V on terminal "L" - (1.5 ÷ 2.0) In, at the terminal "B" - 12 V. 9. Start the engine, lift it up to 2000 revolutions per minute and repeat the test. This time must take place the following picture: "S" and "B" - (14.0 ÷ 14.7) in, "L" - (13.0 ÷ 14.0) V. | Keep measuring electricity, hair and items of clothing does not come into contact with moving parts in the engine compartment of the car! |
10. When negative results described above checks reassess the appropriate electrical circuit. If there are defects in harness, replace the generator. 11. If there are suspicions on the development of leakage currents, leading to the discharge of the battery, refer to the materials section Checking and replacing the battery. 12. In identifying signs, confirming the presence of leakage current start carefully removing the fuses one by one the main board power consumers such as radio, heater fan, light luggage, etc. Continue removing the fuses as long as the lamp goes out, probe, and then check the condition of the circuit corresponding to the consumer and make necessary regenerative repair. Repeat the inspection of the system charge. 13. If removing the fuse does not give any results, disconnect the output wire and other electrical wiring on the rear wall of the generator - off lamp probe will indicate failure of the alternator or voltage regulator - replace the assembly. |