Charge system units on cars after 1993
1. Main fuse link FL 2.0L; 2. Fuse IGN 7.5 A; 3. Charge fuse 7.5 A; 4. Fuse AM1 (50 A); 5. Fuse AM1 FL 1.25 V; 6. Generator; 7. Fuse AM2 0.3P
Circuit for checking battery charge current
1. Disconnect the wire from pin B; 2. Ammeter; 3. Generator; 4. Voltmeter; 5. Battery
Examination
1. In the event of a fault in the battery charging circuit, a conclusion about the failure of the generator should be made only after the following checks.
2. Check the condition and tension of the alternator belt. If signs of wear are found, replace the belt.
3. Check alternator bolts for tightness.
4. Check the wiring of the generator and the voltage regulator, the reliability of fastening and the condition of the connectors.
5. Check fuses and fuses. If a burnout is detected, find out the cause and eliminate it.
6. Start the engine and check the sound of the generator (a howling or screeching sound indicates worn bearings).
7. Check the density of the electrolyte in the battery. If the density is low, charge the battery (This item does not apply to maintenance-free batteries).
8. Check if the battery is fully charged (if the battery section is faulty, it can be recharged).
9. Disconnect the cables from the battery and clean.
10. Check the operation of the indicator lamp relay (on cars from 1980 to 1992. relay location varies, see fig. Installation of the FJ60 electrical equipment relay, pic. Installation of the relay of electrical equipment of cars FJ80).
11. Check battery voltage with engine off. The voltage should be around 12V.
12. Start the engine and check the voltage again, which should now be between 13.5 and 15.1 volts.
13. Turn on high beam headlights. During normal operation of the charge system, the voltage should drop and rise again.
14. If the voltage is higher than normal, replace the voltage regulator (see subsection 3.4.11).
15. If the voltage is below normal, then check the regulator and alternator by doing the following.
16. Connect terminal F to ground (1) on the back cover, start the engine, read the battery voltage and compare with the standard.
17. If the voltage is higher than standard, replace the voltage regulator.
18. If the voltage is below standard, then check the generator (or in the absence of an ammeter, take it to a car service workshop).
19. If there is an ammeter, then include it in the charging circuit (see fig. Circuit for checking battery charge current). In the absence of an ammeter, you can use a current transformer.
20. Bring the engine speed up to 2000 rpm, measure the current with the consumers turned off. Then turn on the high beam headlights and the heater fan (set switch to HI). Measure the current and compare with the values given in subsection 3.4.1.
21. If the measured current is less than the standard, then repair or replace the generator.