(1) Breakdown phenomenon The FAW-Volkswagen Sagitar sedan has a mileage of 51,000 km.
It is difficult to start the engine when it is cold and the charge light always flashes after the engine is running. ?
(2) Cause of failure: The voltage regulator is damaged.
(3) Fault Diagnosis and Troubleshooting The charge light (warning light) flashes after the engine is started, indicating that the alternator is not charging the battery (the alternator can also charge the battery when the Santana car starts and idles); Difficulty starting the car when it is cold indicates that the battery is discharged.
There are generally two reasons to analyze the failure.① The generator is not working properly, causing the generator to generate too little power and insufficient voltage.
②The voltage regulator is damaged and the electricity generated by the generatorur cannot charge the battery.Connect a test light in parallel between the "B+" terminal of the armature and the magnetic field terminal "F" of the generator (remove the wire from the magnetic field terminal "F" of the generator) , and run the engine at medium speed. speed. When the 12V battery is connected and the test light does not light up, it indicates that the voltage regulator is damaged.
Replace the integrated voltage regulator assembly (if this part is not available, replace the generator assembly) and troubleshoot. Voltage regulators are generally not easily damaged, but they can be damaged by prolonged high voltage surges.
This will cause the battery to lose power and become progressively damaged. ?