The alternator produces an AC current that must be converted into DC current by way of a rectifier.
Don’t automatically assume an illuminated charge light problem is inside the alternator and potentially unserviceable. The problem could be the pulley and belt drive system. Neglecting to test and diagnose the pulley can lead to unnecessary replacement.
Excessive ripple voltage can cause communication issues with networks and communication DTCs in multiple modules. Here’s what you need to know.
All too often, the alternator is condemned by technicians due to a battery voltage test alone. However, there are many circumstances to consider before dooming the part to the recycling bin.
The system allows operators to run road load cycles to simulate real-world conditions, including starting the engine, dynamic braking, power assist and battery charging modes.
The dynamometer can run in motoring or loading modes at maximum rated torque/power in either direction at any time, and can switch between these modes instantaneously.
One test is not enough if you are diagnosing a charging system problem. All too often, the alternator is condemned as the source of the problem if only battery voltage is present with the engine running. If this is the case, it means that the alternator is not charging, but does not reveal why.