Where is the preheating relay of Qingling Isuzu pickup truck located?

1 Answers
SanValeria
07/30/25 4:55am
On the right side of the engine compartment, next to the fuse box, a black square-shaped component is the preheating relay. Function of the preheating relay: The preheating relay is an electromagnetic relay used for the preheater. When the temperature sensor of the construction machinery detects that the temperature is too low, the computer controlling the construction machinery will send a voltage to the relay, thereby connecting the power supply to the preheater. When the temperature rises, the relay disconnects the power supply. Introduction to relays: A relay, also known as an electrical relay, is an electronic control device that consists of a control system (also called the input circuit) and a controlled system (also called the output circuit). It is commonly used in automatic control circuits.
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