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Service Done Right #14: Troubleshooting Relay Controlled Circuits
Oct. 17, 2022
Related To: Advance Auto Parts
The engine control module operates a number of electrical components in order to carry out its programming. Some of these components draw a lot of current – more than what the internal drivers of the ECM can handle. When that’s the case, the ECM uses an intermediary to turn the component on and off – the relay.
Troubleshooting relay-controlled circuits is the topic of today’s Service Done Right!
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