Relays have grown in importance in automotive electrical systems. But our switch-in-the-box used to be a rare item. Years ago, many cars had only one relay-a horn relay. It seems that the horn switch was taking quite a beating carrying current for the horn. So some enterprising engineer added a relay to the circuit. When the horn switch was closed, it activated relay. Current then passed through heavy duty contacts in the relay to blow the horn.
This specific HVAC system has no self-diagnostic abilities, but does control the blend doors and A/C while manually controlling the blower motor speed. This article is intended for the learning technicians that have an interest in diagnosing and testing a Hyundai HVAC...
How can an investigation go from bad to worse and solve these issues in a cost effective manner? Back Story 1 The Tucson arrived at the repair facility because the Check Engine light was illuminated, and secondhand information indicated that “The engine tended to run...
This story begins at the local coffee shop. We noticed at the drive-through a modern Alfa Romeo. A chat with a close friend revealed that the vehicle owner was displeased with the local dealer and a contact was created. Displeased with the dealer was a mild term. The...
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