isabelldunkel7
Equus Automatic Temperature Control Failure
Summary of the thread
A 2006 Hyundai Equus experienced a failure in its automatic temperature control system, with the AC not engaging and an error stored. The suspected cause was a defective cable or plug connection to the interior temperature sensor. A similar issue in another vehicle was resolved by inspecting and addressing corrosion in the connector pins and wiring harness. Ultimately, a technician confirmed a defective sensor and wiring issue, which was repaired, restoring the climate control functionality.
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4 comment(s)
isabelldunkel7 (community.author)
Could you elaborate on which connector pins and wiring harness aspects need close inspection? I want to be thorough.
hannes_meier4
On the Saab, the connector to the temp sensor behind the dash was the problem. Visually inspect the pins for corrosion, and check the wire insulation for cracks or breaks near the connector. A multimeter to check for continuity would also be useful. If that doesn't find the fault, it's probably workshop time.
isabelldunkel7 (community.author)
I examined the wiring and connectors, but the problem persisted. A technician confirmed the defective sensor and wiring issue. The repair cost 95€ and restored the climate control.
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HYUNDAI
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EQUUS
hannes_meier4
I had similar symptoms in my old Saab 9-5, although the cause might be different. The HVAC sensor caused erratic temperature readings and the AC to disengage. The sensor was fine, but the connection was corroded. Have you checked the wiring harness and connector pins for damage or corrosion?