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Home >> Volvo >> 1998 >> S70 Base, Standard >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> A/C-Heater System - Automatic >> Self-Diagnostics >> DTC 441 &/Or DTC 442 >> DTC 441: Program Download To Control Module, Not Carried Out &/Or DTC 442: Program Download To Control Module, Faulty
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DTC 441: Program Download To Control Module, Not Carried Out &/Or DTC 442: Program Download To Control Module, Faulty

Turn ignition on. Check for open circuit in Brown/Orange wire at ECC control module connector terminal C5, and Black wire at ECC control module connector terminal A23. Repair wiring as necessary. If wiring is okay, Use scan tool programming function to read out all data from ECC control module and note values. Program new ECC control module with these values. See PROGRAMMING ECC CONTROL MODULE  .