S90 L6-2.9L VIN 96 B6304S (1998)
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Install relay board.
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Install evaporator drain.
Reconnect leads to:
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coolant temperature sensor
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servomotor
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solenoid valves.
Reconnect leads to:
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blower motor
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ambient temperature sensor
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power stage
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control module (if applicable).
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Reconnect positive terminal strip.
In engine compartment:
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Remove plastic cover over right-hand side of windshield wiper well.
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Prise up cover and pull out rubber bellows. Seal around bellows with butyl tape. Reinstall cover.
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Remount climate unit on firewall.