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Home >> Volvo >> 2009 >> S40 T-5, AWD >> Repair and Diagnosis >> Electrical >> Body Electrical >> Accessory Electronic Module (AEM), Accessory USB Unit (AUU) And Central Electronic Module (CEM) - Specifications, Other (544 Body) >> Vehicle Communication Information, Accessory Electronic Module (AEM) (2004-2011) >> Description Of Activations >> Relay Engine Block Heater

Relay Engine Block Heater

Control module terminal #5 for the engine block heater relay can be activated. In the normal position (the output not activated by the central electronic module (CEM)), the voltage is approximately 0 V. On activation, the voltage is approximately equivalent to battery voltage and the relay for the engine block heater is activated. If the heater or other accessory is connected, it should start.

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