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Home >> Volvo >> 2009 >> C30 R-Design, Automatic >> Repair and Diagnosis (Single Page) >> Electrical >> Body Electrical >> Central Electronic Module (CEM), Accessory Electronic Module (AEM), And Accessory USB Unit (AUU) - Specifications, Other >> Vehicle Communication Information, Accessory Electronic Module (AEM) >> Description Of Activations >> Relay Engine Block Heater
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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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