Normal Start (Start With Key) Of Engine

Courtesy of VOLVO CARS CORPORATION

• Secondary battery relay (2) is not activated and is in normal position (open).
• The secondary battery (1) is not connected.
• The battery relay (main battery) (4) is not activated and is in normal position (closed).
• The vehicle is powered from the battery (main battery) (6).
• The starter motor relays (5) are activated (contacts closed) by the Engine control module (ECM). The starter motor's solenoid switches on and the starter motor starts.
• The battery diode (3) does not fulfil any function in this mode.