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Home >> Volvo >> 2008 >> C30 T-5 R-Design, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 8 (Central Electronic Module, Gas Discharge Lamp Module, Start Control Module And Accessory USB Unit - Electrical Specifications) >> Signal Specification, Accessory USB Unit (AUU) (2008-2013) >> Signal Description
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Signal Description

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2013 Volvo C70, 2012 Volvo C70, 2011 Volvo C70, 2010 Volvo C70, and 2009 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.

General 

U= DC voltage in volts (V) UAC = AC voltage in volts (V)
Ubat = Battery voltage (V) f = Frequency in Hertz (Hz)
Ulow = Voltage approximately 0 V t = Time in seconds
PWM = Pulse width modulated signal as a %    
Fig 1: Identifying Connector C1
GLL157885Courtesy of VOLVO CARS CORPORATION
CONNECTOR C1

Breakout box terminal  Control module terminal  Signal type  Ignition on  Other 
- #C1-1 Power supply U = Ubat  
- #C1-2 Ground, power supply U = Ulow  
- #C1-3 Reserve -  
- #C1-4 Reserve -  
Fig 2: Identifying Connector C2
GLL157886Courtesy of VOLVO CARS CORPORATION
CONNECTOR C2

Breakout box terminal  Control module terminal  Signal type  Ignition on  Other 
- #C2-1 MOST input signal Optical input signal when the MOST network is activated  
- #C2-2 MOST output signal Optical output signal when the MOST network is activated