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CD-ROM changer (to RTI control module and "chassis")

Fig 1: 10-CD Changer Connector Terminals
GLL104029Courtesy of VOLVO CARS OF NORTH AMERICA.

Before taking any readings, see Connecting the breakout box and checking the ground terminal .

CD-ROM changer terminals K1-K5 correspond to #26-#30 on the breakout box.

Control module terminal  Breakout box terminal Signal type  Ignition on  Signal specification 
K1 #26 Ground (Measured to battery negative terminal) Ulow -
K2 #27 30-supply (power supply from battery) Ubat -
K3 #28 Signal (+) with map information from the CD-ROM changer Digital signal VH =0.68 +/- 0.2 V,
VL =0.5 +/- 0.1 V
K4 #29 Screen ground, signal cables to CD-ROM changer Ulow -
K5 #30 Signal (-) with map information from the CD-ROM changer Digital signal VH =0.68 +/- 0.2 V,
VL =0.5 +/- 0.1 V
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