RTI Control Module (To Audio Unit)
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2007 Volvo V70, 2006 Volvo V70, 2005 Volvo V70, 2004 Volvo V70, and 2003 Volvo V70. However, it is still accessible from the selected car via links, so may be relevant.
Before taking any readings, see Connecting the breakout box and checking the ground terminal .
The RTI control module terminals E1-E8 correspond to terminal #16-#23 on the breakout box.
| Control module terminal | Breakout box terminal | Signal Type | Ignition On | Other |
|---|---|---|---|---|
| E1 | #16 | Clock signal to audio unit | Digital signal | Melbus protocol |
| E2 | #17 | Signal ground, sound | Ulow | - |
| E3 | #18 | 15 supply | Ubat | - |
| E4 | #19 | Data signal to audio unit | Digital signal | Melbus protocol |
| E5 | #20 | Busy signal to audio unit | Digital signal | Melbus protocol |
| E6 | #21 | Left audio channel | Alternating current on sound to loudspeakers | 150 mV rms +/- 38 mV (1 kHz 30% mod) |
| E7 | #22 | Right audio channel | Alternating current on sound to loudspeakers | 150 mV rms +/- 38 mV (1 kHz 30% mod) |
| E8 | #23 | Voice guide channel | Alternating current on sound to loudspeakers (for voice guidance) | 150 mV rms +/- 38 mV (1 kHz 30% mod) |
| H | Screen ground, cable to audio unit | Ulow | - | - |