Keypad unit / Carphone module (PHM) (to carphone box)
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2006 Volvo S80, 2005 Volvo S80, 2004 Volvo S80, 2003 Volvo S80, and 2002 Volvo S80. However, it is still accessible from the selected car via links, so may be relevant.
Before measuring, read Connecting the breakout box and checking the ground terminal .
| Control module terminal | Breakout box terminal | Signal type | Ignition on / carphone on | Other |
|---|---|---|---|---|
| B1 | #25 | Microphone signal | Alternating current when there is sound to the handset microphone | - |
| B2 | #26 | Analog ground reference | Ulow | - |
| B3 | #27 | - | - | - |
| B4 | #28 | - | - | - |
| B5 | #29 | Power supply to GSM unit | Ubat | - |
| B6 | #30 | Ground | Ulow | - |
| B7 | #31 | Mbus | Digital signal | - |
| B8 | #32 | Loudspeaker signal | Alternating current when there is sound in handset loudspeaker | - |
| B9 | #33 | Signal (-), handsfree | Alternating current when there is sound in the handsfree loudspeaker | - |
| B10 | #34 | Signal (+), handsfree | Alternating current when there is sound in the handsfree loudspeaker | - |
| B11 | #35 | - | - | - |
| B12 | #36 | - | - | - |
| B13 | #37 | - | - | - |
| B14 | #38 | Power supply to GSM unit | Ubat | - |
| B15 | #39 | Ground | Ulow | - |
| B16 | #40 | Signal ground (Mbus) | Ulow | - |