Connector C
| Breakout box terminal | Control module terminal | Signal type | Ignition on | Ignition off | Other |
| #C-1 | Output, optical | | | |
| #C-2 | Input, optical | | | |
Connector C2
| Breakout box terminal | Control module terminal | Signal type | Ignition on | Miscellaneous |
| #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 | |
All the values given below are between the terminals stated in column 1 and terminal #1 in column 2 (signal ground). This applies unless otherwise indicated in brackets.
Note. It is important to connect the breakout box and check the ground terminals before taking readings.
| U= | DC voltage in volts (V) | U AC = | AC voltage in volts (V) |
| U bat = | Battery voltage (V) | F = | Frequency in Hertz (Hz) |
| U low = | Voltage approximately 0 V | T = | Time in seconds |
| PWM = | Pulse width modulated signal as a % | | |
Scheme 263
| Control module terminal | Signal type | Ignition on | Idle | Other |
| #1 | Ground | U low | | |
| #2 | 30 supply In the XC90, the handsfree box is powered via the infotainment relay. | U bat | | |
| #3 | | | | |
| #4 | Loudspeaker signal (+) | Alternating current when there is sound in the loudspeaker | | |
| #5 | 15 supply | U= 12 V | | |
| #6 | Radio mute signal | During a call U=U low U= 12 V otherwise | | |
| #7 | Loudspeaker signal (-) | Alternating current when there is sound in the loudspeaker | | |
| #8 | | | | |
Scheme 264
| Control module terminal | Signal type | Ignition on | Idle | Other |
| #1 | Handsfree antenna | Handsfree antenna signal | | |
| #2 | Antenna ground | U low | | |
Scheme 265
| Control module terminal | Signal type | Ignition on | Idle | Other |
| #1 | Microphone | Alternating current when there is sound in the microphone | | |
| #2 | Signal ground, microphone | U low | | |
Note. It is important to connect the breakout box and check ground terminals before taking readings.
There may be several connections and connectors between the control module and components.
For further information about
- connecting the breakout box, see "Connecting the breakout box, phone module (PHM)".
- checking the ground terminal, see "Checking the ground terminal, Phone module (PHM)".
| U= | DC voltage in volts (V) | U AC = | AC voltage in volts (V) |
| U bat = | Battery voltage (V) | F = | Frequency in Hertz (Hz) |
| U low = | Voltage approximately 0 V | T = | Time in seconds |
| PWM = | Pulse width modulated signal as a % | | |
CONNECTOR A, PHONE MODULE (PHM)
| Control module terminal | Breakout box terminal | Signal type | Ignition on | Other |
| A1 | #1 | Power ground | U low | |
| A2 | #2 | +30 supply | U bat | |
| A3 | #3 | | | |
| A4 | #4 | CAN (L) | Digital signal | |
| A5 | #5 | | | |
| A6 | #6 | | | |
| A7 | #7 | Power supply, SIM card | U= 2.8 V | |
| A8 | #8 | Signal ground, SIM card | Ulow | |
| A9 | #9 | Clock signal to the SIM card | Quadratic signal | |
| A10 | #10 | | | |
| A11 | #11 | | | |
| A12 | #12 | | | |
| A13 | #13 | | | |
| A14 | #14 | CAN (H) | Digital signal | |
| A15 | #15 | | | |
| A16 | #16 | | | |
| A17 | #17 | | | |
| A18 | #18 | | | |
| A19 | #19 | Control signal, SIM card | Pulsed signal | |
| A20 | #20 | Diagnostic lead, SIM card | | |
| A21 | #21 | Communication cable, SIM card | Pulsed signal | |
| A22 | #22 | | | |
Scheme 266
Scheme 266: CONNECTOR B, PHONE MODULE (PHM)
| Control module terminal | Breakout box terminal | Signal type | Ignition on | Other |
| B1 | #43 | | | |
| B2 | #44 | | | |
| B3 | #45 | | | |
| B4 | #46 | | | |
| B5 | #47 | | | |
| B6 | #48 | Handset, ground | U low | |
| B7 | #49 | | | |
| B8 | #50 | | | |
| B9 | #51 | | | |
| B10 | #52 | | | |
| B11 | #53 | Handset, power supply | U= 12 V when the handset is in use, otherwise U= 0 V | |
| B12 | #54 | Handset, cradle signal | U= 2.9-3.7 V when the handset is in use, otherwise U= 1.6-2.1 V | |
| B13 | #55 | Handset, microphone | Alternating current when there is sound from the microphone | Difficult to measure |
| B14 | #56 | Handset, speaker | Alternating current when there is sound to the loudspeaker | Difficult to measure |
Scheme 267
Scheme 267: CONNECTOR C, PHONE MODULE (PHM)
| Control module terminal | Breakout box terminal | Signal type | Ignition on | Other |
| A | | Antenna | Antenna signal carphone | |
| B | | GND (shield) | Shield ground antenna signal | |
CONNECTOR D, PHONE MODULE (PHM)
| Terminal | Breakout box terminal | Signal type | Ignition on | Other |
| #D1 | | MOST input signal | Optical input signal when the MOST network is activated | |
| #D2 | | MOST output signal | Optical output signal when the MOST network is activated | |