Signal Description, Integrated Audio Module (IAM) (2012): General
All values below are measured between the relevant terminal in column 1 and C2-8 in column 2 (power ground) unless otherwise stated in parenthesis after the table entry.
NOTE:
It is important to connect the breakout box and check the ground connections before starting to measure.
| 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 % |
CONNECTOR C1
| Breakout box terminal | Control module terminal | Signal type | Ignition on | Miscellaneous |
| #21 | #1 | Speaker right front door (+) | Analog output signal when the speaker is in use | |
| #22 | #2 | - | - | |
| #23 | #3 | Speaker left rear door (+) | Analog output signal when the speaker is in use | |
| #24 | #4 | Speaker right rear door (+) | Analog output signal when the speaker is in use | |
| #25 | #5 | - | - | |
| #26 | #6 | Speaker left front door (+) | Analog output signal when the speaker is in use | |
| #27 | #7 | Speaker right front door (-) | Analog output signal when the speaker is in use | |
| #28 | #8 | - | - | |
| #29 | #9 | Speaker left rear door (-) | Analog output signal when the speaker is in use | |
| #30 | #10 | Speaker right rear door (-) | Analog output signal when the speaker is in use | |
| #31 | #11 | - | - | |
| #32 | #12 | Speaker left front door (-) | Analog output signal when the speaker is in use |
CONNECTOR C2
| Breakout box terminal | Control module terminal | Signal type | Ignition on | Miscellaneous |
| #1 | #1 | Control module power supply | U=Ubat | |
| #2 | #2 | Power supply, antenna amplifier | U=11±0.5 V | Output |
| #3 | #3 | Microphone 1 (+) | Analog input signal | |
| #4 | #4 | Microphone 1, ground | U=Ulow |
|
| #5 | #5 | Extra input (AUX input), left channel | Analog input signal | |
| #6 | #6 | Extra input (AUX 1-input), right channel | Analog input signal | |
| #7 | #7 | Extra input (AUX 1-input), ground | U=Ulow | |
| #8 | #8 | Ground | U=Ulow | |
| #9 | #9 | Microphone 1, ground | U=Ulow | |
| #10 | #10 | Microphone 2 (+) | Analog input signal | |
| #11 | #11 | Extra input (AUX 2-input), right channel (-) | Analog input signal | |
| #12 | #12 | Extra input (AUX 2-input), right channel (+) | Analog input signal | |
| #13 | #13 | Extra input (AUX 2-input), left channel (-) | Analog input signal | |
| #14 | #14 | Extra input (AUX 2-input), left channel (+) | Analog input signal |
CONNECTOR C3
| Control module terminal | Signal type | Miscellaneous |
| #1 | Antenna signal | Input signal AM/FM |
| #2 | Antenna signal | Input signal FM/TMC |
CONNECTOR C4
| Breakout box terminal | Control module terminal | Signal type | Ignition on | Miscellaneous |
| - | #1 | MOST input signal | Optical signal when the MOST network is activated | |
| - | #2 | MOST output signal | Optical signal when the MOST network is activated |