TELEMATICS TRANSCEIVER
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| L127-1 (+B) - L127-10 (E) | R - W-B | Power source | Always | 11 to 14 V |
| L127-2 (SPI+) - L127-10 (E) | L - W-B | Sound signal | Audio system playing | A waveform synchronized with sound is output. |
| L127-3 (SPI-) - L127-10 (E) | LG - W-B | Sound signal | Audio system playing | A waveform synchronized with sound is output. |
| L127-5 (MCI-) - L127-10 (E) | R - W-B | Microphone voice signal | See "Microphone & Voice Recognition Check" Click here |
- |
| L127-6 (MCI+) - L127-10 (E) | W - W-B | Microphone voice signal | See "Microphone & Voice Recognition Check" Click here |
- |
| L127-7 (MCO+) - L127-10 (E) | Y - W-B | Microphone voice signal | See "Microphone & Voice Recognition Check" Click here |
- |
| L127-8 (MCO-) - L127-10 (E) | BR - W-B | Microphone voice signal | See "Microphone & Voice Recognition Check" Click here |
- |
| L127-9 (MUTE) - L127-10 (E) | SB - W-B | MUTE signal | Audio system playing | 3.5 V or higher |
| Emergency call mode | Below 1 V | |||
| L127-10 (E) - Body ground | W-B - Body ground | Ground | Always | Below 1 V |
| L127-11 (SPO+) - L127-10 (E) | V - W-B | Sound signal | Emergency call mode | A waveform synchronized with the received voice is output. |
| L127-12 (SPO-) - L127-10 (E) | P - W-B | Sound signal | Emergency call mode | A waveform synchronized with the received voice is output. |
| L127-13 (ACC) - L127-10 (E) | LG - W-B | Power source (ACC) | Power switch on (ACC) | 11 to 14 V |
| Power switch off | Below 1 V | |||
| L127-14 (IG2) - L127-10 (E) | R - W-B | Power source (IG) | Power switch on (IG) | 11 to 14 V |
| Power switch off | Below 1 V | |||
| L127-16 (IND2) - L127-10 (E) | L - W-B | Emergency call switch green indicator illumination signal | For 5 seconds after turning the Power switch on (ACC) | 1 to 8.5 V |
| Power switch off | Below 1 V | |||
| L127-17 (IND1) - L127-10 (E) | LG - W-B | Emergency call switch red indicator illumination signal | For 5 seconds after turning the Power switch on (ACC) | 1 to 8.5 V |
| Always | Below 1 V | |||
| Power switch off | Below 1 V | |||
| L127-18 (SIG1) - L127-19 (SIG-) | P - G | Emergency call switch button condition signal | Emergency call switch button not pressed | 1.7 V |
| Emergency call switch button pressed | 1 V | |||
| L127-19 (SIG-) - L127-10 (E) | G - W-B | Ground | Always | Below 1 V |
| L127-20 (MCVD) - L127-10 (E) | B - W-B | Telephone microphone assembly power supply | Power switch on (ACC) | 4 to 6 V |
| Power switch off | Below 1 V | |||
| L127-21 (SGND) - L127-10 (E) | Shield - W-B | Shield ground | Always | Below 1 V |
| L127-22 (GSW) - L127-10 (E) | L - W-B | Airbag deployment signal | Power switch on (IG) | Pulse generation (Refer to waveform 1) |
| L153-1-1 (USB-) | B | USB communication line | - | - |
| L153-1-2 (USB+) | B | USB communication line | - | - |
| L153-1-3 (USBS) - Body ground | B - Body ground | Shield ground | Always | Below 1 V |
| L153-2 (USBG) - Body ground | W - Body ground | Shield ground | Always | Below 1 V |
| L153-3 (VOT+) - L127-10 (E) | B - W-B | Receive voice signal | Receiving a call while using the operator service | A waveform synchronized with the received voice is output. |
| L153-4 (USBV) - L127-10 (E) | W - W-B | Telematics transceiver power supply | Power switch on (ACC) | 4.75 to 5.25 V |
| Power switch off | Below 1 V | |||
| L153-5 (VOT-) - L127-10 (E) | B - W-B | Receive voice signal | Receiving a call while using the operator service | A waveform synchronized with the received voice is output. |
| L153-6 (VOR-) - L127-10 (E) | B - W-B | Sent voice signal | Calling while using the operator service | A waveform synchronized with the sent voice is output. |
| L153-7 (VOR+) - L127-10 (E) | G - W-B | Sent voice signal | Calling while using the operator service | A waveform synchronized with the sent voice is output. |
Reference (Oscilloscope waveform):
Waveform 1
| Item | Condition |
|---|---|
| Tester connection | L127-22 (GSW) - L127-10 (E) |
| Tool setting | 5.0 V/DIV., 20 ms/DIV. |
| Vehicle condition | Power switch on (IG) |
MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here