Tech Tips
Check from the rear of the connector while it is connected to the components.
TELEMATICS TRANSCEIVER
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| L191-1 (+W-B) - L191-4 (E) | R - W-B | Power source (+B) | Power switch off | 11 to 14 V |
| L191-2 (SPI+) - L191-4 (E) | L - W-B | Sound signal | Audio system playing | A waveform synchronized with sound is output |
| L191-3 (SPI-) - L191-4 (E) | LG - W-B | Sound signal | Audio system playing | A waveform synchronized with sound is output |
| L191-4 (E) - Body ground | W-B - Body ground | Ground | Always | Below 1 V |
| L191-5 (SPO+) - L191-4 (E) | V - W-B | Sound signal | Emergency call mode | A waveform synchronized with the received voice is output |
| L191-6 (SPO-) - L191-4 (E) | P - W-B | Sound signal | Emergency call mode | A waveform synchronized with the received voice is output |
| L191-7 (IG2) - L191-4 (E) | R - W-B | Power source (IG) | Power switch on (IG) | 11 to 14 V |
| Power switch off | Below 1 V | |||
| L191-8 (ACC) - L191-4 (E) | LG - W-B | Power source (ACC) | Power switch on (ACC) | 11 to 14 V |
| Power switch off | Below 1 V | |||
| L191-11 (IND1) - L191-4 (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 |
| Power switch off | Below 1 V | |||
| L191-12 (IND2) - L191-4 (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 | |||
| L191-15 (CANP) | R | CAN communication signal | - | - |
| L191-16 (CANN) | G | CAN communication signal | - | - |
| L191-17 (MUTE) - L191-4 (E) | SB - W-B | Mute Signal | Audio system playing | Above 3.5 V |
| Emergency call mode | Below 1 V | |||
| L191-18 (MCO+) - L191-4 (E) | Y - W-B | Microphone voice signal | Refer to "Microphone Check" Click here |
- |
| L191-19 (MCO-) - L191-4 (E) | BR - W-B | Microphone voice signal | Refer to "Microphone Check" Click here |
- |
| L191-24 (GSW) - L191-4 (E) | L - W-B | Airbag deployment signal | Power switch on (IG) | Pulse generation (Refer to waveform 1) |
| L191-26 (SIG-) - L191-4 (E) | G - W-B | Ground | Always | Below 1 V |
| L191-27 (SIG1) - L191-26 (SIG-) | P - G | Emergency call switch button condition signal | Emergency call switch not pressed | 1.3 to 1.9 V |
| Emergency call switch pressed | 0.5 to 0.8 V | |||
| L191-32 (SGND) - L191-4 (E) | Shield - W-B | Shield ground | Always | Below 1 V |
| L191-33 (MCVD) - L191-4 (E) | B - W-B | Telephone microphone assembly power supply | Power switch on (ACC) | 4 to 6 V |
| Power switch off | Below 1 V | |||
| L191-34 (MCI+) - L191-4 (E) | W - W-B | Microphone voice signal | Refer to "Microphone Check" Click here |
- |
| L191-35 (MCI-) - L191-4 (E) | R - W-B | Microphone voice signal | Refer to "Microphone Check" Click here |
- |
| L195-1-1 (USB-) | - | USB communication line | - | - |
| L195-1-2 (USB+) | - | USB communication line | - | - |
| L195-1-3 (USBS) - Body ground | Shield - Body ground | Shield ground | Always | Below 1 V |
| L195-2 (USBG) - Body ground | W - Body ground | Shield ground | Always | Below 1 V |
| L195-3 (VOT+) - L191-4 (E) | W - W-B | Receive voice signal | Receiving a call while using the operator service | A waveform synchronized with the received voice is output |
| L195-4 (USBV) - L191-4 (E) | W - W-B | Telephone microphone assembly power supply | Power switch on (ACC) | 4.75 to 5.25 V |
| Power switch off | Below 1 V | |||
| L195-5 (VOT-) - L191-4 (E) | R - W-B | Receive voice signal | Receiving a call while using the operator service | A waveform synchronized with the received voice is output |
| L195-6 (VOR-) - L191-4 (E) | B - W-B | Sent voice signal | Calling while using the operator service | A waveform synchronized with the sent voice is output |
| L195-7 (VOR+) - L191-4 (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 | L191-24 (GSW) - L191-4 (E) |
| Tool setting | 5.0 V/DIV., 20 ms/DIV. |
| Vehicle condition | Power switch on (IG) |
MULTI-MEDIA MODULE RECEIVER ASSEMBLY Click here