I143-1 (+B) - I143-20 (E)

Power source (+B)

Power switch off

11 to 14 V

I143-3 (SIG-) - I143-20 (E)

Ground

Always

Below 1 V

I143-4 (IND1) - I143-20 (E)

Manual (SOS) switch red indicator illumination signal

For 2 seconds after power switch turned on (IG)

1 to 8.5 V

Power switch off

Below 1 V

I143-5 (MCVD) - I143-20 (E)

Telephone microphone assembly power supply

Power switch on (IG)

7.5 to 8.5 V

Power switch off

Below 1 V

I143-6 (MCI+) - I143-20 (E)

Receive microphone voice signal

Voice being input to telephone microphone assembly

A waveform synchronized with microphone voice signal is input

I143-7 (MCI-) - I143-20 (E)

Receive microphone voice signal

Always

Below 1 V

I143-13 (GSW) - I143-20 (E)

Collision detection signal

Power switch on (IG)

Pulse generation (Refer to waveform 1)

I143-19 (IG2) - I143-20 (E)

Power source (IG)

Power switch on (IG)

11 to 14 V

Power switch off

Below 1 V

I143-20 (E) - Body ground

Ground

Always

Below 1 Ω

I143-21 (SIG1) - I143-3 (SIG-)

Manual (SOS) switch button condition signal

Manual (SOS) switch not pressed

1.3 to 1.9 V

Manual (SOS) switch pressed

0.5 to 0.8 V

I143-22 (IND2) - I143-20 (E)

Manual (SOS) switch green indicator illumination signal

For 2 seconds after power switch turned on (IG)

1 to 8.5 V

Power switch off

Below 1 V

I143-23 (SGND) - I143-20 (E)

Shield ground

Always

Below 1 Ω

I143-25 (CANP)

CAN communication signal

-

-

I143-26 (CANN)

CAN communication signal

-

-

Tester connection

I143-13 (GSW) - I143-20 (E)

Tool setting

5.0 V/DIV., 20 ms/DIV.

Vehicle condition

Power switch on (IG)