Lexus NX: Terminals Of Ecu

I151-1 (GND1) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

I151-2 (GND2) - Body ground

B - Body ground

Ground

Always

Below 1 Ω

I151-3 (+B) - I151-1 (GND1)

R - W-B

Power source (+B)

Power switch off

11 to 14 V

I151-4 (+B1) - I151-1 (GND1)

B - W-B

Power source (+B)

Power switch off

11 to 14 V

I151-5 (TX1+)

B

AVC-LAN communication signal

-

-

I151-6 (TX1-)

P

AVC-LAN communication signal

-

-

I151-10 (AGND) - I151-1 (GND1)

Shielded - W-B

Shield ground

Always

Below 1 Ω

I151-11 (VAL+) - I151-13 (VA-)

B - R

Sound signal (Left)

External device system playing (when No. 1 stereo jack adapter assembly used)

A waveform synchronized with sound signals is output

I151-12 (VAR+) - I151-13 (VA-)

W - R

Sound signal (Right)

External device system playing (when No. 1 stereo jack adapter assembly used)

A waveform synchronized with sound signals is output

I151-13 (VA-) - I151-1 (GND1)

R - W-B

Sound signal ground

Always

Below 1 Ω

I151-14 (ADPG) - I151-13 (VA-)

L - R

External device connection detection signal

External device connected

1.3 to 1.8 V

External device not connected

2.2 to 3.3 V

I151-15 (ACC1) - I151-1 (GND1)

GR - W-B

Power source (ACC)

Power switch on (ACC)

11 to 14 V

Power switch off

Below 1 V

I151-16 (ACC) - I151-1 (GND1)

Y - W-B

Power source (ACC)

Power switch on (ACC)

11 to 14 V

Power switch off

Below 1 V

I151-17 (TX2+)

R

AVC-LAN communication signal

-

-

I151-18 (TX2-)

L

AVC-LAN communication signal

-

-

I151-21 (SW1) - I151-24 (SWG)

P - BR

Steering pad switch signal

No switch pushed

2.97 to 3.56 V

Seek+ switch pushed

0.27 to 0.35 V

Seek- switch pushed

0.86 to 1.03 V

Vol+ switch pushed

1.51 to 1.79 V

Vol- switch pushed

2.22 to 2.66 V

I151-22 (SW2) - I151-24 (SWG)

R - BR

Steering pad switch signal

No switch pushed

2.97 to 3.56 V

MODE switch pushed

0.27 to 0.35 V

On hook switch pushed

0.86 to 1.03 V

Off hook switch pushed

1.51 to 1.79 V

Voice switch pushed

2.22 to 2.66 V

I151-24 (SWG) - Body ground

BR - Body ground

Steering pad switch signal

Always

Below 1 Ω

I151-25 (MUT1) - Body ground

P - Body ground

Mute signal

Audio system playing

2.0 V or higher

Audio system changing modes

Below 1 V

I151-27 (SPD) - I151-1 (GND1)

W - W-B

Vehicle speed signal

See "Vehicle Signal Check Mode" in Operation Check

-

I153-10 (USBV) - I151-1 (GND1)*1

G - W-B

DCM (telematics transceiver) power supply

Power switch off

Below 1 V

Power switch on (ACC)

4.75 to 5.25 V

I153-11 (USBG) - Body ground*1

P - Body ground

Ground

Always

Below 1 Ω

I153-12 (SGND) - Body ground*1

Shielded - Body ground

Shield ground

Always

Below 1 Ω

I153-13 (VOR+) - I151-1 (GND1)*1

R - W-B

Receive voice signal

Destination assist service in use and operator speaking to vehicle occupant

A waveform synchronized with the received voice is output.

I153-14 (VOR-) - I151-1 (GND1)*1

G - W-B

Receive voice signal

Destination assist service in use and operator speaking to vehicle occupant

A waveform synchronized with the received voice is output.

I153-15 (VOT+) - I151-1 (GND1)*1

B - W-B

Sent voice signal

Destination assist service in use and vehicle occupant speaking to operator

A waveform synchronized with the sent voice is output.

I153-16 (VOT-) - I151-1 (GND1)*1

W - W-B

Sent voice signal

Destination assist service in use and vehicle occupant speaking to operator

A waveform synchronized with the sent voice is output.

I152-1 (VMTF) - I151-1 (GND1)

V - W-B

Visual mute signal

Power switch on (ACC) Screen display changing

3.5 V or higher → Below 1 V → 3.5 V or higher

I152-5 (CNH1)

L

Local bus communication signal

-

-

I152-6 (CNL1)

W

Local bus communication signal

-

-

I152-13 (CANH)

B

CAN communication signal

-

-

I152-14 (CANL)

W

CAN communication signal

-

-

I152-15 (ILL+) - I151-1 (GND1)

L - W-B

Illumination signal

Power switch on (IG), Light control switch in tail or head position

Below 1 V → 11 to 14 V

I152-16 (ILL-) - I151-1 (GND1)

V - W-B

Illumination signal

Power switch on (IG), light control switch off → tail or head position (Light intensity is not max or min.)

Below 1 V → Pulse generation

I152-19 (IG) - I151-1 (GND1)

P - W-B

Power source (IG)

Power switch off

Below 1 V

Power switch on (IG)

11 to 14 V

I152-21 (MIN+) - I151-1 (GND1)

W - W-B

Microphone voice signal

See "Check Microphone" in Operation Check

-

I152-22 (MIN-) - I151-1 (GND1)

R - W-B

Microphone voice signal

See "Check Microphone" in Operation Check

-

I152-23 (MACC) - I151-1 (GND1)*2

B - W-B

Telephone microphone assembly power supply

Power switch off

Below 1 V

Power switch on (ACC)

4 to 6 V

I152-24 (SGND) - Body ground

Shielded - Body ground

Shield ground

Always

Below 1 Ω

I152-25 (SNS2) - I151-1 (GND1)

P - W-B

Microphone connection detection signal

Always

Below 1 V

I154-1 (FR+) - I151-1 (GND1)

G - W-B

Sound signal (Right)

Audio system playing

A waveform synchronized with sound is output

I154-2 (FL+) - I151-1 (GND1)

W - W-B

Sound signal (Left)

Audio system playing

A waveform synchronized with sound is output

I154-3 (RL+) - I151-1 (GND1)

G - W-B

Voice signal

Voice guidance sounding

A waveform synchronized with voice signals is output

I154-6 (FR-) - I151-1 (GND1)

B - W-B

Sound signal (Right)

Audio system playing

A waveform synchronized with sound is output

I154-7 (FL-) - I151-1 (GND1)

R - W-B

Sound signal (Left)

Audio system playing

A waveform synchronized with sound is output

I154-8 (RL-) - I151-1 (GND1)

R - W-B

Voice signal

Voice guidance sounding

A waveform synchronized with voice signals is output

I162-1 (GVI-)

#

Video signal (Digital)

-

-

I162-2 (GVI+)

#

Video signal (Digital)

-

-

I162-3 (GVG1) - Body ground

Shielded - Body ground

Shield ground

Always

Below 1 Ω

I179-1 (USV1)

#

Power source

-

-

I179-2 (US1-)

#

Data signal

-

-

I179-3 (US1+)

#

Data signal

-

-

I179-4 (UGD1)

#

Ground

-

-

I179-5 (USG1) - Body ground

Shielded - Body ground

Shield ground

Always

Below 1 Ω

I172-1 (USB+)*1

#

Data signal

-

-

I172-2 (USB-)*1

#

Data signal

-

-

I172-3 (USBS)*1

Shielded

Ground

-

-

I181-1 (GPS)

#*1

B*2

GPS signal

-

-

RA-5 - I151-1 (GND1)

# - W-B

Power source of antenna

Power switch on (ACC)

Radio switch on and AM or FM selected

11 to 14 V

P32-3 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

P32-4 (WFL+) - P32-3 (GND)

B - W-B

Sound signal (Front Left)

Audio system playing

A waveform synchronized with sound signals is output

P32-5 (WFR+) - P32-3 (GND)

W - W-B

Sound signal (Front Right)

Audio system playing

A waveform synchronized with sound signals is output

P32-8 (RL+) - P32-3 (GND)

R - W-B

Sound signal (Rear Left)

Audio system playing

A waveform synchronized with sound signals is output

P32-9 (RR+) - P32-3 (GND)

B - W-B

Sound signal (Rear Right)

Audio system playing

A waveform synchronized with sound signals is output

P32-12 (FL+) - P32-3 (GND)

P - W-B

Sound signal (Front Left)

Audio system playing

A waveform synchronized with sound signals is output

P32-13 (FR+) - P32-3 (GND)

P - W-B

Sound signal (Front Right)

Audio system playing

A waveform synchronized with sound signals is output

P32-16 (+B2) - P32-3 (GND)

B - W-B

Power source (+B)

Power switch off

11 to 14 V

P32-18 (GND2) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

P32-19 (WFL-) - P32-3 (GND)

Y - W-B

Sound signal (Front Left)

Audio system playing

A waveform synchronized with sound signals is output

P32-20 (WFR-) - P32-3 (GND)

R - W-B

Sound signal (Front Right)

Audio system playing

A waveform synchronized with sound signals is output

P32-23 (RL-) - P32-3 (GND)

W - W-B

Sound signal (Rear Left)

Audio system playing

A waveform synchronized with sound signals is output

P32-24 (RR-) - P32-3 (GND)

G - W-B

Sound signal (Rear Right)

Audio system playing

A waveform synchronized with sound signals is output

P32-27 (FL-) - P32-3 (GND)

V - W-B

Sound signal (Front Left)

Audio system playing

A waveform synchronized with sound signals is output

P32-28 (FR-) - P32-3 (GND)

R - W-B

Sound signal (Front Right)

Audio system playing

A waveform synchronized with sound signals is output

P46-1 (MUTE) - P32-3 (GND)

P - W-B

Mute signal

Power switch on (ACC), audio system playing

2.0 V or higher

Audio system changing modes

Below 1 V

P46-2 (L-) - P32-3 (GND)

R - W-B

Sound signal (Left)

Audio system playing

A waveform synchronized with sound signals is output

P46-3 (L+) - P32-3 (GND)

W - W-B

Sound signal (Left)

Audio system playing

A waveform synchronized with sound signals is output

P46-4 (R-) - P32-3 (GND)

B - W-B

Sound signal (Right)

Audio system playing

A waveform synchronized with sound signals is output

P46-5 (R+) - P32-3 (GND)

G - W-B

Sound signal (Right)

Audio system playing

A waveform synchronized with sound signals is output

P46-6 (SLD) - Body ground

Shielded - Body ground

Shielded ground

Always

Below 1 Ω

P46-7 (TX-)

L

AVC-LAN communication signal

-

-

P46-8 (TX+)

R

AVC-LAN communication signal

-

-

P46-11 (SPD) - P32-3 (GND)

V - W-B

Vehicle speed signal

Power switch on (IG), wheel being rotated

Pulse generation

P46-12 (ACC) - P32-3 (GND)

P - W-B

Power source (ACC)

Power switch off

Below 1 V

Power switch on (ACC)

11 to 14 V

P46-14 (II1-) - P32-3 (GND)

R - W-B

Voice signal

Voice guidance sounding

A waveform synchronized with voice signals is output

P46-15 (II1+) - P32-3 (GND)

G - W-B

Voice signal

Voice guidance sounding

A waveform synchronized with voice signals is output

P46-18 (SLD1) - Body ground

Shielded - Body ground

Shielded ground

Always

Below 1 Ω

P46-24 (TMUT) - P32-3 (GND)*

B - W-B

Mute signal

Power switch on (ACC), audio system playing

2.0 V or higher

Audio system changing modes

Below 1 V

I42-2 (ILL) - I42-13 (GND1)

LG - W-B

Illumination signal

Power switch on (IG), light control switch off → tail or head position

Below 1 V → 11 to 14 V

I42-3 (REV) - I42-13(GND1)

R - W-B

Reverse signal

Power switch on (READY), shift position not in R → in R

2 V or less → 11 to 14 V

I42-7 (TX+)

B

AVC-LAN communication signal

-

-

I42-8 (V+) - I42-9 (V-)

W - R

Video signal

Power switch on (READY)

Shift position in R

Camera lens not covered, displaying image

Pulse generation

(Refer to waveform 1)

Power switch on (READY)

Shift position in R

Camera lens covered, blacking out screen

Pulse generation

(Refer to waveform 2)

I42-9 (V-) - Body ground

R - Body ground

Video signal ground

Always

Below 1 Ω

I42-10 (CA+) - I42-21 (CGND)

B - G

Power source

Power switch on (ACC)

5.5 to 7.05 V

I42-11 (VMTI) - I42-13 (GND1)

V - W-B

Visual mute signal

When image on display switches

3.5 V or higher → Below 1 V → 3.5 V or higher

I42-12 (B) - I42-13 (GND1)

BE - W-B

Power source (+B)

Power switch off

11 to 14 V

I42-13 (GND1) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

I42-19 (TX-)

P

AVC-LAN communication signal

-

-

I42-20 (CSLD) - Body ground

Shielded - Body ground

Shield ground

Always

Below 1 Ω

I42-21 (CGND) - Body ground

G - Body ground

Camera ground

Always

Below 1 Ω

I42-24 (ACC) - I42-13 (GND1)

Y - W-B

Power source (ACC)

Power switch on (ACC)

11 to 14 V

Power switch off

Below 1 Ω

I165-1 (GV+)

#

Video signal (Digital)

-

-

I165-2 (GV-)

#

Video signal (Digital)

-

-

I165-3 (GVG)

Shielded

Shield ground

-

-

Measurement terminal

I42-8 (V+) - I42-9 (V-)

Measurement setting

200 mV/DIV., 50 μs./DIV.

Condition

Power switch on (READY), shift position in R, camera lens not covered, displaying image

Measurement terminal

I42-8 (V+) - I42-9 (V-)

Measurement setting

200 mV/DIV., 50 μs./DIV.

Condition

Power switch on (READY), shift position in R, camera lens covered, blacking out screen

I71-1 (+B) - I71-10 (GND)

W - LA

Power source (+B)

Power switch off

11 to 14 V

I71-6 (ACC) - I71-10 (GND)

LG - LA

Power source (ACC)

Power switch on (ACC)

11 to 14 V

Power switch off

Below 1 V

I71-8 (MO-)

W

Local bus communication signal

-

-

I71-9 (MO+)

L

Local bus communication signal

-

-

I71-2 (ILL+) - I71-10 (GND)

SB - LA

Illumination signal

Power switch on (IG), light control switch off → tail or head position

Below 1 V → 11 to 14 V

I71-10 (GND) - Body ground

LA - Body ground

Ground

Always

Below 1 Ω

I71-5 (ILL-) - I71-10 (GND)

L - LA

Illumination signal

Power switch on (IG), light control switch off → tail or head position (Light intensity is not max or min.)

Below 1 V → Pulse generation