Terminals Of Ecu

WARNING: This page is about a different car, the 2006 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

RADIO AND NAVIGATION ASSEMBLY

Fig 1: Identifying ECU Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

CONNECTOR TERMINALS VOLTAGE SPECIFICATION

Symbols (Terminal No.)

Wiring Color

Terminal Description

Condition

Specification

PKB (R9-1) - GND (R12-20)

LG - BR

Parking brake signal

See "Vehicle Signal Check" (See DISPLAY CHECK MODE )

SPD (R9-3) - GND (R12-20)

V-R - BR

Speed signal from combination meter

See "Vehicle Signal Check" (See DISPLAY CHECK MODE )

REV (R9-5) - GND (R12-20)

R-Y - BR

Reverse signal

See "Vehicle Signal Check" (See DISPLAY CHECK MODE )

SWG (R10-6) - Body ground

W-R - Body ground

Steering pad switch signal

Always

Below 1 V

SW1 (R10-7) - SWG (R10-6)

V-W - W-R

Steering pad switch signal

No switch is pushed
--> SEEK+ switch pushed
--> SEEK- switch pushed
--> VOL+ switch pushed
--> VOL- switch pushed

4 V or more
--> Approx. 0.5 V
--> Approx. 0.9 V
--> Approx. 2.0 V
--> Approx. 3.4 V

SW2 (R10-8) - SWG (R10-6)

Y-B - W-R

Steering pad switch signal

No switch is pushed
--> MODE switch pushed
--> ON HOOK switch pushed
--> OFF HOOK switch pushed
--> VOICE switch pushed

4 V or more
--> Approx. 0.5 V
--> Approx. 0.9 V
--> Approx. 2.0 V
--> Approx. 3.4 V

IVO+ (R10-11) - GND (R12-20)

L - BR

Voice guidance signal

Voice guidance is provided

A waveform synchronized with sounds is output

IVO- (R10-12) - GND (R12-20)

P - BR

Voice guidance signal

Voice guidance is provided

A waveform synchronized with sounds is output

SLD1 (R10-13) - Body ground

Shielded - Body ground

Voice sound signal shielded ground

Always

Below 1 V

CSLD (R11-1) - Body ground (⁽¹⁾)

Shielded - Body ground

Shielded ground

Always

Below 1 V

CDR+ (R11-2) - GND (R12-20) (⁽¹⁾)

B - BR

RSE system sound signal

RSE system is playing

A waveform synchronized with sounds is output

CDR- (R11-3) - GND (R12-20) (⁽¹⁾)

W - BR

RSE system sound signal

RSE system is playing

A waveform synchronized with sounds is output

CDL+ (R11-4) - GND (R12-20) (⁽¹⁾)

R - BR

RSE system sound signal

RSE system is playing

A waveform synchronized with sounds is output

CDL- (R11-5) - GND (R12-20) (⁽¹⁾)

G - BR

RSE system sound signal

RSE system is playing

A waveform synchronized with sounds is output

MUTE (R11-6) - GND (R12-20) (⁽¹⁾)

V - BR

Mute signal

RSE system is playing --> Source is changed with remote controller (signal from RSE system)

Above 3.5 V --> Below 1 V

TXM+ (R11-9) - GND (R12-20) (⁽¹⁾)

R - BR

AVC-LAN communication signal

Turn ignition switch to ACC

2 to 3 V

TXM- (R11-10) - GND (R12-20) (⁽¹⁾)

G - BR

AVC-LAN communication signal

Turn ignition switch to ACC

2 to 3 V

B (R12-1) - GND (R12-20)

L-Y - BR

Battery

Always

10 to 14 V

ILL+ (R12-2) - GND (R12-20)

G - BR

Illumination signal

Turn ignition switch ON Light control switch OFF --> TAIL or ON

Below 1 V --> 10 to 14 V

ATX+ (R12-5) - GND (R12-20)

B - BR

AVC-LAN communication signal

Turn ignition switch to ACC

2 to 3 V

MUTE (R12-7) - GND (R12-20)

W-R - BR

Mute signal

Audio system is playing --> Changing

Above 3.5 V --> Below 1 V

R+ (R12-8) - GND (R12-20)

B - BR

Sound signal (Right)

Audio system is playing

A waveform synchronized with sounds is output

L+ (R12-9) - GND (R12-20)

R - BR

Sound signal (Left)

Audio system is playing

A waveform synchronized with sounds is output

SLD (R12-10) - Body ground

Shielded - Body ground

Shielded ground

Always

Below 1 V

ACC (R12-11) - GND (R12-20)

GR - BR

Accessory (ON)

Turn ignition switch OFF --> ACC or ON

Below 1 V --> 10 to 14 V

ILL- (R12-12) - GND (R12-20)

W-G - BR

Illumination signal

Turn ignition switch ON
Light control switch OFF --> TAIL or ON

Below 1 V --> 10 to 14 V

ANT (R12-13) - GND (R12-20)

B - BR

Power source of antenna

Radio switch ON and AM or FM

10 to 14 V

ATX- (R12-15) - GND (R12-20)

W - BR

AVC-LAN communication signal

Turn ignition switch to ACC

2 to 3 V

R- (R12-18) - GND (R12-20)

W - BR

Sound signal (Right)

Audio system is playing

A waveform synchronized with sounds is output

L- (R12-19) - GND (R12-20)

G - BR

Sound signal (Left)

Audio system is playing

A waveform synchronized with sounds is output

GND (R12-20) - Body ground

BR - Body ground

Ground

Always

Below 1 V

MIC+ (R26-19) - GND (R12-20)

L - BR

Microphone voice signal

See "Microphone Check" (See DISPLAY CHECK MODE )

MIC- (R26-20) - Body ground

P - Body ground

Microphone voice signal

See "Microphone Check" (See DISPLAY CHECK MODE )

MACC (R26-17) - GND (R12-20)

W - BR

Microphone AMP power supply

Turn ignition switch OFF --> ON

Below 1 V --> 5 V

TSW- (R26-12) - GND (R12-20)

B - BR

Telephone relation switch signal

Always

Below 1 V

SGND- (R26-18) - GND (R12-20)

B - BR

Ground

Always

Below 1 V

VV+ (R27-1) - GND (R12-20) (⁽¹⁾)

P - BR

Display signal

DVD is played on radio and navigation assembly

A waveform synchronized with display signals is output (Refer to waveform 1)

VV- (R27-4) - Body ground (⁽¹⁾)

L - Body ground

Ground

Always

Below 1 V

VAR+ (R27-2) - GND (R12-20)

G - BR

Sound signal (Right)

External device is playing (When stereo jack is used)

A waveform synchronized with sounds is output

VAL+ (R27-3) - GND (R12-20)

R - BR

Sound signal (Left)

External device is playing (When stereo jack is used)

A waveform synchronized with sounds is output

VA- (R27-5) - Body ground

Shielded - Body ground

Shielded ground

Always

Below 1 V

ADPG (R27-6) - GND (R12-20)

L - BR

External device connection detection signal

External device is connected

Below 1 V

⁽¹⁾	With Rear Seat Entertainment System

Reference: waveform 1
HINT:
- Terminal: VV+ - VV-
- Gauge set: 200 mV/DIV., 10 ms/DIV.
- Condition: DVD is played on radio and navigation assembly.
  
  Fig 2: Identifying Waveform 1
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

STEREO COMPONENT AMPLIFIER

Fig 3: Identifying Stereo Component Amplifier Connector

CONNECTOR TERMINALS VOLTAGE SPECIFICATION

Symbols (Terminal No.)	Wiring Color	Terminal Description	Condition	Specification
MUTE (S22-1) - GND2 (S23-15)	W-R - BR	Mute signal from radio receiver	Audio system is playing --> Changing	Above 3.5 V --> Below 1 V
L- (S22-2) - GND2 (S23-15)	G - BR	Sound signal (Left)	Audio system is playing	A waveform synchronized with sounds is output
L+ (S22-3) - GND2 (S23-15)	R - BR	Sound signal (Left)	Audio system is playing	A waveform synchronized with sounds is output
R- (S22-4) - GND2 (S23-15)	W - BR	Sound signal (Right)	Audio system is playing	A waveform synchronized with sounds is output
R+ (S22-5) - GND2 (S23-15)	B - BR	Sound signal (Right)	Audio system is playing	A waveform synchronized with sounds is output
SLD (S22-6) - Body ground	Shielded - Body ground	Shielded ground	Always	Below 1 V
TX- (S22-7) - GND2 (S23-15)	W - BR	AVC-LAN communication signal	Turn ignition switch to ACC	2 to 3 V
TX+ (S22-8) - GND2 (S23-15)	B - BR	AVC-LAN communication signal	Turn ignition switch to ACC	2 to 3 V
SPD (S22-11) - GND2 (S23-15)	V-R - BR	Speed signal from combination meter	Turn ignition switch to ON Drive wheels are turned slowly	Pulse generation
ACC (S22-12) - GND2 (S23-15)	GR - BR	Accessory (ON)	Turn ignition switch OFF --> ACC	Below 1 V --> 10 to 14 V
INT- (S22-22) - GND2 (S23-15)	P - BR	Voice guidance signal	Voice guidance is provided	A waveform synchronized with sounds is output
INT+ (S22-23) - GND2 (S23-15)	L - BR	Voice guidance signal	Voice guidance is provided	A waveform synchronized with sounds is output
+B (S23-1) - GND2 (S23-15)	W-L - BR	Battery	Always	10 to 14 V
CTR+ (S23-3) - GND2 (S23-15)	G - BR	Sound signal (Front Center)	Audio system is playing	A waveform synchronized with sounds is output
RL+ (S23-4) - GND2 (S23-15)	B - BR	Sound signal (Rear Left)	Audio system is playing	A waveform synchronized with sounds is output
RR+ (S23-5) - GND2 (S23-15)	R - BR	Sound signal (Rear Right)	Audio system is playing	A waveform synchronized with sounds is output
FL+ (S23-6) - GND2 (S23-15)	P - BR	Sound signal (Front Left)	Audio system is playing	A waveform synchronized with sounds is output
FR+ (S23-7) - GND2 (S23-15)	LG - BR	Sound signal (Front Right)	Audio system is playing	A waveform synchronized with sounds is output
WFL+ (S23-8) - GND2 (S23-15)	BR - BR	Sound signal (Woofer Box)	Audio system is playing	A waveform synchronized with sounds is output
WFR+ (S23-9) - GND2 (S23-15)	L-B - BR	Sound signal (Woofer Box)	Audio system is playing	A waveform synchronized with sounds is output
+B2 (S23-10) - GND2 (S23-15)	W-L - BR	Battery	Always	10 to 14 V
CTR- (S23-12) - GND2 (S23-15)	G-B - BR	Sound signal (Front Center)	Audio system is playing	A waveform synchronized with sounds is output
RL- (S23-13) - GND2 (S23-15)	Y - BR	Sound signal (Rear Left)	Audio system is playing	A waveform synchronized with sounds is output
RR- (S23-14) - GND2 (S23-15)	W - BR	Sound signal (Rear Right)	Audio system is playing	A waveform synchronized with sounds is output
GND2 (S23-15) - Body ground	BR - Body ground	Ground	Always	Below 1 V
GND (S23-16) - Body ground	BR - Body ground	Ground	Always	Below 1 V
FL- (S23-17) - GND2 (S23-15)	V - BR	Sound signal (Front Left)	Audio system is playing	A waveform synchronized with sounds is output
FR- (S23-18) - GND2 (S23-15)	L - BR	Sound signal (Front Right)	Audio system is playing	A waveform synchronized with sounds is output
WFL- (S23-19) - GND2 (S23-15)	G-W - BR	Sound signal (Woofer Box)	Audio system is playing	A waveform synchronized with sounds is output
WFR- (S23-20) - GND2 (S23-15)	L-R - BR	Sound signal (Woofer Box)	Audio system is playing	A waveform synchronized with sounds is output

TELEVISION DISPLAY ASSEMBLY (SEE TERMINALS OF ECU )