Terminals Of Ecu

WARNING: This page is about a different car, the 2008 Toyota Camry Solara. However, it is still accessible from the selected car via links, so may be relevant.

RADIO RECEIVER (SEPARATE TYPE AMPLIFIER SYSTEM)

Fig 1: Identifying Terminals Of ECU

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

CONNECTOR TERMINAL VOLTAGE SPECIFICATION

Symbols (Terminal No.)	Wiring Color	Terminal Description	Condition	Specification
B (R7-1) - GND (R7-20)	L-Y - BR	Battery	Always	10 to 14 V
ILL+ (R7-2) - GND (R7-20)	G-BR	Illumination signal	Light control switch OFF → TAIL	Below 1 V → 10 to 14 V
TX+ (R7-5) - GND (R7-20)	R-BR	AVC-LAN communication signal	Turn ignition switch on (ACC)	2 to 3V
MUTE (R7-7) - GND (R7-20)	L-BR	MUTE signal	Audio system is playing → Changing	Above 3.5 V → Below 1 V
R+ (R7-8) - GND (R7-20)	B-BR	Sound signal (Right)	Audio system is playing	A waveform synchronized with sounds is output
L+ (R7-9) - GND (R7-20)	G-BR	Sound signal (Left)	Audio system is playing	A waveform synchronized with sounds is output
SGND (R7-10) - Body ground	Shielded - Body ground	Shield ground	Always	Below 1 V
ACC (R7-11) - GND (R7-20)	GR-BR	Accessory (ON)	Turn ignition switch on (ACC)	10 to 14V
ILL- (R7-12) - GND (R7-20)	W-B - BR	Illumination (rheostat) signal	Light control switch OFF → TAIL	Below 1 V → Pulse generation
ANT (R7-13) - GND (R7-20)	B-R - BR	Power source of antenna	Radio switch ON and AM or FM	10 to 14 V
TX- (R7-15) - GND (R7-20)	W-BR	AVC-LAN communication signal	Turn ignition switch on (ACC)	2 to 3V
R- (R7-18) - GND (R7-20)	W-BR	Sound signal (Right)	Audio system is playing	A waveform synchronized with sounds is output
L- (R7-19) - GND (R7-20)	R-BR	Sound signal (Left)	Audio system is playing	A waveform synchronized with sounds is output
GND (R7-20) - Body ground	BR - Body ground	Ground	Always	Below 1 V
SWG (R6-6) - GND (R7-20)	P-L - BR	Steering pad switch ground	Always	Below 1 V
SW1 (R6-7) - GND (R7-20)	P-G - BR	Steering pad switch signal	Steering pad switch not operated → 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 (R6-8) - GND (R7-20)	P-B - BR	Steering pad switch signal	Steering pad switch not operated → MODE switch pushed → ON HOOK switch pushed → OFF HOOK switch pushed	4 V or more → Approx. 0.5 V → Approx. 0.9 V → Approx. 2.0 V
IVO+ (R6-11) - GND (R7-20)	V-BR	Voice signal	"Bluetooth" handsfree voice signal is playing	A waveform synchronized with sounds is output
IVO- (R6-12) - GND (R7-20)	LG-BR	Voice signal	"Bluetooth" handsfree voice signal is playing	A waveform synchronized with sounds is output
SLD1 (R6-13)-Body ground	Shielded - Body ground	Shield ground	Always	Below 1 V
VAR+ (R6-15) - GND (R7-20)	LG-BR	Sound signal (Right)	External device is playing (When stereo jack is used)	A waveform synchronized with sounds is output
VA- (R6-16) - GND (R7-20)	Shielded - BR	Shield ground	Always	Below 1 V
VAL+ (R6-17) - GND (R7-20)	V-BR	Sound signal (Left)	External device is playing (When stereo jack is used)	A waveform synchronized with sounds is output
ADPG (R6-19) - GND (R7-20)	R-BR	External device connection detection signal	External device is connected	Below 1 V
MIC- (R16-1) - GND (R7-20)	L-BR	Microphone voice signal	Bluetooth handsfree function is ON	A waveform synchronized with sounds is output
MIC+ (R16-2) - GND (R7-20)	R-BR	Microphone voice signal	Bluetooth handsfree function is ON	A waveform synchronized with sounds is output
TSW- (R16-3) - GND (R7-20)	L-BR	Ground	Always	Below 1 V
SPD (R16-4) - GND (R7-20)	V-W - W-B	Speed signal from combination meter	Turn ignition switch on (IG). Turn drive wheels slowly.	Pulse generation
+B (R16-5) - GND (R7-20)	L-Y - BR	Battery	Always	10 to 14 V
SGND (R16-6) - GND (R7-20)	L-BR	Ground	Always	Below 1 V
MACC (R16-7) - GND (R7-20)	G-R - BR	Microphone AMP power supply	Turn ignition switch off → on (ACC)	Below 1 V → 5 V
ACC (R16-16) - GND (R7-20)	GR-BR	Accessory (ON)	Turn ignition switch off → on (ACC)	Below 1 V → 10 to 14 V

RADIO RECEIVER (BUILT-IN TYPE AMPLIFIER SYSTEM)

Fig 2: Identifying Radio Receiver Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

CONNECTOR TERMINAL VOLTAGE SPECIFICATION

Symbols (Terminal No.)

Wiring Color

Terminal Description

Condition

Specification

FR+ (R3-1) - GND (R3-7)

LG-BR

Sound signal (Front Right)

Audio system is playing

A waveform synchronized with sounds is output

FL+ (R3-2) - GND (R3-7)

P-BR

Sound signal (Front Left)

Audio system is playing

A waveform synchronized with sounds is output

ACC (R3-3) - GND (R3-7)

GR-BR

Accessory (ON)

Turn ignition switch off → on (ACC)

Below 1V → 10 to 14 V

+B (R3-4) - GND (R3-7)

L-Y - BR

Battery

Always

10 to 14 V

FR- (R3-5) - GND (R3-7)

L-BR

Sound signal (Front Right)

Audio system is playing

A waveform synchronized with sounds is output

FL- (R3-6) - GND (R3-7)

V-BR

Sound signal (Front Left)

Audio system is playing

A waveform synchronized with sounds is output

GND (R3-7) - Body ground

BR - Body ground

Ground

Always

Below 1 V

ANT (R3-8) - GND (R3-7)

B-R - BR

Power source of antenna

Radio switch ON and AM or FM

10 to 14 V

ILL+ (R3-10) - GND (R3-7)

G - BR

Illumination signal

Light control switch OFF → TAIL or HEAD

Below 1V → 10 to 14 V

RR+ (R4-1) - GND (R3-7)

R-BR

Sound signal (Rear Right)

Audio system is playing

A waveform synchronized with sounds is output

RL+ (R4-2) - GND (R3-7)

B-BR

Sound signal (Rear Left)

Audio system is playing

A waveform synchronized with sounds is output

RR- (R4-3) - GND (R3-7)

W-BR

Sound signal (Rear Right)

Audio system is playing

A waveform synchronized with sounds is output

ILL- (R4-5) - GND (R3-7)

W-B - BR

Illumination (rheostat) signal

Light control switch OFF → TAIL or HEAD

Below 1 V → Pulse generation

RL- (R4-6) - GND (R3-7)

Y-BR

Sound signal (Rear Left)

Audio system is playing

A waveform synchronized with sounds is output

SPD (R2-3) - GND (R3-7)

V-W - BR

Speed signal from combination meter

Turn ignition switch on (IG).
Turn drive wheels slowly.

Pulse generation

SWG (R2-6) - GND (R3-7)

Y (⁽¹⁾), P-L (⁽²⁾)-BR

Steering pad switch ground

Always

Below 1 V

SW1 (R2-7) - GND (R3-7)

LG-B (⁽¹⁾), P-G (⁽²⁾) - BR

Steering pad switch signal

Steering pad switch not operated
→ 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 (R2-8) - GND (R3-7)

L (⁽¹⁾), P-B (⁽²⁾)-BR

Steering pad switch signal

Steering pad switch not operated → MODE switch pushed

4 V or more → Below 2.5 V

VAR+ (R2-15) - GND (R3-7)

LG - BR

Sound signal (Right)

External device is playing (When stereo jack is used)

A waveform synchronized with sounds is output

VA- (R2-16) - GND (R3-7)

Shielded - BR

Shield ground

Always

Below 1 V

VAL+ (R2-17) - GND (R3-7)

V - BR

Sound signal (Left)

External device is playing (When stereo jack is used)

A waveform synchronized with sounds is output

ADPG (R2-19) - GND (R3-7)

R - BR

External device connection detection signal

External device is connected

Below 1 V

⁽¹⁾

for Coupe

⁽²⁾	for Convertible

STEREO COMPONENT AMPLIFIER (SEPARATE TYPE AMPLIFIER SYSTEM)

Fig 3: Identifying Stereo Component Amplifier Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

CONNECTOR TERMINAL VOLTAGE SPECIFICATION

Symbols (Terminal No.)

Wiring Color

Terminal Description

Condition

Specification

B+ (S10-1) - GND (S10-16)

L-R (⁽¹⁾), L-Y (⁽²⁾)-W-B (⁽¹⁾), BR (⁽²⁾)

Battery

Always

10 to 14 V

TWL+ (S10-2) (⁽¹⁾) - GND (S10-16)

G (⁽¹⁾)-W-B (⁽¹⁾), BR (⁽²⁾)

Sound signal (Front Left)

Audio system is playing

A waveform synchronized with sounds is output

WF2+ (S10-2) (⁽³⁾) - GND (S10-16)

G-W (⁽³⁾) - W-B (⁽¹⁾), BR (⁽²⁾)

Sound signal (Woofer Box)

Audio system is playing

A waveform synchronized with sounds is output

TWR+ (S10-3) (⁽¹⁾) - GND (S10-16)

LG (⁽¹⁾)-W-B (⁽¹⁾), BR (⁽²⁾)

Sound signal (Front Right)

Audio system is playing

A waveform synchronized with sounds is output

WF1+ (S10-3) (⁽³⁾) - GND (S10-16)

L-R (⁽³⁾)-W-B (⁽¹⁾), BR (⁽²⁾)

Sound signal (Woofer Box)

Audio system is playing

A waveform synchronized with sounds is output

RL+ (S10-4) - GND (S10-16)

B - W-B (⁽¹⁾), BR (⁽²⁾)

Sound signal (Rear Left)

Audio system is playing

A waveform synchronized with sounds is output

RR+ (S10-5) - GND (S10-16)

R - W-B (⁽¹⁾), BR (⁽²⁾)

Sound signal (Rear Right)

Audio system is playing

A waveform synchronized with sounds is output

FL+ (S10-6) - GND (S10-16)

P - W-B (⁽¹⁾), BR (⁽²⁾)

Sound signal (Front Left)

Audio system is playing

A waveform synchronized with sounds is output

FR+ (S10-7) - GND (S10-16)

LG - W-B (⁽¹⁾), BR (⁽²⁾)

Sound signal (Front Right)

Audio system is playing

A waveform synchronized with sounds is output

B2+ (S10-10) - GND (S10-16)

L-R (⁽¹⁾),L-Y (⁽²⁾)-W-B (⁽¹⁾), BR (⁽²⁾)

Battery

Always

10 to 14 V

TWL- (S10-11) (⁽¹⁾) - GND (S10-16)

G-B (⁽¹⁾) - W-B (⁽¹⁾), BR (⁽²⁾)

Sound signal (Front Left)

Audio system is playing

A waveform synchronized with sounds is output

WF2- (S10-11) (⁽³⁾) - GND (S10-16)

BR (⁽³⁾)-W-B (⁽¹⁾), BR (⁽²⁾)

Sound signal (Woofer Box)

Audio system is playing

A waveform synchronized with sounds is output

TWR- (S10-12) (⁽¹⁾) - GND (S10-16)

L (⁽¹⁾)-W-B (⁽¹⁾), BR (⁽²⁾)

Sound signal (Front Right)

Audio system is playing

A waveform synchronized with sounds is output

WF1- (S10-12) (⁽³⁾) - GND (S10-16)

L-B (⁽³⁾)-W-B (⁽¹⁾), BR (⁽²⁾)

Sound signal (Woofer Box)

Audio system is playing

A waveform synchronized with sounds is output

RL - (S10-13) - GND (S10-16)

Y - W-B (⁽¹⁾), BR (⁽²⁾)

Sound signal (Rear Left)

Audio system is playing

A waveform synchronized with sounds is output

RR - (S10-14) - GND (S10-16)

W - W-B (⁽¹⁾), BR (⁽²⁾)

Sound signal (Rear Right)

Audio system is playing

A waveform synchronized with sounds is output

GND2 (S10-15) (⁽¹⁾) - Body ground

W-B - Body ground

Ground

Always

Below 1 V

E (S10-15) (⁽²⁾) - Body ground

BR - Body ground

Ground

Always

Below 1 V

GND (S10-16) - Body ground

W - B (⁽¹⁾), BR (⁽²⁾)-Body ground

Ground

Always

Below 1 V

FL- (S10-17) - GND (S10-16)

V - W-B (⁽¹⁾), BR (⁽²⁾)

Sound signal (Front Left)

Audio system is playing

A waveform synchronized with sounds is output

FR- (S10-18) - GND (S10-16)

L - W-B (⁽¹⁾), BR (⁽²⁾)

Sound signal (Front Right)

Audio system is playing

A waveform synchronized with sounds is output

MUTE (S11-1) - GND (S10-16)

L - W-B (⁽¹⁾), BR (⁽²⁾)

Mute signal from radio receiver

Audio system is changing

Above 3.5 V → Below 3.5 V

L- (S11-2) - GND (S10-16)

R - W-B (⁽¹⁾), BR (⁽²⁾)

Sound signal from radio receiver (Left)

Audio system is playing

A waveform synchronized with sounds is output

L+ (S11-3) - GND (S10-16)

G - W-B (⁽¹⁾), BR (⁽²⁾)

Sound signal from radio receiver (Left)

Audio system is playing

A waveform synchronized with sounds is output

R- (S11-4) - GND (S10-16)

W - W-B (⁽¹⁾), BR (⁽²⁾)

Sound signal from radio receiver (Right)

Audio system is playing

A waveform synchronized with sounds is output

R+ (S11-5) - GND (S10-16)

B - W-B (⁽¹⁾),BR (⁽²⁾)

Sound signal from radio receiver (Right)

Audio system is playing

A waveform synchronized with sounds is output

TX- (S11-7) - GND (S10-16)

W - W-B (⁽¹⁾), BR (⁽²⁾)

AVC-LAN communication signal

Turn ignition switch to ACC

2 to 3V

TX+ (S11-8) - GND (S10-16)

R - W-B (⁽¹⁾), BR (⁽²⁾)

AVC-LAN communication signal

Turn ignition switch to ACC

2 to 3V

TSSW (S11-9) (⁽²⁾) - GND (S10-16)

L - W (⁽²⁾)-W-B (⁽¹⁾), BR (⁽²⁾)

Convertible top open/ close signal

Convertible top is open

Below 1 V

SPD (S11-11) - GND (S10-16)

V - W-W-B (⁽¹⁾), BR (⁽²⁾)

Speed signal from combination meter

Turn ignition switch ON. Turn drive wheels slowly.

Pulse generation

ACC (S11-12) - GND (S10-16)

GR (⁽¹⁾) - W-B (⁽¹⁾), BR (⁽²⁾)

Accessory (ON)

Turn ignition switch OFF → ACC

Below 1V → 10 to 14 V

TX- (S11-19) (⁽²⁾) - GND (S10-16)

W (⁽²⁾) - W-B (⁽¹⁾), BR (⁽²⁾)

AVC-LAN communication signal

Turn ignition switch to ACC

2 to 3 V

TX+ (S11-20) (⁽²⁾) - GND (S10-16)

R (⁽²⁾)-W-B (⁽¹⁾), BR (⁽²⁾)

AVC-LAN communication signal

Turn ignition switch to ACC

2 to 3 V

INT- (S11-22) - GND (S10-16)

LG - W-B (⁽¹⁾), BR (⁽²⁾)

Voice signal

Navigation or "Bluetooth" handsfree voice signal is provided

A waveform synchronized with sounds is output

INT+ (S11-23) - GND (S10-16)

V-W-B (⁽¹⁾), BR (⁽²⁾)

Voice signal

Navigation or "Bluetooth" handsfree voice signal is provided

A waveform synchronized with sounds is output

⁽¹⁾

for Coupe

⁽²⁾	for Convertible

⁽³⁾	for Convertible (with No. 1 woofer box speaker assembly)