Terminals Of Ecu

RADIO RECEIVER (STANDARD SYSTEM)

Fig 1: Identifying Radio Receiver Terminals (Standard System)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

TERMINAL DESCRIPTION SPECIFICATION CONDITION CHART

Symbols (Terminal No.)	Wiring Color	Terminal Description	Condition	Specification
RR+ (R2-1) - GND (R3-7)	R - BR	Sound signal (Rear Right)	Audio system is sounding	-
RL+ (R2-2) - GND (R3-7)	B - BR	Sound signal (Rear Left)	Audio system is sounding	-
RR- (R2-3) - GND (R3-7)	W - BR	Sound signal (Rear Right)	Audio system is sounding	-
ILL- (R2-5) - Body ground	W - Body ground	Illumination (rheostat) signal	Turn light control switch OFF → TAIL or HEAD (Light intensity is max.)	Below 1 V → 10 to 14 V
RL- (R2-6) - GND (R3-7)	Y - BR	Sound signal (Rear Left)	Audio system is sounding	-
FR+ (R3-1) - GND (R3-7)	LG - BR	Sound signal (Front Right)	Audio system is sounding	-
FL+ (R3-2) - GND (R3-7)	P - BR	Sound signal (Front Left)	Audio system is sounding	-
ACC+B (R3-3) - GND (R3-7)	GR - BR	Accessory (ON)	Turn ignition switch OFF → ACC or ON	Below 1 V → 10 to 14 V
BU+B (R3-4) - GND (R3-7)	L-B - BR	Battery	Always	10 to 14 V
FR- (R3-5) - GND (R3-7)	L - BR	Sound signal (Front Right)	Audio system is sounding	-
FL- (R3-6) - GND (R3-7)	V - BR	Sound signal (Front Left)	Audio system is sounding	-
GND (R3-7) - Body ground	BR - Body ground	Ground	Always	Below 1 V
ANT (R3-8) - GND (R3-7)	O - BR	Power source of antenna	Radio switch ON	10 to 14 V
ILL+(R3-10) - GND (R3-7)	G - BR	Illumination signal	Turn light control switch OFF → TAIL or HEAD (Light intensity is max.)	Below 1 V → 10 to 14 V

RADIO RECEIVER (JBL SYSTEM)

Fig 2: Identifying Radio Receiver Terminals (JBL System)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

TERMINAL DESCRIPTION SPECIFICATION CONDITION CHART

Symbols (Terminal No.)

Wiring Color

Terminal Description

Condition

Specification

B (R4-1) - GND(R4-20)

L-B - BR

Battery

Always

10 to 14 V

ILL+ (R4-2) - GND (R4-20)

G - BR

Illumination signal

Turn light control switch OFF →
TAIL or HEAD (Light intensity is max.)

Below 1V → 10 to 14 V

AMP+ (R4-3) - GND (R4-20)

V - BR

Stereo component amplifier control signal

Turn ignition switch OFF → ACC or ON

Below 1 V → 10 to 14 V

MUTE (R4-7) - GND (R4-20)

BR - BR

MUTE signal

Audio system is sounding → changing

Above 3.5 V → Below 1 V

FR+ (R4-8) - GND (R4-20)

W - BR

Sound signal (Front Right)

Audio system is sounding

FL+ (R4-9) - GND (R4-20)

B - BR

Sound signal (Front Left)

Audio system is sounding

SLD (R4-10) - Body ground

Shielded - Body ground

Shield ground

Always

Below 1 V

ACC (R4-11) - GND (R4-20)

GR - BR

Accessory

Turn ignition switch OFF → ACC or ON

Below 1 V → 10 to 14 V

ILL- (R4-12) - GND (R4-20)

W - BR

Illumination (rheostat) signal

Turn light control switch OFF →
TAIL or HEAD (Light intensity is max.)

Below 1 V → 10 to 14 V

ANT+ (R4-13) - GND (R4-20)

O - BR

Power source of antenna

Radio switch ON

10 to 14 V

S.GND (R4-16) - Body ground

Y - Body ground

Signal ground

Always

Below 1 V

BEEP (R4-17) - GND (R4-20)

L - BR

Beep sound signal

Audio system switch pushed

RR+ (R4-18) - GND (R4-20)

G - BR

Sound signal (Rear Right)

Audio system is sounding

RL+ (R4-19) - GND (R4-20)

R - BR

Sound signal (Rear Left)

Audio system is sounding

GND (R4-20) - Body ground

BR - Body ground

Ground

Always

Below 1 V

R+ (R22-2) - GND (R4-20) (⁽¹⁾)

B - BR

Sound signal from RSE

RSE system is sounding

R- (R22-3) - GND (R4-20) (⁽¹⁾)

W - BR

Sound signal from RSE

RSE system is sounding

L+ (R22-4) - GND (R4-20) (⁽¹⁾)

R - BR

Sound signal from RSE

RSE system is sounding

L- (R22-5) - GND (R4-20) (⁽¹⁾)

G - BR

Sound signal from RSE

RSE system is sounding

MUTE (R22-6) - GND (R4-20) H)

P - BR

MUTE signal from RSE

RSE system is sounding → changing

Above 3.5 V → Below 1 V

TX+ (R22-9) - GND (R4-20) (⁽²⁾)

LG - BR

AVC-LAN communication signal

Turn ignition switch to ACC

2 to 3 V

TX- (R22-10) - GND (R4-20) (⁽²⁾)

O - BR

AVC-LAN communication signal

Turn ignition switch to ACC

2 to 3 V

GMD (R23-6) - GND (R4-20)

GR - BR

Steering pad switch ground

Always

Below 1 V

SW1 (R23-7) - GND (R4-20)

R - 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 (R23-8) - GND (R4-20)

LG - BR

Steering pad switch signal

Steering pad switch not operated
→ MODE switch pushed

4 V or more →
Below 2.5 V

TX1+ (R23-9) - GND (R4-20) (⁽¹⁾)

Y - BR

AVC-LAN communication signal

Turn ignition switch to ACC

2 to 3 V

TX1- (R23-10) - GND (R4-20) (⁽¹⁾)

L - BR

AVC-LAN communication signal

Turn ignition switch to ACC

2 to 3 V

SLD1 (R23-14) - Body ground H) (⁽¹⁾)

Shielded - Body ground

Shield ground

Always

Below 1 V

RSR+ (R23-15) - GND (R4-20) (⁽¹⁾)

P - BR

Sound signal to RSE

Audio system is playing

RSR- (R23-16) - GND (R4-20) (⁽¹⁾)

LG - BR

Sound signal to RSE

Audio system is playing

RSL+ (R23-17) - GND (R4-20) (⁽¹⁾)

SB - BR

Sound signal to RSE

Audio system is playing

RSL- (R23-18) - GND (R4-20) (⁽¹⁾)

BR - BR

Sound signal to RSE

Audio system is playing

RMU (R23-19) - GND (R4-20) (⁽¹⁾)

O - BR

MUTE signal to RSE

Audio system is playing →
Changing

Above 3.5 V →
Below 1 V

⁽¹⁾	with Rear Seat Entertainment System

⁽²⁾	with Navigation System

STEREO COMPONENT AMPLIFIER (JBL SYSTEM)

Fig 3: Identifying Stereo Component Amplifier (JBL System) Connector Terminals

TERMINAL DESCRIPTION SPECIFICATION CONDITION CHART

Symbols (Terminal No.)	Wiring Color	Terminal Description	Condition	Specification
AMP ON (S22-D - PWR GND (S23-12)	P - W-B	Stereo component amplifier control signal	Radio switch is ON	10 to 14 V
ACC ON (S22-2) - PWR GND (S23-12)	G - W-B	Accessory (ON)	Turn ignition switch OFF → ACC or ON	Below 1 V → 10 to 14 V
BEEP (S22-4) - PWR GND (S23-12)	L - W-B	Beep sound signal	Audio system is sounding	-
LFIN (S22-5) - PWR GND (S23-12)	B - W-B	Sound signal (Front Left)	Audio system is sounding	-
RFIN (S22-6) - PWR GND (S23-12)	W - W-B	Sound signal (Front Right)	Audio system is sounding	-
SIG GND (S22-11) - Body ground	Y - Body ground	Shield ground	Always	Below 1 V
MUTE (S22-12) - PWR GND (S23-12)	BR - W-B	MUTE signal	Audio system is sounding → changing	Above 3.5 V → Below 1 V
LRIN (S22-13) - PWR GND (S23-12)	R - W-B	Sound signal (Rear Left)	Audio system is sounding	-
RRIN (S22-14) - PWR GND (S23-12)	G - W-B	Sound signal (Rear Right)	Audio system is sounding	-
RF+ SPKR (S23-1) - PWR GND (S23-12)	LG - W-B	Sound signal (Front Right)	Audio system is sounding	-
LF+ SPKR (S23-2) - PWR GND (S23-12)	Y - W-B	Sound signal (Front Left)	Audio system is sounding	-
RR+ SPKR (S23-3) - PWR GND (S23-12)	R - W-B	Sound signal (Rear Right)	Audio system is sounding	-
LR+ SPKR (S23-4) - PWR GND (S23-12)	GR - W-B	Sound signal (Rear Left)	Audio system is sounding	-
+B (S23-7) - PWR GND (S23-12)	R-Y - W-B	Battery	Always	10 to 14 V
RF- SPKR (S23-8) - PWR GND (S23-12)	L - W-B	Sound signal (Front Right)	Audio system is sounding	-
LF- SPKR (S23-9) - PWR GND (S23-12)	R-Y - W-B	Sound signal (Front Left)	Audio system is sounding	-
RR- SPKR (S23-10) - PWR GND (S23-12)	G - W-B	Sound signal (Rear Right)	Audio system is sounding	-
LP- SPKR (S23-11) - PWR GND (S23-12)	LG - W-B	Sound signal (Rear Left)	Audio system is sounding	-
PWR GND (S23-12) - Body ground	W-B - Body ground	Ground	Always	Below 1 V

MULTI-DISPLAY CONTROLLER (See TERMINALS OF ECU )