Terminals Of Ecu

WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DISPLAY AND NAVIGATION ASSEMBLY*1, (MULTI-DISPLAYS)

HINT:

*1 w/ Navigation system for HDD.
*2 w/ Navigation system for DVD or w/o Navigation system (w/ Multi-display).

Fig 1: Identifying ECU Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Disconnect the L59 display connector.

Measure the resistance and voltage according to the value(s) in the table below.

TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

Terminal No. (Symbols.)	Wiring Color	Terminal Description	Condition	Specified Condition
L59-1 (+B1) - L59-10 (GND1)	R - W-B	Battery	Always	11 to 14 V
L59-2 (ACC) - L59-10 (GND1)	LG - W-B	Accessory (ON)	Power switch OFF	Below 1 V
L59-2 (ACC) - L59-10 (GND1)	LG - W-B	Accessory (ON)	Power switch ON (ACC)	11 to 14 V
L59-3 (IG) - L59-10 (GND1)	V - W-B	Ignition (ON)	Power switch OFF	Below 1 V
L59-3 (IG) - L59-10 (GND1)	V - W-B	Ignition (ON)	Power switch ON (IG)	11 to 14 V
L59-10 (GND1) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω

If the result is not as specified, there may be a malfunction on the wire harness side.

Reconnect the L59 display connector.

Measure the voltage according to the value(s) in the table below.

TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Specified Condition
L59-7 (TC) - L59-10 (GND1)	P - W-B	Diagnosis ON signal	Power switch ON (IG)	9 to 14 V
L59-5 (HILL) - L59-10 (GND1)	LG - W-B	Illumination signal	Light control switch OFF	Below 1 V
L59-5 (HILL) - L59-10 (GND1)	LG - W-B	Illumination signal	Light control switch ON	11 to 14 V
L59-12 (ILL+) - L59-10 (GND1)	G - W-B	Illumination signal	Light control switch OFF	Below 1 V
L59-12 (ILL+) - L59-10 (GND1)	G - W-B	Illumination signal	Light control switch ON	11 to 14V
L59-13 (REV) - L59-10 (GND1)	R - W-B	Reverse signal	See "Vehicle Signal Check" Mode	-
L59-14 (SPD) - L59-10 (GND1)	V - W-B	Speed signal from combination meter	See "Vehicle Signal Check" Mode	-
L59-22 (DR) - L59-10 (GND1)	G - W-B	Dimmer signal	Power switch ON, light control switch TAIL or ON and cover the automatic light control sensor	9 V or higher
L59-23 (PKB) - L59-10 (GND1)	V - W-B	Parking brake signal	See "Vehicle Signal Check" Mode	-
L60-5 (TSW-) - L59-10 (GND1)	BR - W-B	Telephone relation switch signal	Always	Below 1 V
L60-9 (MACC) - L59-10 (GND1)	R - W-B	Microphone amplifier power supply	Power switch OFF	Below 1 V
L60-9 (MACC) - L59-10 (GND1)	R - W-B	Microphone amplifier power supply	Power switch ON (IG)	5V
L60-10 (MIN-) - L59-10 (GND1)	BR - W-B	Microphone voice signal	See "Microphone & Voice Recognition Check"	-
L60-11 (MIN+) - L59-10 (GND1)	Y - W-B	Microphone voice signal	See "Microphone & Voice Recognition Check"	-
L60-12 (SGND) - Body ground	BR - Body ground	Ground	Always	Below 1 V
L60-21 (IVO-) - L59-10 (GND1)	R - W-B	Voice guidance signal	Voice guidance is provided	Waveform synchronized with sounds is output
L60-22 (IVO+) - L59-10 (GND1)	G - W-B	Voice guidance signal	Voice guidance is provided	Waveform synchronized with sounds is output
L60-23 (SLD) - L59-10 (GND1)	Shielded - W-B	Shielded ground	Always	Below 1 V
L61-1 (W+) - L59-10 (GND1)	W - W-B	DVD image signal	DVD is played on radio receiver	Pulse generation (refer to waveform 2)
L61-4 (W-) - L59-10 (GND1)	B - W-B	Signal ground	Always	Below 1 V
L60-13 (CA+) - L59-10 (GND1)	B - W-B	Television camera power supply	Power switch ON (IG), shift lever reverse position	5 5 to 7 05 V
L60-14 (CGND) - Body ground	R - Body ground	Ground	Always	Below 1 V
L60-27 (V+) - L60-14 (CGND)	W-R	Television camera image signal	Power switch ON (IG), shift lever reverse position	Pulse generation (refer to waveform 1)
L60-28 (V-) - L60-14 (CGND)	Shielded - R	Shielded ground	Always	Below 1 V
L62-8 (MUTE) - L59-10 (GND1)*1	R - W-B	Mute signal	RSE system is playing → changing modes	3 5 V or higher → Below 1 V
L62-7 (MUT2) - L59-10 (GND1)1, 2	L - W-B	Mute signal	RSE system is playing → changing modes	3 5 V or higher → Below 1 V
L62-4 (FL-) - L59-10 (GND1)*1	W - W-B	Sound signal (Input)	RSE system is playing	A waveform synchronized with sound is output
L62-3 (FL+) - L59-10 (GND1)*1	B - W-B	Sound signal (Input)	RSE system is playing	A waveform synchronized with sound is output
L62-2 (FR-) - L59-10 (GND1)*1	G - W-B	Sound signal (Input)	RSE system is playing	A waveform synchronized with sound is output
L62-1 (FR+) - L59-10 (GND1)*1	R - W-B	Sound signal (Input)	RSE system is playing	A waveform synchronized with sound is output
L62-5 (SLD1) - Body ground*1	Shielded - Body ground	Ground	Always	Below 1 V
L62-9 (RL-) - L59-10 (GND1)1, 2	G - W-B	Sound signal (Output)	RSE system is playing	A waveform synchronized with sound is output
L62-10 (RL+) - L59-10 (GND1)1, 2	R - W-B	Sound signal (Output)	RSE system is playing	A waveform synchronized with sound is output
L62-11 (RR-) - L59-10 (GND1)1, 2	W - W-B	Sound signal (Output)	RSE system is playing	A waveform synchronized with sound is output
L62-12 (RR+) - L59-10 (GND1)1, 2	B - W-B	Sound signal (Output)	RSE system is playing	A waveform synchronized with sound is output
L62-13 (SGD2) - Body ground1, 2	Shielded - Body ground	Ground	Always	Below 1 V
L105-1 (GVIF) - L59-10 (GND1)*3	B - W-B	Digital image signal	DVD is played on radio receiver	-
L106-1 (GVIF) - L59-10 (GND1)*2	B - W-B	Digital image signal	DVD is played on radio receiver	-
HINT: 1: w/ Navigation system for HDD 2: w/ Rear Seat Entertainment System *3: w/o Rear Seat Entertainment System

If the result is not as specified, the multi-display may have a malfunction

CHECK RADIO RECEIVER

Fig 2: Identifying Radio Receiver Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Disconnect the L51 receiver connector.

Measure the resistance and voltage according to the value(s) in the table below.

TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Specification
L51-1 (B) - L51-20 (GND)	L - W-B	Battery	Always	11 to 14 V
L51-20 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
L51-11 (ACC) - L51-20 (GND)	LG - W-B	Accessory (ON)	Power switch OFF	Below 1 V
L51-11 (ACC) - L51-20 (GND)	LG - W-B	Accessory (ON)	Power switch ON (ACC)	11 to 14 V

If the result is not as specified, there may be a malfunction on the wire harness side.

Reconnect the L51 receiver connector.

Measure the resistance and voltage according to the value(s) in the table below.

TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Specification
L51-2 (ILL+) - L51-20 (GND)	G - W-B	Illumination signal	Power switch ON (IG), light control switch OFF	Below 1 V
L51-2 (ILL+) - L51-20 (GND)	G - W-B	Illumination signal	Power switch ON (IG), light control switch TAIL or ON	11 to 14 V
L51-7 (MUTE) - L51-20 (GND)	V - W-B	Mute signal	Audio system is playing → changing modes	3.5 V or higher → Below 1 V
L51-8 (R+) - L51-20 (GND)	W - W-B	Sound signal (right)	Audio system is playing	Waveform synchronized with sound is output
L51-9 (L+) - L51-20 (GND)	R - W-B	Sound signal (left)	Audio system is playing	Waveform synchronized with sound is output
L51-18 (R-) - L51-20 (GND)	G - W-B	Sound signal (right)	Audio system is playing	Waveform synchronized with sound is output
L51-19 (L-) - L51-20 (GND)	B - W-B	Sound signal (left)	Audio system is playing	Waveform synchronized with sound is output
L51-10 (SLD) - L51-20 (GND)	Shielded - W-B	Shielded ground	Always	Below 1 V
L53-5 (CDL-) - L51-20 (GND)*	W - W-B	Sound signal (left)	RSE system is playing	Waveform synchronized with sound is output
L53-4 (CDL+) - L51-20 (GND)*	R - W-B	Sound signal (left)	RSE system is playing	Waveform synchronized with sound is output
L53-3 (CDR-) - L51-20 (GND)*	G - W-B	Sound signal (right)	RSE system is playing	Waveform synchronized with sound is output
L53-2 (CDR+) - L51-20 (GND)*	B - W-B	Sound signal (right)	RSE system is playing	Waveform synchronized with sound is output
L53-1 (CSLD) - Body ground*	Shielded - Body ground	Ground	Always	Below 1 V
L53-6 (MUTE) - L51-20 (GND)*	Y - W-B	Mute signal	RSE system is playing → changing modes	3 5 V or higher → Below 1 V
L52-18 (R-L-) - L51-20 (GND)*	W - W-B	Sound signal (left)	RSE system is playing	Waveform synchronized with sound is output
L52-17 (R-L+) - L51-20 (GND)*	R - W-B	Sound signal (left)	RSE system is playing	Waveform synchronized with sound is output
L52-16 (R-R-) - L51-20 (GND)*	G - W-B	Sound signal (right)	RSE system is playing	Waveform synchronized with sound is output
L52-15 (R-R+) - L51-20 (GND)*	B - W-B	Sound signal (right)	RSE system is playing	Waveform synchronized with sound is output
L52-14 (RSLD) - Body ground*	Shielded - Body ground	Ground	Always	Below 1 V
L52-19 (RMUT) - L51-20 (GND)*	Y - W-B	Mute signal	RSE system is playing → changing modes	3 5 V or higher → Below 1 V
L56-7 (SLD2) - Body ground*	Shielded - Body ground	Ground	Always	Below 1 Ω
L56-6 (SGD4) - L51-20 (GND)*	W - W-B	Ground	Always	Below 1 Ω
L56-5 (NTRO) - L51-20 (GND)*	B - W-B	Display signal	DVD image is playing	Pulse generation
L51-12 (ILL-) - L51-20 (GND)	LG - W-B	Illumination signal	Power switch OFF	Below 1 V
L51-12 (ILL-) - L51-20 (GND)	LG - W-B	Illumination signal	Power switch ON (IG)	Pulse generation
L52-9 (TX+) - L51-20 (GND)	LG - W-B	AVC-LAN communication signal	Power switch ON (ACC)	2 to 3 V
L52-10 (TX-) - L51-20 (GND)	L - W-B	AVC-LAN communication signal	Power switch ON (ACC)	2 to 3 V
L53-9 (TXM+) - L51-20 (GND)	Y - W-B	AVC-LAN communication signal	Power switch ON (ACC)	2 to 3 V
L53-10 (TXM-) - L51-20 (GND)	BR - W-B	AVC-LAN communication signal	Power switch ON (ACC)	2 to 3 V
L51-5 (ATX+) - L51-20 (GND)	B - W-B	AVC-LAN communication signal	Power switch ON (ACC)	2 to 3 V
L51-15 (ATX-) - L51-20 (GND)	Y - W-B	AVC-LAN communication signal	Power switch ON (ACC)	2 to 3 V
L51-13 (ANT) - L51-20 (GND)	B - W-B	Power source of antenna	Radio switch is ON and AM or FM	11 to 14 V
L52-6 (SWG) - L51-20 (GND)	B - W-B	Steering pad switch ground	Always	Below 1 V
L52-7 (SW1) - L51-20 (GND)	BR - W-B	Steering pad switch signal	Steering pad switch not pushed	4 V or higher
L52-7 (SW1) - L51-20 (GND)	BR - W-B	Steering pad switch signal	Steering pad switch SEEK+ switch pushed	Below 0 5 V
L52-7 (SW1) - L51-20 (GND)	BR - W-B	Steering pad switch signal	Steering pad switch SEEK- switch pushed	0 8 V
L52-7 (SW1) - L51-20 (GND)	BR - W-B	Steering pad switch signal	Steering pad switch Vol+ switch pushed	1 8 V
L52-7 (SW1) - L51-20 (GND)	BR - W-B	Steering pad switch signal	Steering pad switch Vol-switch pushed	3 0 V
L52-8 (SW2) - L51-20 (GND)	G - W-B	Steering pad switch signal	Steering pad switch not pushed	4 V or higher
L52-8 (SW2) - L51-20 (GND)	G - W-B	Steering pad switch signal	Steering pad switch MODE switch pushed	Below 0 5 V
L52-8 (SW2) - L51-20 (GND)	G - W-B	Steering pad switch signal	Steering pad switch ON Hook switch pushed	0 9 V
L52-8 (SW2) - L51-20 (GND)	G - W-B	Steering pad switch signal	Steering pad switch OFF Hook switch pushed	1 5 V
L52-8 (SW2) - L51-20 (GND)	G - W-B	Steering pad switch signal	Steering pad switch Voice Recognition switch pushed	3 0 V
L56-1 (NTSC) - L51-20 (GND)	W - W-B	DVD image signal	DVD played	Pulse generation (see waveform e 1)
L56-2 (GND) - L51-20 (GND)	B - W-B	Ground	Always	Below 1 V
L56-3 (SLD) - L51-20 (GND)	Shielded - W-B	Shielded ground	Always	Below 1 V
L55-2 (ARI) - L51-20 (GND)	W - W-B	Sound signal (Right)	External device is playing (When stereo jack is used)	A waveform synchronized with sounds is output
L55-5 (ASGN) - L51-20 (GND)	Shielded - Body ground	Shield ground	Always	Below 1 V
L55-3 (ALI) - L51-20 (GND)	B - W-B	Sound signal (Left)	External device is playing (When stereo jack is used)	A waveform synchronized with sounds is output
L55-6 (AUXI) - L51-20 (GND)	BR - W-B	External device connection detection signal	External device is connection	Below 1 V
U1-1 (DVD) - 151-20 (GND)	# - W-B	Digital image signal	DVD is played on radio receiver	-
HINT * w/ Rear Seat Entertainment System # There is no wire color information.

If the result is not as specified, the receiver may have a malfunction

Using an oscilloscope, check the waveform

Waveform 1 (reference)

WAVEFORM 1 REFERENCE

Item	Content
Terminal No (Symbols)	L56-1 (NTSC) - Body ground
Tool Setting	200 mV/DIV, 10 μs/DIV
Condition	DVD displayed on multi-display

Fig 3: Identifying Signal Waveform

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

CHECK STEREO COMPONENT AMPLIFIER

Fig 4: Identifying Stereo Component Amplifier Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Disconnect the R34 and R38 amplifier connectors.

Measure the resistance and voltage according to the value(s) in the table below.

TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Specified Condition
R38-2 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
R38-6 (GND2) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
R38-1 (+B) - R38-2 (GND)	B - W-B	Battery	Always	11 to 14 V
R38-3 (+B2) - R38-2 (GND)	B - W-B	Battery	Always	11 to 14 V
R34-12 (ACC) - R38-2 (GND)	L - W-B	Accessory (ON)	Power switch OFF	Below 1 V
R34-12 (ACC) - R38-2 (GND)	L - W-B	Accessory (ON)	Power switch ON (ACC)	11 to 14 V

If the result is not as specified, there may be a malfunction on the wire harness.

Reconnect the R34 and R38 amplifier connectors.

Measure the voltage according to the value(s) in the table below

TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Specified Condition
R39-3 (CTR+) - R38-2 (GND)	P - W-B	Sound signal	Audio system is playing	Waveform synchronized with sound is output
R39-9 (CTR-) - R38-2 (GND)	V - W-B	Sound signal	Audio system is playing	Waveform synchronized with sound is output
R35-2 (FL+) - R38-2 (GND)	L - W-B	Sound signal	Audio system is playing	Waveform synchronized with sound is output
R35-6 (FL-) - R38-2 (GND)	LG - W-B	Sound signal	Audio system is playing	Waveform synchronized with sound is output
R35-8 (FR+) - R38-2 (GND)	L - W-B	Sound signal	Audio system is playing	Waveform synchronized with sound is output
R35-7 (FR-) - R38-2 (GND)	LG - W-B	Sound signal	Audio system is playing	Waveform synchronized with sound is output
R39-4 (L+) - R38-2 (GND)	P - W-B	Sound signal	Audio system is playing	Waveform synchronized with sound is output
R39-10 (L-) - R38-2 (GND)	Y - W-B	Sound signal	Audio system is playing	Waveform synchronized with sound is output
R35-1 (R+) - R38-2 (GND)	W - W-B	Sound signal	Audio system is playing	Waveform synchronized with sound is output
R35-5 (R-) - R38-2 (GND)	R - W-B	Sound signal	Audio system is playing	Waveform synchronized with sound is output
R39-1 (WF1+) - R38-2 (GND)	B - W-B	Sound signal	Audio system is playing	Waveform synchronized with sound is output
R39-5 (WF1-) - R38-2 (GND)	Y - W-B	Sound signal	Audio system is playing	Waveform synchronized with sound is output
R39-2 (WF2+) - R38-2 (GND)	W - W-B	Sound signal	Audio system is playing	Waveform synchronized with sound is output
R39-6 (WF2-) - R38-2 (GND)	R - W-B	Sound signal	Audio system is playing	Waveform synchronized with sound is output
R34-15 (II1+) - R38-2 (GND)	G - W-B	Voice guidance signal	Voice guidance is provided	Waveform synchronized with sound is output
R34-14 (II1-) - R38-2 (GND)	R - W-B	Voice guidance signal	Voice guidance is provided	Waveform synchronized with sound is output
R34-11 (SPD) - R38-2 (GND)	V - W-B	Speed signal	Power switch ON (IG), drive wheels are turned slowly	Pulse generation
R34-1 (MUTE) - R38-2 (GND)	V - W-B	Mute signal	Audio system is playing → change mode	3 5 V or higher → Below 1 V
R34-24 (TMUT) - R38-2 (GND)	L - W-B	Mute signal	Audio system is playing → emergency call made	3 5 V or higher → Below 1 V
R34-8 (TX+) - R38-2 (GND)	B - W-B	AVC-LAN communication signal	Power switch ON (ACC)	2 to 3 V
R34-7 (TX-) - R38-2 (GND)	Y - W-B	AVC-LAN communication signal	Power switch ON (ACC)	2 to 3 V
R34-20 (TXD+) - R38-2 (GND)	R - W-B	AVC-LAN communication signal	Power switch ON (ACC)	2 to 3 V
R34-19 (TXD-) - R38-2 (GND)	BR - W-B	AVC-LAN communication signal	Power switch ON (ACC)	2 to 3 V
R34-5 (R+) - R38-2 (GND)	W - W-B	Sound signal (right)	Audio system playing	Waveform synchronized with sound is output
R34-4 (R-) - R38-2 (GND)	G - W-B	Sound signal (right)	Audio system playing	Waveform synchronized with sound is output
R34-3 (L+) - R38-2 (GND)	R - W-B	Sound signal (left)	Audio system playing	Waveform synchronized with sound is output
R34-2 (L-) - R38-2 (GND)	B - W-B	Sound signal (left)	Audio system playing	Waveform synchronized with sound is output
R35-3 (TWL+) - R38-2 (GND)	W - W-B	Sound signal (left)	Audio system playing	Waveform synchronized with sound is output
R35-9 (TWL-) - R38-2 (GND)	R - W-B	Sound signal (left)	Audio system playing	Waveform synchronized with sound is output
R35-4 (TWR+) - R38-2 (GND)	V - W-B	Sound signal (right)	Audio system playing	Waveform synchronized with sound is output
R35-10 (TWR-) - R38-2 (GND)	P - W-B	Sound signal (right)	Audio system playing	Waveform synchronized with sound is output
R34-6 (SLD) - R38-2 (GND)	Shielded - Body ground	Shielded ground	Always	Below 1 V
R36-2 (SL+) - R38-2 (GND)	B - W-B	Sound signal	Audio system is playing	Waveform synchronized with sound is output
R36-7 (SL-) - R38-2 (GND)	Y - W-B	Sound signal	Audio system is playing	Waveform synchronized with sound is output
R36-1 (SR+) - R38-2 (GND)	B - W-B	Sound signal	Audio system is playing	Waveform synchronized with sound is output
R36-6 (SR-) - R38-2 (GND)	Y - W-B	Sound signal	Audio system is playing	Waveform synchronized with sound is output
R36-10 (WFL+) - R38-2 (GND)	Y - W-B	Sound signal	Audio system is playing	Waveform synchronized with sound is output
R36-8 (WFL-) - R38-2 (GND)	B - W-B	Sound signal	Audio system is playing	Waveform synchronized with sound is output
R36-5 (WFR+) - R38-2 (GND)	B - W-B	Sound signal	Audio system is playing	Waveform synchronized with sound is output
R36-11 (WFR-) - R38-2 (GND)	Y - W-B	Sound signal	Audio system is playing	Waveform synchronized with sound is output
t1-1 (DVD) - R38-2 (GND)	# - W-B	Digital image signal	DVD is played on radio receiver	-
HINT # There is no wire color information.

If the result is not as specified, the amplifier may have a malfunction

CHECK REAR POWER SEAT MODULE SWITCH (except Ottoman)

Fig 5: Identifying Rear Power Seat Module Switch Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Disconnect the z54 module connector

Measure the resistance and voltage according to the value(s) in the table below

TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

Terminal No (Symbols)	Wiring Color	Terminal Description	Condition	Specified Condition
z54-3 (E) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
z54-11 (B) - z54-3 (E)	R - W-B	Battery	Always	11 to 14 V

If the result is not as specified, there may be a malfunction on wire harness side.

Reconnect the z54 module connector.

Measure the voltage according to the value(s) in the table below

TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Specified Condition
z54-4 (MPX+) - z54-3 (E)	R - W-B	AVC-LAN communication signal	Power switch ON (ACC)	2 to 3 V
z54-5 (MPX-) - z54-3 (E)	BR - W-B	AVC-LAN communication signal	Power switch ON (ACC)	2 to 3 V

If the result is not as specified, the controller may have a malfunction.

CHECK REAR POWER SEAT MODULE SWITCH (for Ottoman)

Fig 6: Identifying Rear Power Seat Module Switch Connector Terminals

Disconnect the S15 module connector.

Measure the resistance and voltage according to the value(s) in the table below.

TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Specified Condition
S15-5 (E) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
S15-6 (B) - S15-5 (E)	R - W-B	Battery	Always	11 to 14 V

If the result is not as specified, there may be a malfunction on wire harness side.

Reconnect the S15 module connector.

Measure the voltage according to the value(s) in the table below

TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Specified Condition
S15-10 (MPX+) - S15-5 (E)	R - W-B	AVC-LAN communication signal	Power switch ON (ACC)	2 to 3 V
S15-11 (MPX-) - S15-5 (E)	BR - W-B	AVC-LAN communication signal	Power switch ON (ACC)	2 to 3 V

If the result is not as specified, the module may have a malfunction.