Terminals Of Ecu

CHECK DISTANCE CONTROL ECU

Fig 1: ECU Connector Terminal Identification

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
J17-1 (B) - J17-12 (GND)	B - BR	Power source	Engine switch on (IG)	10 to 16 V
J17-8 (CANH) - J17-12 (GND)	GR- BR	CAN communication signal	Engine switch on (IG) and engine stopped	Pulse generation
J17-9 (CANL) - J17-12 (GND)	W - BR	CAN communication signal	Engine switch on (IG) and engine stopped	Pulse generation
J17-10 (SGND) - Body ground	BR - Body ground	Ground	Always	Below 1 Ω
J17-12 (GND) - Body ground	BR - Body ground	Ground	Always	Below 1 Ω
J17-13 (IGB) - J17-12 (GND)	P - BR	Millimeter wave radar sensor power source	Engine switch on (IG)	10 to 16 V
J17-16 (MODE) - J17-12 (GND)	R - BR	Steering pad switch signal (Distance control switch signal)	Engine switch on (IG), distance control switch on	0 to 2 V
J17-16 (MODE) - J17-12 (GND)	R - BR	Steering pad switch signal (Distance control switch signal)	Engine switch on (IG), distance control switch off	10 to 16 V
J17-22 (LRDD) - J17-10 (SGND)	BE - BR	Millimeter wave radar sensor input signal	Engine switch on (IG)	Pulse generation (see waveform 1)
J17-23 (LRRD) - J17-10 (SGND)	L - BR	Millimeter wave radar sensor output signal	Engine switch on (IG)	Pulse generation (see waveform 2)

WAVEFORM 1

Fig 2: Waveform 1

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Millimeter wave radar sensor input signal

ECM Terminal Name	Between LRDD - SGND
Tester Range	2 V/DIV, 10 msec./DIV.
Condition	Engine switch on (IG)

WAVEFORM 2

Fig 3: Identifying Waveform 2

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Millimeter wave radar sensor output signal

ECM Terminal Name	Between LRRD - SGND
Tester Range	2 V/DIV., 10 msec./DIV.
Condition	Engine switch on (IG)

CHECK ECM

Fig 4: ECM Connector Terminal Identification

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
A5-8 (ST1-) - E4-7 (E1)	G-W - BR	Stop light signal	Engine switch on (IG), Brake pedal depressed (Stop light switch on)	Below 1 V
A5-8 (ST1-) - E4-7 (E1)	G-W - BR	Stop light signal	Engine switch on (IG), Brake pedal released (Stop light switch off)	11 to 14 V
A6-4 (STP) - E4-7 (E1)	R-B - BR	Stop light signal	Brake pedal released (Stop light switch off)	Below 1 V
A6-4 (STP) - E4-7 (E1)	R-B - BR	Stop light signal	Brake pedal depressed (Stop light switch on)	11 to 14 V
A5-9 (LGND)*1 - Body ground	B - Body ground	Ground	Always	Below 1 V
A5-29 (LGND)*2 - Body ground	B - Body ground	Ground	Always	Below 1 V
A5-20 (CCHG) - E4-7 (E1)	B - BR	Cruise control main switch MODE signal	Engine switch on (IG), Cruise control main switch on, MODE switch on	Below 1 V
A5-20 (CCHG) - E4-7 (E1)	B - BR	Cruise control main switch MODE signal	Engine switch on (IG), Cruise control main switch on, MODE switch off	11 to 14 V
A6-31 (CCS) - E4-7 (E1)	B-L - BR	Cruise control main switch signal	Engine switch on (IG)	11 to 14 V
A6-31 (CCS) - E4-7 (E1)	B-L - BR	Cruise control main switch signal	CANCEL switch on	6.6 to 10.1 V
A6-31 (CCS) - E4-7 (E1)	B-L - BR	Cruise control main switch signal	-SET switch on	4.5 to 7.1 V
A6-31 (CCS) - E4-7 (E1)	B-L - BR	Cruise control main switch signal	+RES switch on	2.3 to 4.0 V
A6-31 (CCS) - E4-7 (E1)	B-L - BR	Cruise control main switch signal	Main switch on	Below 1 V
E4-9 (D) - E4-7 (E1)	R-W - BR1 BR-BR2	Shift lever position signal	Engine switch on (IG), shift lever in D	11 to 14 V
E4-9 (D) - E4-7 (E1)	R-W - BR1 BR-BR2	Shift lever position signal	Engine switch on (IG), shift lever not in D	Below 1 V
A5-24 (CANL) - E4-7 (E1)	W - BR	CAN communication signal	Engine switch on (IG), engine stopped	Pulse generation
A5-25 (CANH) - E4-7 (E1)	B - BR	CAN communication signal	Engine switch on (IG), engine stopped	Pulse generation
E4-7 (E1) - Body ground	BR - Body ground	Ground	Always	Below 1 V

*1: for 2GR-FSE
*2: for 4GR-FSE

If the value is not within the specified range, the ECM may have a malfunction.