DYNAMIC RADAR CRUISE CONTROL SYSTEM(except 2AR-FE)

CHECK ECM

Tech Tips

The standard voltage, resistance and waveform between each pair of the ECM terminals is shown in the table below. The appropriate conditions for checking each pair of the terminals is also indicated. The result of checks should be compared with the standard voltage, resistance and waveform for each pair of the terminals as displayed in the Specified Condition column. The illustration above can be used as a reference to identify the ECM terminal locations.

Terminal No. (Symbols)	Wiring Color	Terminal Description	Condition	Specified Condition
A24-1 (BATT) - A24-10 (E1)	G - W-B	Battery (for measuring battery voltage and for ECM memory)	Always	11 to 14 V
C59-23 (D) - A24-10 (E1)	R - W-B	D shift position signal	Engine switch on (IG), shift lever in D	11 to 14 V
C59-23 (D) - A24-10 (E1)	R - W-B	D shift position signal	Engine switch on (IG), shift lever not in D	Below 1 V
A24-14 (S) - A24-10 (E1)	GR - W-B	S shift position signal	Engine switch on (IG), shift lever in S	11 to 14 V
A24-14 (S) - A24-10 (E1)	GR - W-B	S shift position signal	Engine switch on (IG), shift lever not in S	Below 1 V
A24-21 (STP) - A24-10 (E1)	SB - W-B	Stop light switch signal	Brake pedal depressed	11 to 14 V
A24-21 (STP) - A24-10 (E1)	SB - W-B	Stop light switch signal	Brake pedal released	Below 1 V
A24-27 (CCS) - A24-28 (ECCS)	R - BE	Steering pad switch circuit	Cruise control switch not pushed	1 MΩ or higher
			Cruise control main switch pushed	Below 2.5 Ω
			+RES switch pushed	235 to 245 Ω
			-SET switch pushed	617 to 643 Ω
			CANCEL switch pushed	1509 to 1571 Ω
A24-22 (ST1-) - A24-10 (E1)	LG - W-B	Stop light switch signal	Engine switch on (IG), brake pedal depressed	Below 1 V
A24-22 (ST1-) - A24-10 (E1)	LG - W-B	Stop light switch signal	Engine switch on (IG), brake pedal released	11 to 14 V
A24-19 (SFTD) - A24-10 (E1)	W - W-B	Down-shift position switch signal	Engine switch on (IG), shift lever in S	11 to 14 V
A24-19 (SFTD) - A24-10 (E1)	W - W-B	Down-shift position switch signal	Engine switch on (IG), shift lever in "-"	Below 1 V
A24-20 (SFTU) - A24-10 (E1)	G - W-B	Up-shift position switch signal	Engine switch on (IG), shift lever in S	11 to 14 V
A24-20 (SFTU) - A24-10 (E1)	G - W-B	Up-shift position switch signal	Engine switch on (IG), shift lever in "+"	Below 1 V

CHECK MILLIMETER WAVE RADAR SENSOR ASSEMBLY

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
A30-1 (SGND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
A30-2 (CA2L) - A30-1 (SGND)	W - W-B	CAN communication signal	Engine switch on (IG)	Pulse generation (See waveform 2)
A30-3 (CA2H) - A30-1 (SGND)	R - W-B	CAN communication signal	Engine switch on (IG)	Pulse generation (See waveform 1)
A30-5 (CA1P) - A30-1 (SGND)	G - W-B	CAN communication signal	Engine switch on (IG)	Pulse generation (See waveform 1)
A30-6 (CA1N) - A30-1 (SGND)	W - W-B	CAN communication signal	Engine switch on (IG)	Pulse generation (See waveform 2)
A30-8 (IGB) - A30-1 (SGND)	R - W-B	Power source	Engine switch on (IG)	11 to 14 V


*a	1 V/DIV.
*b	10 μsec./DIV.

Waveform 1

CAN communication signal

Item	Content
Tester Connection	Between A30-3 (CA2H) and A30-1 (SGND) Between A30-5 (CA1P) and A30-1 (SGND)
Tool Setting	1 V/DIV., 10 μsec./DIV.
Condition	Engine switch on (IG)

Tech Tips

The waveform varies depending on the CAN communication signal.


*a	1 V/DIV.
*b	10 μsec./DIV.

Waveform 2

CAN communication signal

Item	Content
Tester Connection	Between A30-2 (CA2L) and A30-1 (SGND) Between A30-6 (CA1N) and A30-1 (SGND)
Tool Setting	1 V/DIV., 10 μsec./DIV.
Condition	Engine switch on (IG)

Tech Tips

The waveform varies depending on the CAN communication signal.

CHECK FORWARD RECOGNITION CAMERA

Note

DTCs may be output when connectors are disconnected during inspection. Therefore, be sure to clear the DTCs using the GTS once the inspection has been completed.
Do not apply excessive force to the V6 forward recognition camera connector.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
V6-7 (IGB) - V6-10 (GND)	LA-P - LA	Power source	Engine switch on (IG)	11 to 14 V
V6-7 (IGB) - V6-10 (GND)	LA-P - LA	Power source	Engine switch off	Below 1 V
V6-5 (CA1P) - V6-10 (GND)	L - LA	CAN communication signal	Engine switch on (IG)	Pulse generation (See waveform 1)
V6-11 (CA1N) - V6-10 (GND)	W - LA	CAN communication signal	Engine switch on (IG)	Pulse generation (See waveform 2)
V6-6 (CANH) - V6-10 (GND)	G - LA	CAN communication signal	Engine switch on (IG)	Pulse generation (See waveform 1)
V6-12 (CANL) - V6-10 (GND)	W - LA	CAN communication signal	Engine switch on (IG)	Pulse generation (See waveform 2)
V6-3 (LKSW) - V6-10 (GND)	V - LA	Vehicle-to-vehicle distance control switch signal	Engine switch on (IG), vehicle-to-vehicle distance control switch not pushed	4.75 to 5.25 V
V6-3 (LKSW) - V6-10 (GND)	V - LA	Vehicle-to-vehicle distance control switch signal	Engine switch on (IG), vehicle-to-vehicle distance control switch pushed	Below 1 V
V6-10 (GND) - Body ground	LA - Body ground	Ground	Always	Below 1 Ω


*a	1 V/DIV.
*b	10 μsec./DIV.

Waveform 1

CAN communication signal

Item	Content
Tester Connection	Between V6-5 (CA1P) and V6-10 (GND) Between V6-6 (CANH) and V6-10 (GND)
Tool Setting	1 V/DIV., 10 μsec./DIV.
Condition	Engine switch on (IG)

Tech Tips

The waveform varies depending on the CAN communication signal.


*a	1 V/DIV.
*b	10 μsec./DIV.

Waveform 2

CAN communication signal

Item	Content
Tester Connection	Between V6-11 (CA1N) and V6-10 (GND) Between V6-12 (CANL) and V6-10 (GND)
Tool Setting	1 V/DIV., 10 μsec./DIV.
Condition	Engine switch on (IG)

Tech Tips

The waveform varies depending on the CAN communication signal.

DYNAMIC RADAR CRUISE CONTROL SYSTEM(except 2AR-FE) TERMINALS OF ECU