Terminals Of Ecu

CHECK ECU

Fig 1: Identifying Terminals OF ECU

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

ECU

Symbols (Terminals No.)	Wiring Color	Condition	STD Voltage (V)
+B <-> GND (C16-2 <-> C16-16)	B-W <-> W-B	Ignition switch ON	10 to 16
STP- <-> GND (C16-3 <-> C16-16)	G-W <-> W-B	Depress brake pedal	10 to 16
STP- <-> GND (C16-3 <-> C16-16)	G-W <-> W-B	Release brake pedal	Below 1
D <-> GND (C16-4 <-> C16-16)	L <-> W-B	Depress clutch pedal (M/T) Shift to except D position (A/T)	Below 1
D <-> GND (C16-4 <-> C16-16)	L <-> W-B	Release clutch pedal (M/T) Shift to D position (A/T)	10 to 16
PI <-> GND (C16-5 <-> C16-16)	G-R <-> W-B	Ignition switch ON Cruise control main switch button ON	Below 1.2
PI <-> GND (C16-5 <-> C16-16)	G-R <-> W-B	Ignition switch ON Cruise control main switch button OFF	10 to 16
ECT (A/T) <-> GND (C16-6 <-> C16-16)	L <-> W-B	During driving Gear position 3rd	Below 1
ECT (A/T) <-> GND (C16-6 <-> C16-16)	L <-> W-B	During driving Gear position O/D	8 to 16
MC <-> GND (C16-7 <-> C16-16)	R-L <-> W-B	During cruise control driving COAST switch held ON	9 to 15
MC <-> GND (C16-7 <-> C16-16)	R-L <-> W-B	During cruise control driving ACC switch held ON	Below 1
L <-> GND (C16-8 <-> C16-16)	G-O <-> W-B	During cruise control driving	9 to 15
L <-> GND (C16-8 <-> C16-16)	G-O <-> W-B	Except during cruise control driving	Below 1
Tc <-> GND (C16-10 <-> C16-16)	P-B <-> W-B	Ignition switch ON	10 to 16
Tc <-> GND (C16-10 <-> C16-16)	P-B <-> W-B	Ignition switch ON Connect terminals Tc and CG of DLC3	Below 2
CCS <-> GND (C16-11 <-> C16-16)	G-Y <-> W-B	Ignition switch ON	10 to 16
		Ignition switch ON Cruise control main switch button held ON	Below 0.5
		Ignition switch ON CANCEL switch held ON	6.6 to 11.4
		Ignition switch ON SET/COAST switch held ON	4.5 - 8.1
		Ignition switch ON RES/ACC switch held ON	2.3 to 4.5
SPD <-> GND (C16-12 <-> C16-16)	V-W <-> W-B	Engine start <-> Car stoppage.	Below 1.5 -> 4.7 to 16
SPD <-> GND (C16-12 <-> C16-16)	V-W <-> W-B	During driving (Pulse generated).	3 to 7
IDL <-> GND (C16-13 <-> C16-16)	L-W <-> W-B	Ignition switch ON Throttle valve fully opened.	10 to 16
IDL <-> GND (C16-13 <-> C16-16)	L-W <-> W-B	Ignition switch ON Throttle valve fully closed.	Below 1.5
OD (A/T) <-> GND (C16-14 <-> C16-16)	R-Y <-> W-B	During cruise control driving O/D switch ON.	0 to 16 (*1)
OD (A/T) <-> GND (C16-14 <-> C16-16)	R-Y <-> W-B	During cruise control driving O/D switch OFF (3rd driving)	Below 1
MO GND (C16-15 <-> C16-16)	R-G <-> W-B	During cruise control driving ACC switch held ON	9 to 15
MO GND (C16-15 <-> C16-16)	R-G <-> W-B	During cruise control driving COAST switch held ON	Below 1
GND <-> Body Ground (C16-16 <- Body Ground)	W-B <-> Body Ground	Constant	Below 1

Oscilloscope wave (*1)
HINT:
- Terminal: OD - GND
- Gauge set: 5 V/DIV, 50 ms/DIV
- Condition: During cruise control driving O/D switch ON.

Fig 2: Identifying Oscilloscope Wave (*1)