Terminals Of Ecu

TRANSMISSION CONTROL ECU ASSY

HINT:

Inspect the connectors from the back side while the connector is connected.

Fig 1: Identifying ECU Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

ECU TERMINALS CONDITION

Terminal No. (Symbols)	Wiring color	Terminal description	Condition	Specified value
T4-1 - T4-15 (+B - E1)	L - W-B	Power source	Power switch on (IG)	9 to 14 V
T4-2 (E02) - Body ground	W-B - Body ground	Ground	Always	Below 1 V
T4-3 (E01) - Body ground	W-B - Body ground	Ground	Always	Below 1 V
T4-4 -T4-16 (RZ1 - E2)	L - P	Rotation angle sensor signal	Power switch on (IG)	4 to 5.5 V
T4-5 - T4-16 (RB - E2)	GR - P	Rotation angle sensor signal	Power switch on (IG)	4 to 5.5 V
T4-6 - T4-16 (RA - E2)	LG - P	Rotation angle sensor signal	Power switch on (IG)	4 to 5.5 V
T4-7 -T4-15 (PCON - E1)	LG - W-B	Communication Bus	Power switch on (IG)	Pulse generation(see waveform 1)
T4-8 - T4-15 (PPOS - E1)	W - W-B	Communication Bus	Power switch on (IG)	Pulse generation (see wave form 2)
T4-9 - T4-15 (IND - E1)	R - W-B	P position switch indicator light	P position switch on	Below 1 V
T4-10 - T4-15 (MWA - E1)	W - W-B	Parking lock motor	Power switch on (IG)	9 to 14 V
T4-11 - T4-15 (MVA - E1)	R - W-B	Parking lock motor	Power switch on (IG)	9 to 14 V
T4-12 - T4-15 (MUA - E1)	B - W-B	Parking lock motor	Power switch on (IG)	9 to 14 V
T4-13 - T4-15 (BATT - E1)	L - W-B	Power source (RAM)	Always	9 to 14 V
T4-14 - T4-15 (BMA - E1)	B - W-B	P CON relay	Power switch on (IG)	9 to 14 V
T4-15 (E1) - Body ground	W-B - Body ground	Ground	Always	Below 1 V
T4-16 (E2) - Body ground	P - Body ground	Ground	Always	Below 1 V
T4-17 - T4-16 (VC - E2)	O - P	Power source(Rotation angle sensor)	Power switch on (IG)	4.5 to 5.5 V
T4-18 - T4-15 (MPX2 - E1)	B - W-B	Multiplex communication	Power switch off Power switch on (IG)	Below 1 V Pulse generation
T4-19 - T4-15 (MPX1 - E1)	GR - W-B	Multiplex communication	Power switch off Power switch on (IG)	Below 1 V Pulse generation
T4-20 -T4-15 (SIL - E1)	W - W-B	Diagnosis tester communication	Power switch on (IG)	8 V or higher

Fig 2: Wave Form 1 Graph (GND)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Wave form 1

WAVE FORM 1

Item	Content
Measure terminal	PCON - E1
Measure set	5V/DIV, 20 ms/DIV
Condition	Power switch on (IG)

Fig 3: Wave Form 2 Graph (GND)

Wave form 2

WAVE FORM 2

Item	Content
Measure terminal	PPOS - E1
Measure set	5V/DIV, 20 ms/DIV
Condition	Power switch on (IG)