Terminals Of Ecu

WARNING: This page is about a different car, the 2007 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

CHECK POWER STEERING ECU

Fig 1: Identifying Power Steering ECU Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HINT:

Measurements cannot be performed on the C connector side of the power steering ECU.

POWER STEERING ECU TERMINALS WIRING COLOR AND DESCRIPTION CHART

Symbols	Wiring Color	Terminal Description
U	W	U phase motor output
V	B	V phase motor output
W	W-R	W phase motor output

Measure the voltage and resistance of the connectors.

POWER STEERING ECU TERMINALS VOLTAGE AND RESISTANCE SPECIFICATION

Symbols (Terminal No.)	Wiring Color	Terminal Description	Condition	Specified Condition
PIG (A1-1) - PGND (A1-2)	W-B - W-B	Power source	Always	10 to 14 V
IG (E18-5) - PGND (A1-2)	L - W-B	IG power source	Ignition switch ON	10 to 14 V
TRQ1 (e1-6) - TRQG (e1-1)	G - B	Torque sensor signal	Ignition switch ON Steering wheel not turned (without load)	2.3 to 2.7 V
			Ignition switch ON Steering wheel turned to right with vehicle stopped	2.5 to 4.04 V
			Ignition switch ON Steering wheel turned to left with vehicle stopped	0.95 to 2.5 V
TRQ2 (e1-2) - TRQG (e1-1)	Y - B	Torque sensor signal	Ignition switch ON Steering wheel not turned (without load)	2.3 to 2.7 V
			Ignition switch ON Steering wheel turned to right with vehicle stopped	0.95 to 2.5 V
			Ignition switch ON Steering wheel turned to left with vehicle stopped	2.5 to 4.04 V
TRQF (e1-4) - TRQG (e1-1)	W - B	Torque sensor reference voltage	Ignition switch ON	3.35 to 3.37 V
TRQV (e1-3) - TRQG (e1-1)	R - B	Torque sensor voltage source	Ignition switch ON	8.5 to 10.5 V
TRQG (e1-1) - Body ground	B - Body ground	Torque sensor ground	Always	Below 1 Ω
PGND (A1-2) - Body ground	W-B - Body ground	Power ground	Always	Below 1 Ω
C1 (e2-1) - PGND (A1-2)	R - W-B	Resolver signal	Ignition switch ON Steering wheel is turned	0.68 to 4.42 V
C2 (e2-5) - PGND (A1-2)	L - W-B	Resolver signal	Ignition switch ON Steering wheel is turned	0.68 to 4.42 V
S1 (e2-2) - PGND (A1-2)	B - W-B	Resolver signal	Ignition switch ON Steering wheel is turned	0.68 to 4.42 V
S2 (e2-6) - PGND (A1-2)	Y - W-B	Resolver signal	Ignition switch ON Steering wheel is turned	0.68 to 4.42 V
R1 (e2-4) - PGND (A1-2)	W - W-B	Resolver excitation signal	Ignition switch ON Steering wheel is turned	2.9 to 5.1 V
R2 (e2-8) - PGND (A1-2)	G - W-B	Resolver excitation signal	Ignition switch ON Steering wheel is turned	2.9 to 5.1 V
CANH (E18-2) - CANL (E18-8)	Y - W	CAN communication line	Ignition switch OFF	54 to 67 Ω

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