Toyota Venza: Terminals Of Ecu

Toyota Venza Service Manual / Power Assist Systems / Power Steering System / Terminals Of Ecu

TERMINALS OF ECU

1. CHECK POWER STEERING ECU

HINT:

As connector z8 uses a lock lever, each terminal cannot be checked while the connector is still connected to the power steering ECU.

Terminal No. (Symbol)	Wiring Color	Terminal Description
z8-1 (V)	W	V phase motor output
z8-2 (U)	B	U phase motor output
z8-3 (W)	R	W phase motor output

(a) Measure the voltage and resistance according to the value(s) in the table below.

NOTICE:

When the P/S warning light is illuminated during a malfunction, the fail-safe function may cause the voltage of the power steering ECU terminals to become 0 V.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
D19-1 (PIG) - D19-2 (PGND)	R - B	Power source	Always	11 to 14 V
D19-2 (PGND) - Body ground	B - Body ground	Power ground	Always	Below 1 Ω
D20-1 (CANH) - D20-7 (CANL)	BR - W	CAN communication line	Ignition switch off	54 to 69 Ω
D20-6 (IG) - D19-2 (PGND)	GR - B	IG power source	Ignition switch ON	11 to 14 V
z9-1 (RZV) - D19-2 (PGND)	R - B	Rotation angle sensor excitation output signal	Engine running, steering wheel being turned	-2.42 to 2.42 V
z9-3 (RZG) - D19-2 (PGND)	B - B	Rotation angle sensor excitation circuit GND	Always	Below 1 Ω
z9-5 (RZCS) - D19-2 (PGND)	L - B	Rotation angle sensor COS aspect output signal	Engine running, steering wheel being turned	-0.73 to 0.73 V
z9-6 (RZSN) - D19-2 (PGND)	Y - B	Rotation angle sensor SIN aspect output signal	Engine running, steering wheel being turned	-0.73 to 0.73 V
z10-5 (TRQ1) - z10-8 (TRQG)	W - B	Torque sensor signal	Engine running, steering wheel not turned (without load)	2.3 to 2.7 V
			Engine running, steering wheel turned to right with vehicle stopped	2.5 to 3.8 V
			Engine running, steering wheel turned to left with vehicle stopped	1.2 to 2.5 V
z10-6 (TRQV) - z10-8 (TRQG)	R - B	Torque sensor voltage source	Ignition switch ON	4.5 to 5.5 V
z10-7 (TRQ2) - z10-8 (TRQG)	Y - B	Torque sensor signal	Engine running, steering wheel not turned (without load)	2.3 to 2.7 V
			Engine running, steering wheel turned to right with vehicle stopped	1.2 to 2.5 V
			Engine running, steering wheel turned to left with vehicle stopped	2.5 to 3.8 V
z10-8 (TRQG) - Body ground	B - Body ground	Torque sensor ground	Always	Below 1 Ω

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

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