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.

Problem Symptoms Table

PROBLEM SYMPTOMS TABLE HINT: Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are lis ...

Diagnosis System

DIAGNOSIS SYSTEM 1. CHECK DLC3 (a) Check the DLC3 (See page ). 2. FUNCTION OF P/S WARNING LIGHT (a) When a malfunction is detected in the power steering system, the P/S warning light on the acc ...

Other materials about Toyota Venza:

Sound Signal Circuit between Radio Receiver and Stereo Jack Adapter
DESCRIPTION The No. 1 stereo jack adapter assembly sends the sound signal from an external device to the radio and display receiver assembly via this circuit. The sound signal that has been sent is amplified by the radio and display receiver ...

Disassembly
DISASSEMBLY PROCEDURE 1. REMOVE INTAKE VALVE (a) Using SST and wooden blocks, compress the compression spring and remove the valve spring retainer locks. SST: 09202-70020 09202-00010 (b) R ...

Throttle / Pedal Position Sensor / Switch "D" Circuit (P2120,P2122,P2123,P2125,P2127,P2128,P2138)
DESCRIPTION HINT: This Electronic Throttle Control System (ETCS) does not use a throttle cable. These DTCs relate to the accelerator pedal sensor assembly. The accelerator pedal sensor assembly is mounted on the accelerator pedal brack ...