Power Steering System (For 2Zr-Fe) Terminals Of Ecu

Steering. Corolla. Zre142 Aze141
Power Assist Systems. Corolla. Zre142 Aze141

  1. CHECK POWER STEERING ECU

Power Steering System (For 2Zr-Fe) -- Terminals Of Ecu



CHECK POWER STEERING ECU

Corolla. Zre142 Aze141.Power Assist Systems.Power Steering System (For 2Az-Fe).Power Steering System (For 2Zr-Fe) Terminals Of Ecu

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

    NOTICE:
    1. Check if the power steering ECU connectors are securely connected by pulling on them from the backside.
    2. If the P/S warning light is illuminated due to a malfunction, the fail-safe function may cause the voltage of the power steering ECU's terminals to become 0 V.

    Terminals No. (Symbol)
    		Wiring Color
    		Terminal Description
    		Condition
    		Specified Condition
    A75-1 (PIG) - Body ground
    		L - Body ground
    		Power steering motor power supply input signal
    		Always
    		11 to 14 V
    A75-2 (PGND) - Body ground
    		W-B - Body ground
    		Power ground
    		Always
    		Below 1 Ω
    a2-1 (M1) - Body ground
    		R - Body ground
    		Power steering motor output signal 1
    		Ignition switch on (IG), steering wheel turned to left
    		11 to 14 V
    Ignition switch on (IG), steering wheel turned to right
    		Below 1 V
    a2-2 (M2) - Body ground
    		B - Body ground
    		Power steering motor output signal 2
    		Ignition switch on (IG), steering wheel turned to left
    		Below 1 V
    Ignition switch on (IG), steering wheel turned to right
    		11 to 14 V
    E32-1 (CANH) - E32-7 (CANL)
    		SB - W
    		CAN communication line
    (CAN HI signal)
    		Ignition switch off
    		54 to 69 Ω
    E32-6 (IG) - Body ground
    		L - Body ground
    		IG power source
    		Ignition switch on (IG)
    		11 to 14 V
    E32-7 (CANL) - E32-1 (CANH)
    		W - SB
    		CAN communication line
    (CAN LO signal)
    		Ignition switch off
    		54 to 69 Ω
    a3-5 (TRQ1) - Body ground
    		W - Body ground
    		Torque sensor 1 input signal
    		Ignition switch on (IG), steering wheel is not turned (without load)
    		2.3 to 2.7 V
    Ignition switch on (IG), steering wheel is turned to right
    		2.5 to 3.8 V
    Ignition switch on (IG), steering wheel is turned to left
    		1.2 to 2.5 V
    a3-6 (TRQV) - Body ground
    		R - Body ground
    		Torque sensor power source
    		Ignition switch on (IG)
    		4.5 to 5.5 V
    a3-7 (TRQ2) - Body ground
    		Y - Body ground
    		Torque sensor 2 input signal
    		Ignition switch on (IG), steering wheel is not turned (without load)
    		2.3 to 2.7 V
    Ignition switch on (IG), steering wheel is turned to right
    		1.2 to 2.5 V
    Ignition switch on (IG), steering wheel is turned to left
    		2.5 to 3.8 V
    a3-8 (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.