Toyota 4Runner: Terminals Of Ecu

Toyota 4Runner Service Manual / Steering / Power Assist Systems / Power Steering System / Terminals Of Ecu

TERMINALS OF ECU

1. CHECK POWER STEERING ECU ASSEMBLY

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

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
F41-3 (GND) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
F41-2 (CANL) - F41-1 (CANH)	W - L	CAN communication	Ignition switch off	54 to 69 Ω
F41-5 (IG) - F41-3 (GND)	G - W-B	IG power supply	Ignition switch ON	11 to 14 V
F41-7 (SOF+) - F41-8 (SOF-)	V - LG	Power steering solenoid valve signal	Engine idling Steering wheel turned to right or left	Pulse generation

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 POWER STEERING WARNING LIGHT (a) When a malfunction is detected in the power steering system, the power steering wa ...

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