Toyota 4Runner manuals

Toyota 4Runner: Terminals Of Ecu

TERMINALS OF ECU

1. CHECK STEERING LOCK ECU


(a) Disconnect the F68 steering lock ECU connector.

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

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

F68-1 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

F68-6 (IG2) - F68-1 (GND)

W - W-B

IG2 signal input

Engine switch off → engine switch on (IG)

Below 1 V → 11 to 14 V

F68-7 (B) - F68-1 (GND)

GR - W-B

Power source

Always

11 to 14 V

If the result is not as specified, there may be a malfunction on the wire harness side.

(c) Reconnect the F68 steering lock ECU connector.

(d) Measure the voltage according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

F68-3 (IGE) - F68-1 (GND)

GR - W-B

Power source for motor drive

When all conditions are met:

  • Steering lock unlocked
  • Engine switch off
  • Shift lever in P
  • Driver side door closed → opened

11 to 14 V (Steering lock motor not operating) → Below 1 V (Steering lock motor operating) → 11 to 14 V (Steering lock motor not operating)

F68-4 (SLP1) - F68-1 (GND)

SB - W-B

Unlock position sensor output signal

Steering lock locked → steering lock unlocked

11 to 14 V → Below 1.2 V

If the result is not as specified, there may be a malfunction in the steering lock ECU.

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. DESCRIPTION (a) When troubleshooting a vehicle with a diagnosis system, connect the Techstream to the DLC3 of the vehicle and read various data output from the steering lock ac ...

Other materials about Toyota 4Runner:

Air Mix Damper Control Servo Motor Circuit (Driver Side) (B1446/46)
DESCRIPTION The damper servo sub-assembly (driver side air mix damper servo) sends pulse signals to inform the No. 1 air conditioning amplifier assembly of the damper position. The No. 1 air conditioning amplifier assembly activates the motor (normal or r ...

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 listed in order of probability in the "Suspected Area" column of ...

© 2016-2020 | www.to4runner.net

0.0059