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.

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