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:
|
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 ...
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