TERMINALS OF ECU
TERMINAL INSPECTION
*a |
Component without harness connected (Steering Lock ECU (Steering Lock Actuator or Upper Bracket Assembly)) |
- |
- |
(a) Measure the voltage and resistance according to the value(s) in the table below.
Terminal No. (Symbol) |
Input/Output |
Wiring Color |
Terminal Description |
Condition |
Specified Condition |
Related Data List Item |
---|---|---|---|---|---|---|
F78-1 (GND) - Body ground |
- |
W-B - Body ground |
Ground*1 |
Always |
Below 1 Ω |
- |
F78-3 (IGEI) - F78-1 (GND) |
Input |
P - W-B |
Steering lock motor activation command signal (motor activation command signal sent from certification ECU (smart key ECU assembly)) |
Any door opened when conditions below met, and then steering lock motor activated:
|
Pulse generation (see waveform) |
Smart Key
|
F78-4 (SLP1) - F78-1 (GND) |
Output |
G - W-B |
Steering lock bar position signal (output signal from steering unlock sensor) |
Steering locked → unlocked |
11 to 14 V → Below 1.5 V |
Smart Key
|
F78-5 (LIN) - F78-1 (GND) |
Input/Output |
V - W-B |
LIN communication line |
- |
- |
Smart Key
|
F78-6 (IG2) - F78-1 (GND) |
Input |
B - W-B |
Power source mode signal (IG2 power supply input for entire steering lock actuator or upper bracket assembly)*1 |
Engine switch off → engine switch on (IG) |
Below 1 V → 11 to 14 V |
- |
F78-7 (B) - Body ground |
Input |
L - Body ground |
Power source*1 |
Always |
11 to 14 V |
- |
NOTICE:
There is 1 motor and 2 sensors built into the steering lock actuator or upper bracket assembly.
HINT:
(1) Waveform
*a |
Steering Lock Motor not Operating |
*b |
Steering Lock Motor Operating |
Item |
Content |
---|---|
Tester Connection |
F78-3 (IGEI) - F78-1 (GND) |
Tool Setting |
2 V/DIV., 200 ms./DIV. |
Vehicle Condition |
Steering lock motor not operating → Operating → Not operating |
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Unlock
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