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 |
Toyota CH-R Service Manual > Automatic Headlight Beam Level Control System: Initialization has not been Performed (B2450)
DESCRIPTION
The headlight ECU sub-assembly LH stores this DTC if initialization has not been
performed after the ECU was replaced.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
Note
B2450
Initializat ...
Toyota CH-R Service Manual > Lighting System: High Beam Headlight Circuit
DESCRIPTION
The main body ECU (multiplex network body ECU) controls the high beam headlights.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuse for circuits related to this system before performing
the following procedure.
Check the operation of the low beam head ...