Toyota Corolla Cross: Terminals Of Ecu
TERMINALS OF ECU
REAR TELEVISION CAMERA ASSEMBLY
(a) Disconnect the rear television camera assembly connector.
(b) Measure the voltage on the wire harness side connector according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|
|
U48-4 (CB+) - Body ground |
Power source |
Ignition switch ON |
6 to 9 V |
(c) Reconnect the rear television camera assembly connector.
(d) Measure the resistance and check for pulses at each terminal of the connector.
|
Terminal No. (Symbol) |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|
|
U48-1 (CANH) - Body ground |
CAN communication line |
- |
- |
|
U48-2 (CANL) - Body ground |
CAN communication line |
- |
- |
|
U48-3 (CGND) - Body ground |
Camera ground |
Always |
Below 1 Ω |
|
U48-6 (CV+) - U48-5 (CV-) |
Video signal |
Ignition switch ON Shift position in R Camera lens not covered, displaying image |
Pulse generation (Refer to waveform 1) |
|
Ignition switch ON Shift position in R Camera lens covered, blacking out screen |
Pulse generation (Refer to waveform 2) |
||
|
U48-7 (SGND) - Body ground |
Camera ground (shield) |
Always |
Below 1 Ω |
(e) Reference (Oscilloscope waveform):
|
*a |
Waveform 1 (camera lens not covered, displaying image) |
|
*b |
Waveform 2 (camera lens covered, blacking out screen) |
|
*c |
Synchronization Signal |
|
*d |
Video Waveform |
(1) Waveform 1 (camera lens is not covered, displaying an image)
|
Item |
Content |
|---|---|
|
Measurement terminal |
U48-6 (CV+) - U48-5 (CV-) |
|
Measurement setting |
200 mV/DIV., 50 μs./DIV. |
|
Condition |
Ignition switch ON, shift position in R, camera lens not covered, displaying image |
HINT:
- The video waveform changes according to the image sent by the rear television camera assembly.
- The video waveform is constantly output when the ignition switch is ACC.
(2) Waveform 2 (camera lens is covered, blacking out the screen)
|
Item |
Content |
|---|---|
|
Measurement terminal |
U48-6 (CV+) - U48-5 (CV-) |
|
Measurement setting |
200 mV/DIV., 50 μs./DIV. |
|
Condition |
Ignition switch ON, shift position in R, camera lens covered, blacking out screen |
HINT:
- The video waveform changes according to the image sent by the rear television camera assembly.
- The video waveform is constantly output when the ignition switch is ACC.
RADIO AND DISPLAY RECEIVER ASSEMBLY
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READ NEXT:
Diagnosis System
DIAGNOSIS SYSTEM
PARKING ASSIST MONITOR SYSTEM DIAGNOSTIC MODE
(a) In diagnostic mode for the parking assist monitor system, signals
received by the radio and display receiver assembly can be chec
Freeze Frame Data
FREEZE FRAME DATA
HINT:
Freeze frame data is stored at the time when DTCs are detected.
When freeze frame data at the time it is stored that a DTC is detected,
data is not updated or clear
Data List / Active Test
DATA LIST / ACTIVE TEST
DATA LIST
NOTICE:
In the table below, the values listed under "Normal Condition" are
reference values. Do not depend solely on these reference values when decidi
SEE MORE:
Right Curtain Deployment Control 1 Circuit Resistance Below Threshold (B00291A)
DESCRIPTION
DTC No. Detection Item
DTC Detection Condition Trouble Area
Warning Indicate Test Mode / Check Mode
B00291A Right Curtain Deployment Control 1 Circuit Resistance Below Threshold
One of the following conditions is met:
The airbag ECU assembly
How To Proceed With Troubleshooting
HOW TO PROCEED WITH TROUBLESHOOTING
OPERATION FLOW
HINT:
Perform troubleshooting in accordance with the procedure below. The following
is an outline of basic troubleshooting procedure. Confirm the troubleshooting procedure
for the circuit you are working on before beginning troubleshooting.
