Toyota Corolla Cross: Terminals Of Ecu
TERMINALS OF ECU
CLEARANCE WARNING ECU ASSEMBLY
(a) Disconnect the I24 clearance warning ECU assembly connector.
(b) Measure the voltage and resistance on the wire harness side connector according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|
|
I24-1 (IG) - I24-31 (E) |
IG power source signal |
Ignition switch off |
Below 1 V |
|
Ignition switch ON |
10.5 to 16 V |
||
|
I24-31 (E) - Body ground |
Ground |
Always |
Below 1 Ω |
(c) Reconnect the I24 clearance warning ECU assembly connector.
(d) Measure the voltage, resistance and check for pulses according to the value(s) in the table below.
|
Terminal No. (Symbol) |
Terminal Description |
Condition |
Specified Condition |
|---|---|---|---|
|
I24-2 (BOF) - I24-31 (E) |
Power source for front sensor circuit |
Ignition switch off |
Below 1 V |
|
11 to 14 V |
||
|
I24-4 (SOF) - I24-31 (E) |
Front sensor communication signal (Front clearance sonar sensor) |
|
Pulse generation (Refer to waveform 1) |
|
I24-3 (E5) - I24-31 (E) |
Ground for front clearance sonar |
Always |
Below 1 Ω |
|
I24-19 (BOR) - I24-31 (E) |
Power source for rear sensor circuit |
Ignition switch off |
Below 1 V |
|
11 to 14 V |
||
|
I24-21 (SOR) - I24-31 (E) |
Rear sensor communication signal (Rear clearance sonar sensor) |
|
Pulse generation (Refer to waveform 3) |
|
I24-20 (E1) - I24-31 (E) |
Ground for rear clearance sonar |
Always |
Below 1 Ω |
(e) Using an oscilloscope, check waveform 1.
(1) Waveform 1 (Reference)
|
Item |
Content |
|---|---|
|
Measurement terminal |
I24-4 (SOF) - I24-31 (E) |
|
Measurement setting |
1 V/DIV., 100 μs./DIV. |
|
Condition |
|
(f) Using an oscilloscope, check waveform 3.
(1) Waveform 3 (Reference)
|
Item |
Content |
|---|---|
|
Measurement terminal |
I24-21 (SOR) - I24-31 (E) |
|
Measurement setting |
1 V/DIV., 100 μs./DIV. |
|
Condition |
|
READ NEXT:
Diagnosis System
DIAGNOSIS SYSTEM
DESCRIPTION
(a) When troubleshooting a vehicle with a diagnosis system, the
only difference from the usual troubleshooting procedure is connecting the GTS to
the vehicle and rea
Data List / Active Test
DATA LIST / ACTIVE TEST
CHECK USING GTS (DATA LIST)
(a) Data List
(1) Read the Data List according to the display on the GTS.
Body Electrical > Clearance Warning > Data List
Test
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
Intuitive Parking Assist System
DTC No.
Detection Item
Link
C161504
Clearance Warning ECU System Internal F
SEE MORE:
Electronic Brake Booster Motor "A" Temperature Sensor "A" Circuit Voltage Out
of Range (C148A1C,...,C149A1C)
DESCRIPTION
Refer to DTC C11704B
Click here
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
MIL
DTC Output from
Note
C148A1C
Electronic Brake Booster Motor "A" Temperat
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
NOTICE:
Before replacing the main body ECU (multiplex network body ECU) or certification ECU (smart key ECU assembly), refer to Registration.
If the headlight ECU sub-assembly LH has been replaced, it is necessary to synchronize the vehicle information and initialize the
