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 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 |
|
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 |
|
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 |
|
ECM (for Gasoline Model)
Click here .gif)
COMBINATION METER ASSEMBLY
Click here
BLIND SPOT MONITOR SENSOR RH (A)
Click here
BLIND SPOT MONITOR SENSOR LH (B)
Click here
HYBRID VEHICLE CONTROL ECU (for HEV Model)
Click here
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Diagnosis System
DIAGNOSIS SYSTEM
DESCRIPTION
(a) Parking support brake system data and Diagnostic Trouble Codes
(DTCs) can be read from the Data Link Connector 3 (DLC3) of the vehicle. When the
system seems to
Fail-safe Chart
FAIL-SAFE CHART
FAIL-SAFE FUNCTION
(a) If a malfunction is detected in the parking support brake system,
the warning message "PKSB Malfunction Visit Your Dealer" or "PKSB Unavailabl
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:
Inspection
INSPECTION PROCEDURE 1. INSPECT FRONT SEAT INNER BELT ASSEMBLY (for Driver Side)
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection Condition
Specified Condition
O49-3(+) - O49-2(-)
Driver side seat
Engine Coolant Temperature Sensor 1 Circuit Short to Battery or Open (P011515)
DESCRIPTION Refer to DTC P011511. Click here
HINT: When DTC P011515 is stored, the ECM enters fail-safe mode. During fail-safe mode, the engine coolant temperature is estimated to be 80°C (176°F) by the ECM. Fail-safe mode continues until a pass condition is detected.
DTC No. Detection
