Toyota Corolla Cross: Terminals Of Ecu
TERMINALS OF ECU
CHECK VEHICLE APPROACHING SPEAKER CONTROLLER
(a) Disconnect the I256 vehicle approaching speaker controller connector.
(b) Measure the voltage and resistance according to the value(s) in the table below.
|
Terminal No. (Symbol) | Terminal Description |
Condition | Specified Condition |
|---|---|---|---|
|
I256-7 (+B) - Body ground |
Power source | Ignition switch off |
11 to 14 V |
|
I256-12 (GND) - Body ground |
Ground | Always |
Below 1 Ω |
(c) Connect the I256 vehicle approaching speaker controller connector.
(d) Check the signal waveform and check for pulses according to the condition(s) in the table below.
|
Terminal No. (Symbol) | Terminal Description |
Condition | Specified Condition |
|---|---|---|---|
|
I256-3 (SP+) - I256-4 (SP-) |
Vehicle approaching speaker assembly output |
Vehicle approaching speaker assembly operating |
A waveform synchronized with the sound is output. (See Waveform 1) |
|
I256-1 (CANH) - I256-12 (GND) |
CAN communication line |
Ignition switch ON | Pulse generation |
|
I256-2 (CANL) - I256-12 (GND) |
CAN communication line |
Ignition switch ON | Pulse generation |
(1) Waveform
|
Item | Condition |
|---|---|
|
Tester Connection | I256-3 (SP+) - I256-4 (SP-) |
|
Tool Setting | 1 V/DIV., 500 ms./DIV. |
|
Condition | Vehicle approaching speaker assembly operating |
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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 deciding whether a p
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Acoustic Vehicle Alerting System
DTC No. Detection Item
Link B135013
Acoustic Vehicle Alerting Speaker Circuit Open
B135019 Acoustic
Acoustic Vehicle Alerting Speaker Circuit Open (B135013,B135019)
DESCRIPTION The vehicle approaching speaker assembly circuit consists of the vehicle approaching speaker controller and vehicle approaching speaker assembly.
This DTC is stored when a malfunction is
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