Toyota Corolla Cross: Terminals Of Ecu
TERMINALS OF ECU
NOTICE:
- When performing an inspection, make sure that "ACC Customize" is set to "ON" using the multi-display.
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- When "ACC Customize" is set to "ON" (ACC supply power enabled), the certification ECU (smart key ECU assembly) controls the ACC relay on and off. When "ACC Customize" is set to "OFF" (ACC supply power disabled), the certification ECU (smart key ECU assembly) and radio and display receiver assembly control the ACC relay on and off.
Therefore, inspection conditions and results may differ depending on whether "ACC customize" is set to ON or OFF when inspecting ACC related terminals.
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
(a) Disconnect the I223 and I222 certification ECU (smart key ECU assembly) connectors.
(b) Measure the voltage and resistance according to the value(s) in the table below.
|
Tester Connection | Terminal Description |
Condition | Specified Condition |
Related Data List Item |
|---|---|---|---|---|
|
I222-29 (E) - Body ground |
Ground | Always |
Below 1 Ω | - |
|
I222-6 (+B) - I222-29 (E) |
Power supply | Ignition switch off |
11 to 14 V | - |
|
I223-22 (CUTB) - I222-29 (E) |
Dark current cut pin*1 |
Ignition switch off | 11 to 14 V |
- |
- *1: In order to prevent the vehicle auxiliary battery from being depleted when the vehicle is shipped long distances, a fuse that cuts unnecessary electrical load while the vehicle is being shipped is installed in the circuit. If the fuse is removed, the circuit becomes open. If the fuse that is between the vehicle auxiliary battery and terminal CUTB is removed and the circuit is open, the certification ECU (smart key ECU assembly) changes to a certain control mode (example: the transmission of radio waves every 0.25 seconds, which form the detection area, stops).
(c) Reconnect the I223 and I222 certification ECU (smart key ECU assembly) connectors.
(d) Measure the voltage and check for pulses according to the value(s) in the table below.
|
Tester Connection | Terminal Description |
Condition | Specified Condition |
Related Data List Item |
|---|---|---|---|---|
|
I223-24 (IGPD) - I222-29 (E) |
IG power supply | Ignition switch off → ON |
Below 1 V → 9 V or higher | Power source control
|
| I223-11 (IGRD) - I222-29 (E) |
IG power supply | Ignition switch off → ON |
Below 1 V → 9 V or higher | Power source control
|
| I222-21 (ACCD) - I222-29 (E) |
ACC power supply | Ignition switch off → ACC |
Below 1 V → 8.5 V or higher | Power source control
|
|
I222-16 (CLG1) - I222-29 (E) |
Output to driver door electrical key antenna (request signal (challenge) is sent to door electrical key antenna from certification ECU (smart key ECU assembly) to form detection area) |
Procedure:
| Pulse generation (See waveform 1) | - |
|
Procedure:
| Pulse generation (See waveform 2) | - | ||
|
I222-16 (CLG1) - I222-29 (E) |
Input to driver door lock sensor (front door outside handle assembly (for driver door) lock sensor on signal is sent to the certification ECU (smart key ECU assembly)) |
Procedure:
| Pulse generation (See waveform 3) | Smart Key
|
| I222-16 (CLG1) - I222-29 (E) |
Input to driver door unlock sensor (when system is in unlock standby mode and unlock sensor is touched, door electrical key antenna sends unlock sensor input signal (sensing) to certification ECU (smart key ECU assembly)) |
Procedure:
| Pulse generation (See waveform 4) | Smart Key
|
|
I222-15 (CG1B) - I222-29 (E) |
Output to driver door electrical key antenna (terminal on opposite side of component from CLG1 output terminal) |
Procedure:
| Pulse generation (See waveform 5) | - |
|
Procedure:
| Pulse generation (See waveform 6) | - | ||
|
I222-10 (CLG2) - I222-29 (E) |
Output to front passenger door electrical key antenna (request signal (challenge) is sent to door electrical key antenna from certification ECU (smart key ECU assembly) to form detection area) |
Procedure:
| Pulse generation (See waveform 1) | - |
|
Procedure:
| Pulse generation (See waveform 2) | - | ||
|
I222-10 (CLG2) - I222-29 (E) |
Input to front passenger door lock sensor (front door outside handle assembly (for front passenger door) lock sensor on signal is sent to the certification ECU (smart key ECU assembly)) |
Procedure:
| Pulse generation (See waveform 3) | Smart Key
|
| I222-10 (CLG2) - I222-29 (E) |
Input to front passenger door unlock sensor (when system is in unlock standby mode and unlock sensor is touched, door electrical key antenna sends unlock sensor input signal (sensing) to certification ECU (smart key ECU assembly)) |
Procedure:
| Pulse generation (See waveform 4) | Smart Key
|
|
I222-9 (CG2B) - I222-29 (E) |
Output to front passenger door electrical key antenna (terminal on opposite side of component from CLG2 output terminal) |
Procedure:
| Pulse generation (See waveform 5) | - |
|
Procedure:
| Pulse generation (See waveform 6) | - | ||
|
O200-4 (CLG8) - I222-29 (E) |
Output to electrical key antenna (outside luggage compartment) |
Procedure:
| Pulse generation (See waveform 7) | - |
|
O200-3 (CG8B) - I222-29 (E) |
Output to electrical key antenna (outside luggage compartment) (terminal on opposite side of component from CLG8 output terminal) |
Procedure:
| Pulse generation (See waveform 8) | - |
|
O200-16 (TSW5) - I222-29 (E) |
|
| Pulse generation (See waveform 9) | Smart Key
|
| O200-17 (TSW6) - I222-29 (E) |
| Back door opener switch sub-assembly (lock switch) off → on |
Pulse generation (See waveform 9) | Smart Key
|
| O200-21 (RCO) - I222-29 (E) |
Output to door control receiver (Power supply for door control receiver. Certification ECU (smart key ECU assembly) outputs 5 V when receiver starts operating.) |
Procedure:
| Pulse generation (See waveform 10) | - |
|
O200-11 (RDAM) - I222-29 (E) |
Door control receiver verifies data received from electrical key transmitter sub-assembly. Door control receiver sends data from electrical key transmitter sub-assembly to certification ECU (smart key ECU assembly) (Door control receiver intermittently grounds 12 V signal from certification ECU (smart key ECU assembly)). |
Proceed:
| Pulse generation (See waveform 11) | - |
|
O200-12 (CSEL) - I222-29 (E) |
Communication channel switching circuit |
Procedure:
| Below 1 V → Pulse generation |
- |
- *: For details about the entry function detection area, refer to Operation Check.
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(e) Using an oscilloscope, check waveform 1.
NOTICE:
The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
Waveform 1 (Reference) |
Item | Content |
|---|---|
|
Tester Connection | I222-16 (CLG1) - I222-29 (E) I222-10 (CLG2) - I222-29 (E) |
|
Tool Setting | 5 V/DIV., 500 ms./DIV. |
|
Condition | Procedure:
|
- *: For details about the entry function detection area, refer to Operation Check.
Click here
(f) Using an oscilloscope, check waveform 2.
NOTICE:
The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
Waveform 2 (Reference) |
Item | Content |
|---|---|
|
Tester Connection | I222-16 (CLG1) - I222-29 (E) I222-10 (CLG2) - I222-29 (E) |
|
Tool Setting | 5 V/DIV., 500 ms./DIV. |
|
Condition | Procedure:
|
- *: For details about the entry function detection area, refer to Operation Check.
Click here
(g) Using an oscilloscope, check waveform 3.
NOTICE:
The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
|
*a | Lock sensor not touched |
|
*b | Lock sensor touched |
|
Item | Content |
|---|---|
|
Tester Connection | I222-16 (CLG1) - I222-29 (E) |
|
Tool Setting | 5 V/DIV., 100 ms./DIV. |
|
Condition | Procedure:
|
|
Item | Content |
|---|---|
|
Tester Connection | I222-10 (CLG2) - I222-29 (E) |
|
Tool Setting | 5 V/DIV., 100 ms./DIV. |
|
Condition | Procedure:
|
- *: For details about the entry function detection area, refer to Operation Check.
Click here
(h) Using an oscilloscope, check waveform 4.
NOTICE:
The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
|
*a | Unlock sensor not touched |
|
*b | Unlock sensor touched |
|
Item | Content |
|---|---|
|
Tester Connection | I222-16 (CLG1) - I222-29 (E) |
|
Tool Setting | 5 V/DIV., 100 ms./DIV. |
|
Condition | Procedure:
|
|
Item | Content |
|---|---|
|
Tester Connection | I222-10 (CLG2) - I222-29 (E) |
|
Tool Setting | 5 V/DIV., 100 ms./DIV. |
|
Condition | Procedure:
|
(i) Using an oscilloscope, check waveform 5.
NOTICE:
The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
Waveform 5 (Reference) |
Item | Content |
|---|---|
|
Tester Connection | I222-15 (CG1B) - I222-29 (E) I222-9 (CG2B) - I222-29 (E) |
|
Tool Setting | 5 V/DIV., 500 ms./DIV. |
|
Condition | Procedure:
|
- *: For details about the entry function detection area, refer to Operation Check.
Click here
(j) Using an oscilloscope, check waveform 6.
NOTICE:
The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
Waveform 6 (Reference) |
Item | Content |
|---|---|
|
Tester Connection | I222-15 (CG1B) - I222-29 (E) I222-9 (CG2B) - I222-29 (E) |
|
Tool Setting | 5 V/DIV., 500 ms./DIV. |
|
Condition | Procedure:
|
- *: For details about the entry function detection area, refer to Operation Check.
Click here
(k) Using an oscilloscope, check waveform 7.
NOTICE:
The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
Waveform 7 (Reference) |
Item | Content |
|---|---|
|
Tester Connection | O200-4 (CLG8) - I222-29 (E) |
|
Tool Setting | 5 V/DIV., 50 ms./DIV. |
|
Condition | Procedure:
|
(l) Using an oscilloscope, check waveform 8.
NOTICE:
The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
Waveform 8 (Reference) |
Item | Content |
|---|---|
|
Tester Connection | O200-3(CG8B) - I222-29(E) |
|
Tool Setting | 5 V/DIV., 50 ms./DIV. |
|
Condition | Procedure:
|
(m) Using an oscilloscope, check waveform 9.
NOTICE:
The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
|
*a | Checking for switch on signal at short intervals |
|
*b | Before back door opener switch sub-assembly pressed |
|
*c | After back door opener switch sub-assembly pressed |
|
Item | Content |
|---|---|
|
Tester Connection | O200-16 (TSW5) - I222-29 (E) |
|
Tool Setting | 2 V/DIV., 500 ms./DIV. |
|
Condition |
|
|
Item | Content |
|---|---|
|
Tester Connection | O200-17 (TSW6) - I222-29 (E) |
|
Tool Setting | 2 V/DIV., 500 ms./DIV. |
|
Condition | Back door opener switch sub-assembly (lock switch) off → on |
(n) Using an oscilloscope, check waveform 10.
NOTICE:
The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
.png)
|
*a | Before lock or unlock switch of electrical key transmitter sub-assembly pressed |
|
*b | After lock or unlock switch of electrical key transmitter sub-assembly pressed |
|
Item | Content |
|---|---|
|
Tester Connection | O200-21 (RCO) - I222-29 (E) |
|
Tool Setting | 2 V/DIV., 500 ms./DIV. |
|
Condition | Procedure:
|
(o) Using an oscilloscope, check waveform 11.
NOTICE:
The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
.png)
|
*a | Before lock or unlock switch of electrical key transmitter sub-assembly pressed |
|
*b | After lock or unlock switch of electrical key transmitter sub-assembly pressed |
|
Item | Content |
|---|---|
|
Tester Connection | O200-11 (RDAM) - I222-29 (E) |
|
Tool Setting | 5 V/DIV., 500 ms./DIV. |
|
Condition | Procedure:
|
CHECK POWER DISTRIBUTION BOX ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
(a) Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.
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(b) Measure the voltage and resistance according to the value(s) in the table below.
|
Tester Connection | Terminal Description |
Condition | Specified Condition |
|---|---|---|---|
|
MB-13 (GND1) - Body ground |
Ground | Always |
Below 1 Ω |
|
MB-26 (BECU) - Body ground |
Auxiliary battery power supply (for CPU) |
Ignition switch off | 11 to 14 V |
SMART KEY SYSTEM (for Start Function)
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POWER DOOR LOCK CONTROL SYSTEM
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WIRELESS DOOR LOCK CONTROL SYSTEM
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Data List / Active Test
DATA LIST / ACTIVE TEST
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 part i
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Smart Key System (for Entry Function)
DTC No. Detection Item
Link B27A113
Driver Side Electrical Antenna Circuit Open
B27A213 Fr
Driver Side Electrical Antenna Circuit Open (B27A113)
DESCRIPTION The certification ECU (smart key ECU assembly) generates a request signal and transmits the signal to the front door outside handle assembly (for driver door) (electrical key antenna) at i
SEE MORE:
System Malfunction Message is Displayed on the Multi-information Display
SYSTEM DESCRIPTION If an abnormal vehicle speed information is detected by the certification ECU (smart key ECUassembly), a system malfunction message is displayed on the multi-information display. WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
When using the GTS with the ignition switch of
Utility
UTILITY
Transition to Online Axis Alignment Mode
NOTICE:
This utility transitions to online axis alignment mode of the millimeter
wave radar sensor assembly.
(a) Following the instructions on the GTS, perform "Transition
to Online Axis Alignment Mode".
Body Electrical > Front R
