Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM1000000028K8O |
Model Year Start: 2023 |
Model: GR Corolla |
Prod Date Range: [11/2022 -
] |
Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Entry Function): TERMINALS OF ECU; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [11/2022 - ] |
TERMINALS OF ECU
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
(a) Disconnect the O175 and I167 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
|
I167-29 (E) - Body ground
|
Ground
|
Always
|
Below 1 Ω
|
-
|
I167-6 (+B) - I167-29 (E)
|
Power supply
|
Ignition switch off*1
Always*2
|
11 to 14 V
|
-
|
O175-22 (CUTB) - I167-29 (E)
|
Dark current cut pin*3
|
Ignition switch off*1
Always*2
|
11 to 14 V
|
-
|
-
*1: for HV Model
-
*2: for Gasoline Model
-
*3: 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 O175 and I167 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
|
O175-24 (IGPD) - I167-29 (E)
|
IG power supply
|
Ignition switch off → ON
|
Below 1 V → 9 V or higher
|
Power source control
-
IGP Relay Circuit (Outside) Monitor
|
O175-11 (IGRD) - I167-29 (E)
|
IG power supply
|
Ignition switch off → ON
|
Below 1 V → 9 V or higher
|
Power source control
-
IGR Relay Circuit (Outside) Monitor
|
I167-21 (ACCD) - I167-29 (E)
|
ACC power supply
|
Ignition switch off → ACC
|
Below 1 V → 8.5 V or higher
|
|
I167-16 (CLG1) - I167-29 (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:
-
Ignition switch off
-
All doors closed
-
Electrical key transmitter sub-assembly not inside vehicle
-
All doors locked through wireless operation
(electrical key transmitter sub-assembly brought inside detection area*)
|
Pulse generation
(See waveform 1)
|
-
|
Procedure:
-
Ignition switch off
-
All doors closed
-
Electrical key transmitter sub-assembly not inside vehicle
-
All doors locked through wireless operation
(electrical key transmitter sub-assembly brought outside detection area*)
|
Pulse generation
(See waveform 2)
|
-
|
I167-16 (CLG1) - I167-29 (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:
-
Ignition switch off
-
Electrical key transmitter sub-assembly brought outside vehicle
-
All doors closed
-
All doors locked through wireless operation
(electrical key transmitter sub-assembly brought outside detection area*)
-
Driver door lock sensor touched
|
Pulse generation
(See waveform 3)
|
|
I167-16 (CLG1) - I167-29 (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:
-
Ignition switch off
-
Electrical key transmitter sub-assembly brought outside vehicle
-
All doors locked
-
Electrical key transmitter sub-assembly not near the vehicle
-
Driver door unlock sensor touched
|
Pulse generation
(See waveform 4)
|
Smart Key
-
Driver Side Unlock Sensor
|
I167-15 (CG1B) - I167-29 (E)
|
Output to driver door electrical key antenna (terminal on opposite side of component from CLG1 output terminal)
|
Procedure:
-
Ignition switch off
-
All doors closed
-
Electrical key transmitter sub-assembly not inside vehicle
-
All doors locked through wireless operation
(electrical key transmitter sub-assembly brought inside detection area*)
|
Pulse generation
(See waveform 5)
|
-
|
Procedure:
-
Ignition switch off
-
All doors closed
-
Electrical key transmitter sub-assembly not inside vehicle
-
All doors locked through wireless operation
(electrical key transmitter sub-assembly brought outside detection area*)
|
Pulse generation
(See waveform 6)
|
-
|
I167-10 (CLG2) - I167-29 (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:
-
Ignition switch off
-
All doors closed
-
Electrical key transmitter sub-assembly not inside vehicle
-
All doors locked through wireless operation
(electrical key transmitter sub-assembly brought inside detection area*)
|
Pulse generation
(See waveform 1)
|
-
|
Procedure:
-
Ignition switch off
-
All doors closed
-
Electrical key transmitter sub-assembly not inside vehicle
-
All doors locked through wireless operation
(electrical key transmitter sub-assembly brought outside detection area*)
|
Pulse generation
(See waveform 2)
|
-
|
I167-10 (CLG2) - I167-29 (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:
-
Ignition switch off
-
Electrical key transmitter sub-assembly brought outside vehicle
-
All doors closed
-
All doors locked through wireless operation
(electrical key transmitter sub-assembly brought outside detection area*)
-
Front passenger door lock sensor touched
|
Pulse generation
(See waveform 3)
|
Smart Key
-
Passenger Side Lock Sensor
|
I167-10 (CLG2) - I167-29 (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:
-
Ignition switch off
-
Electrical key transmitter sub-assembly brought outside vehicle
-
All doors locked
-
Electrical key transmitter sub-assembly not near the vehicle
-
Front passenger door unlock sensor touched
|
Pulse generation
(See waveform 4)
|
Smart Key
-
Passenger Side Unlock Sensor
|
I167-9 (CG2B) - I167-29 (E)
|
Output to front passenger door electrical key antenna (terminal on opposite side of component from CLG2 output terminal)
|
Procedure:
-
Ignition switch off
-
All doors closed
-
Electrical key transmitter sub-assembly not inside vehicle
-
All doors locked through wireless operation
(electrical key transmitter sub-assembly brought inside detection area*)
|
Pulse generation
(See waveform 5)
|
-
|
Procedure:
-
Ignition switch off
-
All doors closed
-
Electrical key transmitter sub-assembly not inside vehicle
-
All doors locked through wireless operation
(electrical key transmitter sub-assembly brought outside detection area*)
|
Pulse generation
(See waveform 6)
|
-
|
O174-10 (CLG7) - I167-29 (E)
|
for Sedan:
-
Output to No. 3 indoor electrical key antenna assembly (inside luggage compartment)
|
Procedure:
-
Door is closed
-
Ignition switch off
-
Electrical key transmitter sub-assembly not inside vehicle
-
Driver door lock sensor touched
|
Pulse generation
(See waveform 7)
|
-
|
O174-9 (CG7B) - I167-29 (E)
|
for Sedan:
-
Output to No. 3 indoor electrical key antenna assembly (inside luggage compartment) (terminal on opposite side of component from CLG7 output terminal)
|
Procedure:
-
Door is closed
-
Ignition switch off
-
Electrical key transmitter sub-assembly not inside vehicle
-
Driver door lock sensor touched
|
Pulse generation
(See waveform 7)
|
-
|
O174-4 (CLG8) - I167-29 (E)
|
Output to electrical key antenna (outside luggage compartment)
|
Procedure:
except Sedan:
-
Ignition switch off
-
Electrical key transmitter sub-assembly brought outside vehicle
-
All doors closed
-
Back door opener switch sub-assembly off → on
for Sedan:
-
Ignition switch off
-
Electrical key transmitter sub-assembly brought outside vehicle
-
All doors closed
-
Luggage electrical key switch off → on
|
Pulse generation
(See waveform 8)
|
-
|
O174-3 (CG8B) - I167-29 (E)
|
Output to electrical key antenna (outside luggage compartment) (terminal on opposite side of component from CLG8 output terminal)
|
Procedure:
except Sedan:
-
Ignition switch off
-
Electrical key transmitter sub-assembly brought outside vehicle
-
All doors closed
-
Back door opener switch sub-assembly off → on
for Sedan:
-
Ignition switch off
-
Electrical key transmitter sub-assembly brought outside vehicle
-
All doors closed
-
Luggage electrical key switch off → on
|
Pulse generation
(See waveform 9)
|
-
|
O174-16 (TSW5) - I167-29 (E)
|
except Sedan:
-
Back door opener switch sub-assembly (open switch) signal input
for Sedan:
-
Luggage electrical key switch signal input
|
except Sedan:
-
Back door opener switch sub-assembly (open switch) off → on
for Sedan:
-
Luggage electrical key switch off → on
|
Pulse generation
(See waveform 10)
|
Smart Key
-
Trunk Lid/Back Door Unlock Switch
|
O174-17 (TSW6) - I167-29 (E)
|
except Sedan:
-
Back door opener switch sub-assembly (lock switch) signal input
|
Back door opener switch sub-assembly (lock switch) off → on
|
Pulse generation
(See waveform 10)
|
Smart Key
-
Trunk Lid/Back Door Lock Switch
|
O174-21 (RCO) - I167-29 (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:
-
Ignition switch off
-
Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area
-
Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed
|
Pulse generation
(See waveform 11)
|
-
|
O174-11 (RDAM) - I167-29 (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:
-
Ignition switch off
-
All doors locked
-
Electrical key transmitter sub-assembly not inside vehicle
-
Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area
-
Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed
|
Pulse generation
(See waveform 12)
|
-
|
O174-12 (CSEL) - I167-29 (E)
|
Communication channel switching circuit
|
Procedure:
-
Ignition switch off
-
All doors closed
|
Below 1 V → Pulse generation
|
-
|
-
*: For details about the entry function detection area, refer to Operation Check.
Click here
(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
|
I167-16 (CLG1) - I167-29 (E)
I167-10 (CLG2) - I167-29 (E)
|
Tool Setting
|
5 V/DIV., 500 ms./DIV.
|
Condition
|
Procedure:
-
Ignition switch off
-
All doors closed
-
Electrical key transmitter sub-assembly not inside vehicle
-
All doors locked through wireless operation
(electrical key transmitter sub-assembly brought inside detection area*)
|
-
*: 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
|
I167-16 (CLG1) - I167-29 (E)
I167-10 (CLG2) - I167-29 (E)
|
Tool Setting
|
5 V/DIV., 500 ms./DIV.
|
Condition
|
Procedure:
-
Ignition switch off
-
All doors closed
-
Electrical key transmitter sub-assembly not inside vehicle
-
All doors locked through wireless operation
(electrical key transmitter sub-assembly brought outside detection area*)
|
-
*: 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
|
Waveform 3 (Reference)
Item
|
Content
|
Tester Connection
|
I167-16 (CLG1) - I167-29 (E)
|
Tool Setting
|
5 V/DIV., 100 ms./DIV.
|
Condition
|
Procedure:
-
Ignition switch off
-
Electrical key transmitter sub-assembly brought outside vehicle
-
All doors closed
-
All doors locked through wireless operation
(electrical key transmitter sub-assembly brought outside detection area*)
-
Driver door lock sensor not touched → touched
|
Item
|
Content
|
Tester Connection
|
I167-10 (CLG2) - I167-29 (E)
|
Tool Setting
|
5 V/DIV., 100 ms./DIV.
|
Condition
|
Procedure:
-
Ignition switch off
-
Electrical key transmitter sub-assembly brought outside vehicle
-
All doors closed
-
All doors locked through wireless operation
(electrical key transmitter sub-assembly brought outside detection area*)
-
Front passenger door lock sensor not touched → touched
|
-
*: 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
|
Waveform 4 (Reference)
Item
|
Content
|
Tester Connection
|
I167-16 (CLG1) - I167-29 (E)
|
Tool Setting
|
5 V/DIV., 100 ms./DIV.
|
Condition
|
Procedure:
-
Ignition switch off
-
Electrical key transmitter sub-assembly brought outside vehicle
-
All doors locked
-
Electrical key transmitter sub-assembly not near the vehicle
-
Driver door unlock sensor not touched → touched
|
Item
|
Content
|
Tester Connection
|
I167-10 (CLG2) - I167-29 (E)
|
Tool Setting
|
5 V/DIV., 100 ms./DIV.
|
Condition
|
Procedure:
-
Ignition switch off
-
Electrical key transmitter sub-assembly brought outside vehicle
-
All doors locked
-
Electrical key transmitter sub-assembly not near the vehicle
-
Front passenger door unlock sensor not touched → touched
|
(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
|
I167-15 (CG1B) - I167-29 (E)
I167-9 (CG2B) - I167-29 (E)
|
Tool Setting
|
5 V/DIV., 500 ms./DIV.
|
Condition
|
Procedure:
-
Ignition switch off
-
All doors closed
-
Electrical key transmitter sub-assembly not inside vehicle
-
All doors locked through wireless operation
(electrical key transmitter sub-assembly brought inside detection area*)
|
-
*: 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
|
I167-15 (CG1B) - I167-29 (E)
I167-9 (CG2B) - I167-29 (E)
|
Tool Setting
|
5 V/DIV., 500 ms./DIV.
|
Condition
|
Procedure:
-
Ignition switch off
-
All doors closed
-
Electrical key transmitter sub-assembly not inside vehicle
-
All doors locked through wireless operation
(electrical key transmitter sub-assembly brought outside detection area*)
|
-
*: For details about the entry function detection area, refer to Operation Check.
Click here
(k) Using an oscilloscope, check waveform 7. (for Sedan)
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
|
O174-10 (CLG7) - I167-29 (E)
O174-9 (CG7B) - I167-29 (E)
|
Tool Setting
|
2 V/DIV., 500 ms/DIV.
|
Condition
|
Procedure:
-
Door is closed
-
Ignition switch off
-
Electrical key transmitter sub-assembly not inside vehicle
-
Driver door lock sensor touched
|
(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
|
O174-4 (CLG8) - I167-29 (E)
|
Tool Setting
|
5 V/DIV., 50 ms./DIV.
|
Condition
|
Procedure:
except Sedan:
-
Ignition switch off
-
Electrical key transmitter sub-assembly brought outside vehicle
-
All doors closed
-
Back door opener switch sub-assembly off → on
for Sedan:
-
Ignition switch off
-
Electrical key transmitter sub-assembly brought outside vehicle
-
All doors closed
-
Luggage electrical key switch off → on
|
(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.
Waveform 9 (Reference)
Item
|
Content
|
Tester Connection
|
O174-3(CG8B) - I167-29(E)
|
Tool Setting
|
5 V/DIV., 50 ms./DIV.
|
Condition
|
Procedure:
except Sedan:
-
Ignition switch off
-
Electrical key transmitter sub-assembly brought outside vehicle
-
All doors closed
-
Back door opener switch sub-assembly off → on
for Sedan:
-
Ignition switch off
-
Electrical key transmitter sub-assembly brought outside vehicle
-
All doors closed
-
Luggage electrical key 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.
*A
|
except Sedan
|
*B
|
for Sedan
|
*a
|
Checking for switch on signal at short intervals
|
*b
|
Before back door opener switch sub-assembly pressed
|
*c
|
Before luggage electrical key switch pressed
|
*d
|
After back door opener switch sub-assembly pressed
|
*e
|
After luggage electrical key switch pressed
|
Waveform 10 (Reference)
Item
|
Content
|
Tester Connection
|
O174-16 (TSW5) - I167-29 (E)
|
Tool Setting
|
2 V/DIV., 500 ms./DIV.
|
Condition
|
except Sedan:
-
Back door opener switch sub-assembly (open switch) off → on
for Sedan:
-
Luggage electrical key switch off → on
|
Item
|
Content
|
Tester Connection
|
O174-17 (TSW6) - I167-29 (E)*
|
Tool Setting
|
2 V/DIV., 500 ms./DIV.
|
Condition
|
Back door opener switch sub-assembly (lock switch) off → on
|
(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.
*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
|
Waveform 11 (Reference)
Item
|
Content
|
Tester Connection
|
O174-21 (RCO) - I167-29 (E)
|
Tool Setting
|
2 V/DIV., 500 ms./DIV.
|
Condition
|
Procedure:
-
Ignition switch off
-
Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area
-
Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed
|
(p) Using an oscilloscope, check waveform 12.
NOTICE:
The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
*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
|
Waveform 11 (Reference)
Item
|
Content
|
Tester Connection
|
O174-11 (RDAM) - I167-29 (E)
|
Tool Setting
|
5 V/DIV., 500 ms./DIV.
|
Condition
|
Procedure:
-
Ignition switch off
-
All doors locked
-
Electrical key transmitter sub-assembly not inside vehicle
-
Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area
-
Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed
|
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.
Click here
(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*1
Always*2
|
11 to 14 V
|
-
*1: for HV Model
-
*2: for Gasoline Model
SMART KEY SYSTEM (for Start Function)
for HV Model: Click here
for Gasoline Model: Click here
POWER DOOR LOCK CONTROL SYSTEM
Click here
WIRELESS DOOR LOCK CONTROL SYSTEM
Click here
|