CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
Disconnect the L195 certification ECU (smart key ECU assembly) connector.
Measure the voltage and resistance according to the value(s) in the table below.
Tech Tips
Measure the values on the wire harness side with the connector disconnected.
| Tester Connection | Input/Output | Wiring Color | Terminal Description | Condition | Specified Condition | Related Data List Item |
|---|---|---|---|---|---|---|
| L195-11 (E) - Body ground | - | W-B - Body ground | Ground | Always | Below 1 Ω | - |
| L195-2 (+B) - L195-11 (E) | Input | B - W-B | +B power supply | Power switch off | 11 to 14 V | - |
| L195-10 (CUTB) - L195-11 (E) | Input | R - W-B | Dark current cut pin* | Power switch off | 11 to 14 V | - |
*: 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 set 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 that form the detection area stops).
If the result is not as specified, there may be a malfunction on the wire harness side or the fuse is removed.
Reconnect the L195 certification ECU (smart key ECU assembly) connector.
Measure the voltage according to the value(s) in the table below.
| Tester Connection | Input/Output | Wiring Color | Terminal Description | Condition | Specified Condition | Related Data List Item |
|---|---|---|---|---|---|---|
| L197-5 (IG) - L195-11 (E) | Input | P - W-B | GR power supply | Power switch off → on (IG) | Below 1 V → 11 to 14 V | Ignition Switch |
| L197-12 (CLG1) - L195-11 (E) | Output | L - W-B*4 G - W-B*5 |
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) | Over Head + Driver Side (key diagnostic mode) |
| Procedure:
|
Pulse generation (See waveform 2) | Over Head + Driver Side (key diagnostic mode) | ||||
| L197-13 (CG1B) - L195-11 (E) | Output | Y - W-B*4 R - W-B*5 |
Output to driver door electrical key antenna (terminal on opposite side of component from CLG1 output terminal) | Procedure:
|
Pulse generation (See waveform 2) | Over Head + Driver Side (key diagnostic mode) |
| L197-11 (CLG2) - L195-11 (E)*6 | Output | G - W-B*4 L - W-B*5 |
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) | Over Head + Passenger Side (key diagnostic mode) |
| Procedure:
|
Pulse generation (See waveform 2) | Over Head + Passenger Side (key diagnostic mode) | ||||
| L197-10 (CG2B) - L195-11 (E)*6 | Output | R - W-B*4 Y - W-B*5 |
Output to front passenger door electrical key antenna (terminal on opposite side of component from CLG2 output terminal) | Procedure:
|
Pulse generation (See waveform 2) | Over Head + Passenger Side (key diagnostic mode) |
| L197-3 (CLG5) - L195-11 (E) | Output | V - W-B | Output to No. 1 indoor electrical key antenna assembly (front floor) | Procedure:
|
Pulse generation (See waveform 3) | Over Head + Front Room (key diagnostic mode) |
| L197-2 (CG5B) - L195-11 (E) | Output | L - W-B | Output to No. 1 indoor electrical key antenna assembly (front floor) (terminal on opposite side of component from CLG5 output terminal) | Procedure:
|
Pulse generation (See waveform 3) | Over Head + Front Room (key diagnostic mode) |
| L197-20 (TSW1) - L195-11 (E) | Input | G - W-B*4 W - W-B*5 |
Driver door lock sensor signal input (Sends signal from door lock sensor on front door outside handle assembly to certification ECU (smart key ECU assembly). Certification ECU (smart key ECU assembly) sends 12 V pulse waveform every 20 ms. from terminal TSW. When door lock sensor is touched, the pulse is grounded. |
Procedure:
|
Pulse generation (See waveform 5) | D-Door Trigger Switch |
| L197-8 (TSW2) - L195-11 (E)*6 | Input | W - W-B*4 G - W-B*5 |
Front passenger door lock sensor signal input (Sends signal from door lock sensor on front door outside handle assembly to certification ECU (smart key ECU assembly). Certification ECU (smart key ECU assembly) sends 12 V pulse waveform every 20 ms. from terminal TSW. When door lock sensor is touched, the pulse is grounded. |
Procedure:
|
Pulse generation (See waveform 5) | P-Door Trigger Switch |
| L197-22 (SEN1) - L195-11 (E) | Input | V - W-B*4 Y - W-B*5 |
Driver door unlock sensor signal input (when system is in unlock standby mode and touch sensor is touched, door electrical key antenna sends touch sensor input signal (sensing) to certification ECU (smart key ECU assembly)) | Procedure:
|
Pulse generation (See waveform 5) | D-Door Touch Sensor |
| L197-23 (SEN2) - L195-11 (E)*6 | Input | Y - W-B*4 V - W-B*5 |
Front passenger door unlock sensor signal input (when system is in unlock standby mode and touch sensor is touched, door electrical key antenna sends touch sensor input signal (sensing) to certification ECU (smart key ECU assembly)) | Procedure:
|
Pulse generation (See waveform 5) | P-Door Touch Sensor |
| L196-27 (TSW5) - L195-11 (E)*6 | Input | GR - W-B | Back door opener switch assembly (unlock switch) signal input | Back door opener switch assembly (unlock switch) off → on | Pulse generation (See waveform 5) | Tr/B-Door Unlock SW |
| L196-28 (TSW6) - L195-11 (E)*6 | Input | B - W-B | Back door opener switch assembly (lock switch) signal input | Back door opener switch assembly (lock switch )off → on | Pulse generation (See waveform 5) | Tr/B-Door Lock SW |
| L196-11 (CLG6) - L195-11 (E) | Output | P - W-B | Output to No. 3 indoor electrical key antenna assembly (rear floor) | Procedure:
|
Pulse generation (See waveform 3) | Over Head + Rear Room (key diagnostic mode) |
| L196-10 (CG6B) - L195-11 (E) | Output | BR - W-B | Output to No. 3 indoor electrical key antenna assembly (rear floor) (terminal on opposite side of component from CLG6 output terminal) | Procedure:
|
Pulse generation (See waveform 3) | Over Head + Rear Room (key diagnostic mode) |
| L196-9 (CLG7) - L195-11 (E) | Output | V - W-B | Output to No. 2 indoor electrical key antenna assembly (inside luggage) | Procedure:
|
Pulse generation (See waveform 3) | Over Head + Back Door (inside) (key diagnostic mode) |
| L196-8 (CG7B) - L195-11 (E) | Output | R - W-B | Output to No. 2 indoor electrical key antenna assembly (inside luggage) (terminal on opposite side of component from CLG7 output terminal) | Procedure:
|
Pulse generation (See waveform 3) | Over Head + Back Door (inside) (key diagnostic mode) |
| L197-19 (POS1) - L195-11 (E) | Output | GR - W-B*4 SB - W-B*5 |
Driver door unlock sensor power source (12 V (drops when power switch turned on (IG))) | Power switch off → on (IG) | 9 to 14 V → Below 2 V | - |
| L197-21 (POS2) - L195-11 (E)*6 | Output | SB - W-B*4 GR - W-B*5 |
Front passenger door unlock sensor power source (12 V (drops when power switch turned on (IG))) | Power switch off → on (IG) | 9 to 14 V → Below 2 V | - |
| L196-5 (RCO) - L195-11 (E) | Output | LG - W-B | 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 6) | - |
| L196-17 (RDAM) - L195-11 (E) | Input | GR - W-B*7 Y - W-B*8 |
Door control receiver verifies data received from electrical key transmitter sub-assembly. Door control receiver sends data to ECU and intermittently grounds 12 V signal from certification ECU (smart key ECU assembly). | Proceed:
|
Pulse generation (See waveform 7) | - |
| L196-6 (CSEL) - L195-11 (E) | Output | V - W-B*7 SB - W-B*8 |
Communication channel switching circuit | Procedure:
|
Below 1 V → Pulse generation | Key diagnostic mode |
| L196-2 (CLG8) - L195-11 (E)*6 | Output | G - W-B | Output to electrical key antenna (outside luggage) | Procedure:
|
Pulse generation (See waveform 4) | Over Head + Back Door |
| L196-1 (CG8B) - L195-11 (E)*6 | Output | P - W-B | Output to electrical key antenna (outside luggage) (terminal on opposite side of component from CLG8 output terminal) | Procedure:
|
Pulse generation (See waveform 4) | Over Head + Back Door |
*1: For details about the areas that are inside the entry function detection area, refer to Operation Check Click here.
*2: For details about the areas that are outside the entry function detection area, refer to Operation Check Click here.
*3: For details about the areas that are inside the wireless function operational area, refer to Operation Check Click here.
*4: for LHD
*5: for RHD
*6: w/ Entry Function
*7: w/ Tire Pressure Warning System
*8: w/o Tire Pressure Warning System
Using an oscilloscope, check waveform 1.
Tech Tips
The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
| Item | Content |
|---|---|
| Tester Connection | L197-12 (CLG1) - L195-11 (E) L197-11 (CLG2) - L195-11 (E) |
| Tool Setting | 2 V/DIV., 500 ms/DIV. |
| Condition | Procedure:
|
*: For details about the areas that are inside the entry function detection area, refer to Operation Check Click here.
Using an oscilloscope, check waveform 2.
Tech Tips
The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
| Item | Content |
|---|---|
| Tester Connection | L197-12 (CLG1) - L195-11 (E) L197-11 (CLG2) - L195-11 (E) |
| Tool Setting | 2 V/DIV., 500 ms/DIV. |
| Condition | Procedure:
|
*: For details about the areas that are outside the entry function detection area, refer to Operation Check Click here.
| Item | Content |
|---|---|
| Tester Connection | L197-13 (CG1B)- L195-11 (E) L197-10 (CG2B)- L195-11 (E) |
| Tool Setting | 2 V/DIV., 500 ms/DIV. |
| Condition | Procedure:
|
*: For details about the areas that are outside the entry function detection area, refer to Operation Check Click here.
| *a | Door open |
| *b | After approximately 30 seconds from when the door is closed |
Using an oscilloscope, check waveform 3.
Tech Tips
The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
| Item | Content |
|---|---|
| Tester Connection | L197-3 (CLG5) - L195-11 (E) L197-2 (CG5B) - L195-11 (E) L196-11 (CLG6) - L195-11 (E) L196-10 (CG6B) - L195-11 (E) L196-9 (CLG7) - L195-11 (E) L196-8 (CG7B) - L195-11 (E) |
| Tool Setting | 2 V/DIV., 500 ms/DIV. |
| Condition | Procedure:
|
| *a | Power switch off, all doors closed and Back Door Opener Switch Assembly off → on |
Using an oscilloscope, check waveform 4.
Tech Tips
The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
| Item | Content |
|---|---|
| Tester Connection | L196-2 (CLG8) - L195-11 (E) L196-1 (CG8B) - L195-11 (E) |
| Tool Setting | 2 V/DIV., 500 ms/DIV. |
| Condition | Procedure:
|
| *a | In actuality, sampling is being performed |
Using an oscilloscope, check waveform 5.
Tech Tips
The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
| Item | Content |
|---|---|
| Tester Connection | L197-20 (TSW1) - L195-11 (E) |
| Tool Setting | 2 V/DIV., 500 ms/DIV. |
| Condition | Procedure:
|
| Item | Content |
|---|---|
| Tester Connection | L197-8 (TSW2) - L195-11 (E) |
| Tool Setting | 2 V/DIV., 500 ms/DIV. |
| Condition | Procedure:
|
| Item | Content |
|---|---|
| Tester Connection | L197-22 (SEN1) - L195-11 (E) |
| Tool Setting | 2 V/DIV., 500 ms/DIV |
| Condition | Procedure:
|
| Item | Content |
|---|---|
| Tester Connection | L197-23 (SEN2) - L195-11 (E) |
| Tool Setting | 2 V/DIV., 500 ms/DIV. |
| Condition | Procedure:
|
| Item | Content |
|---|---|
| Tester Connection | L196-27 (TSW5) - L195-11 (E) |
| Tool Setting | 2 V/DIV., 500 ms/DIV |
| Condition | Back door opener switch assembly (unlock switch) off → on |
| Item | Content |
|---|---|
| Tester Connection | L196-28 (TSW6) - L195-11 (E) |
| Tool Setting | 2 V/DIV., 500 ms/DIV |
| Condition | Back door opener switch assembly (lock switch) off → on |
| *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 |
Using an oscilloscope, check waveform 6.
Tech Tips
The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
| Item | Content |
|---|---|
| Tester Connection | L196-5 (RCO) - L195-11 (E) |
| Tool Setting | 2 V/DIV., 500 ms/DIV. |
| Condition | Procedure:
|
*1: For details about the areas that are outside the entry function detection area, refer to Operation Check Click here.
*2: For details about the areas that are inside the wireless function operational area, refer to Operation Check Click here.
| *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 |
Using an oscilloscope, check waveform 7.
Tech Tips
The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
| Item | Content |
|---|---|
| Tester Connection | L196-17 (RDAM) - L195-11 (E) |
| Tool Setting | 5 V/DIV., 500 ms/DIV. |
| Condition | Procedure:
|
*1: For details about the areas that are outside the entry function detection area, refer to Operation Check Click here.
*2: For details about the areas that are inside the wireless function operational area, refer to Operation Check Click here.
CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
| *A | for LHD | *B | for RHD |
| *1 | Main Body ECU (Multiplex Network Body ECU) | *2 | 3 connectors |
Remove the main body ECU from the instrument panel junction block assembly.
Measure the voltage and resistance according to the value(s) in the table below.
| Terminal No. (Symbol) | Input/Output | Wiring Color | Terminal Description | Condition | Specified Condition | Related Data List Item |
|---|---|---|---|---|---|---|
| MB-11 (GND1) - Body ground | - | None - Body ground | Ground | Always | Below 1 Ω | - |
| L190-3 (GND2) - Body ground | - | W-B - Body ground | Ground | Always | Below 1 Ω | - |
| MB-30 (BECU) - Body ground | Input | None - Body ground | Auxiliary battery power supply (for CPU) | Power switch off | 11 to 14 V | - |
| MB-31 (ALTB) - Body ground | Input | None - Body ground | Auxiliary battery power supply (for indicator) | Power switch off | 11 to 14 V | - |
| MB-29 (ACC) - Body ground | Input | None - Body ground | ACC power supply | Power switch on (ACC) | 11 to 14 V | ACC SW |
| MB-32 (IG) - Body ground | Input | None - Body ground | Power switch power supply | Power switch on (IG) | 11 to 14 V | IG SW |
If the result is not as specified, there may be a malfunction in the wire harness.
Install the main body ECU to the instrument panel junction block assembly.
Measure the voltage according to the value(s) in the table below.
| Terminal No. (Symbol) | Input/Output | Wiring Color | Terminal Description | Condition | Specified Condition | Related Data List Item |
|---|---|---|---|---|---|---|
| 2D-36 (FRCY) - Body ground | Input | BR*1 - Body ground V*2 - Body ground |
Front door RH courtesy light switch input | Front door RH open | Below 1 V | FR Door Courtesy |
| Front door RH closed | 11 to 14 V | |||||
| 2D-35 (FLCY) - Body ground | Input | Y*1 - Body ground V*2 - Body ground |
Front door LH courtesy light switch input | Front door LH open | Below 1 V | FL Door Courtesy |
| Front door LH closed | 11 to 14 V | |||||
| L201-6 (LRCY) - Body ground | Input | G - Body ground | Rear door LH and RH courtesy light switch input | Rear door LH or RH open | Below 1 V | RL Door Courtesy SW |
| Rear door LH and RH closed | 11 to 14 V | RR Door Courtesy SW | ||||
| L201-19 (BCTY) - Body ground | Input | L - Body ground | Back door courtesy light switch input | Back door open | Below 1 V | Back Door Courtesy SW |
| Back door closed and luggage compartment light switch on | 11 to 14 V | |||||
| Back door closed and luggage compartment light switch off | Pulse generation (See waveform 1 or 2) | |||||
| 2B-8 (ACT+) - Body ground | Output | L - Body ground | Door lock motor lock drive output | Driver door control switch not pushed and driver door key cylinder in neutral position | Below 1 V | - |
| Lock side of driver door control switch pushed or driver door key cylinder in lock position | 11 to 14 V | |||||
| 2B-9 (ACT+) - Body ground | Output | R - Body ground | Door lock motor lock drive output | Driver door control switch not pushed and driver door key cylinder in neutral position | Below 1 V | - |
| Lock side of driver door control switch pushed or driver door key cylinder in lock position | 11 to 14 V | |||||
| 2B-10 (ACT+) - Body ground | Output | P - Body ground | Door lock motor lock drive output | Driver door control switch not pushed and driver door key cylinder in neutral position | Below 1 V | - |
| Lock side of driver door control switch pushed or driver door key cylinder in lock position | 11 to 14 V | |||||
| 2D-12 (ACT+) - Body ground | Output | L - Body ground | Door lock motor lock drive output | Driver door control switch not pushed and driver door key cylinder in neutral position | Below 1 V | - |
| Lock side of driver door control switch pushed or driver door key cylinder in lock position | 11 to 14 V | |||||
| 2B-1 (ACT-) - Body ground | Output | B - Body ground | Door lock motor unlock drive output | Driver door control switch not pushed and driver door key cylinder in neutral position | Below 1 V | - |
| Unlock side of driver door control switch pushed or driver door key cylinder in unlock position | 11 to 14 V | |||||
| 2D-11 (ACT-) - Body ground | Output | V - Body ground | Door lock motor unlock drive output | Driver door control switch not pushed and driver door key cylinder in neutral position | Below 1 V | - |
| Unlock side of driver door control switch pushed or driver door key cylinder in unlock position | 11 to 14 V | |||||
| 2B-3 (ACT-) - Body ground | Output | LG - Body ground | Door lock motor unlock drive output | Driver door control switch not pushed and driver door key cylinder in neutral position | Below 1 V | - |
| Unlock side of driver door control switch pushed or driver door key cylinder in unlock position | 11 to 14 V | |||||
| L201-7 (LSFL) - Body ground | Input | GR - Body ground | Front door LH lock position switch input | Front door LH unlocked | Below 1 V | FL Door Lock Pos |
| Power switch off, all doors closed and front door LH locked | Pulse generation (See waveform 1 or 2) | |||||
| L201-18 (LSFR) - Body ground | Input | LG - Body ground | Front door RH lock position switch input | Front door RH unlocked | Below 1 V | FR Door Lock Pos |
| Power switch off, all doors closed and front door RH locked | Pulse generation (See waveform 3 or 4) | |||||
| 2D-25 (LSR) - Body ground | Input | GR - Body ground | Rear door LH lock position switch input | Rear door LH or RH unlocked | Below 1 V | RL-Door Lock Pos SW |
| Power switch off, all doors closed and rear door LH and RH locked | Pulse generation (See waveform 3 or 4) | |||||
| 2B-29 (LSR) - Body ground | Input | GR - Body ground | Rear door RH lock position switch input | Rear door RH or LH unlocked | Below 1 V | RR-Door Lock Pos SW |
| Power switch off, all doors closed and rear door RH and LH locked | Pulse generation (See waveform 3 or 4) |
*:1 for LHD
*:2 for RHD
If the result is not as specified, the main body ECU (multiplex network body ECU) or instrument panel junction block assembly may have a malfunction.
Using an oscilloscope, check waveform 1.
Tech Tips
The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
| Item | Content |
|---|---|
| Terminal No. (Symbol) | L201-19 (BCTY) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Back door closed and luggage compartment light switch off |
| Item | Content |
|---|---|
| Terminal No. (Symbol) | L201-7 (LSFL) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Power switch off, all doors closed and front door LH locked |
Using an oscilloscope, check waveform 2.
Tech Tips
The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
| Item | Content |
|---|---|
| Terminal No. (Symbol) | L201-19 (BCTY) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Back door closed and luggage compartment light switch off |
| Item | Content |
|---|---|
| Terminal No. (Symbol) | L201-7 (LSFL) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Power switch off, all doors closed and front door LH locked |
Using an oscilloscope, check waveform 3.
Tech Tips
The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
| Item | Content |
|---|---|
| Terminal No. (Symbol) | L201-18 (LSFR) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Power switch off, all doors closed and front door RH locked |
| Item | Content |
|---|---|
| Terminal No. (Symbol) | 2D-25 (LSR) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Power switch off, all doors closed and rear door LH and RH locked |
| Item | Content |
|---|---|
| Terminal No. (Symbol) | 2B-29 (LSR) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Power switch off, all doors closed and rear door RH and LH locked |
Using an oscilloscope, check waveform 4.
Tech Tips
The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
| Item | Content |
|---|---|
| Terminal No. (Symbol) | L201-18 (LSFR) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Power switch off, all doors closed and front door RH locked |
| Item | Content |
|---|---|
| Terminal No. (Symbol) | 2D-25 (LSR) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Power switch off, all doors closed and rear door LH and RH locked |
| Item | Content |
|---|---|
| Terminal No. (Symbol) | 2B-29 (LSR) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Power switch off, all doors closed and rear door RH and LH locked |