Toyota Yaris: Smart Key System (for Start Function) / Check For Intermittent Problems
CHECK FOR INTERMITTENT PROBLEMS
NOTICE:
- Operation history is stored in the RAM or EEPROM of the certification ECU (smart key ECU assembly). As the cause of a malfunction stored in the RAM will be cleared when the cable is disconnected from the negative (-) battery terminal, do not disconnect the cable from the negative (-) battery terminal before checking and recording are complete.
- If the vehicle or vehicle controls are operated (for example, during initial inspection when the vehicle is brought in for repair) before operation history has been read and saved, the operation history information could be lost.
- The operation history function uses the current system time of the GTS and the time counter inside the controlling ECU to calculate the time shown in the operation history. For this reason, before reading the operation history, first make sure that the GTS system clock is accurately set to the current time.
Vehicle Control History (RoB)
HINT:
The certification ECU (smart key ECU assembly) stores the vehicle control history (RoB) of the smart key system and it can be read using the GTS.
(a) Read the Vehicle Control History (RoB) according to the display on the GTS.
Body Electrical > Smart Key > Utility| Tester Display |
|---|
| Vehicle Control History (RoB) |
| Code | Item List | Item Description | Note |
|---|---|---|---|
| X0A10 | Auto Entry Mode Switch History | The certification ECU mode changed when the GTS was connected. | - |
| X0A11 | Customize (Auto Entry Cancel) | The smart functionality was canceled via customization. | - |
| X0A12 | Engine Start (Inactive) | Engine could not be started because steering lock status was unlock not confirmed. | - |
| X0A13 | Engine Start | Engine could not be started because immobiliser was set. | - |
| X0A14 | Radio Wave Interference (RF Reception Not Available) | An attempt was made to start the engine without a key. | - |
| X0A15 | Engine Start Inactive (Steering Lock System) | Engine could not be started because steering lock lever was engaged. | - |
| X0A18 | Auto Entry Wireless Operation History (Lock/Unlock) | Lock/unlock was performed by wireless operation. | - |
| X0A19 | Auto Entry Wireless Operation History (Open/Close) | Power slide door/back door was opened/closed by wireless operation. | - |
| X0A1A | Warning Operation History | Warning operation was performed by a function of the certification ECU. | - |
| X0A1B | Registration Function (Reason for Non-operation) | The reason that key registration failed. | - |
| X0A1C | Radio Wave Interference (RF Signal Received) | Smart system did not operate due to effects of radio frequency interference. | - |
| X0A1D | Auto Entry Lock (Inactive) | The reason that entry lock did not operate. | - |
| X0A1E | Auto Entry Unlock (Inactive) | The reason that operations other than entry lock operation did not operate correctly. | - |
HINT:
Some items may not be displayed depending on the specifications of the vehicle.
(b) Read the Vehicle Control History (RoB) according to the display on the GTS.
Body Electrical > Power Source Control > Utility| Tester Display |
|---|
| Vehicle Control History (RoB) |
| Code | Item List | Item Description | Note |
|---|---|---|---|
| X0A00 | Cause Details of Engine Start / READY ON Failure | The reason that engine did not start. | - |
| X0A01 | Cause Details of Engine Stop / READY OFF in IG ON | The reason that engine stalled or engine stopped. | - |
| X0A02 | Cause Details of Leave ACC ON / IG ON | The reason that vehicle power source turned off automatically. | - |
HINT:
Some items may not be displayed depending on the specifications of the vehicle.
SYMPTOM SIMULATION
Click here
How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT HINT:
Replace parts related to the wireless door lock control system and smart key system according to the inspection procedure...
Operation Check
OPERATION CHECK CHECK CUSTOMIZE PARAMETERS (a) The operation check below is based on the non-customized initial condition of the vehicle. Click here
CHECK PUSH-BUTTON START FUNCTION (a) Check the push-button start function: (1) Get into the vehicle while carrying the electrical key transmitter sub-assembly with the ignition switch off, check that the key indicator display is displayed when the clutch pedal is depressed...
Other information:
Toyota Yaris XP210 (2020-2024) Reapir and Service Manual: Installation
INSTALLATION CAUTION / NOTICE / HINT HINT: Use the same procedure for the RH side and LH side. The following procedure is for the LH side. PROCEDURE 1. INSTALL CURTAIN SHIELD AIRBAG ASSEMBLY NOTICE: When installing a curtain shield airbag assembly, have assistants hold it to prevent it from bending...
Toyota Yaris XP210 (2020-2024) Reapir and Service Manual: 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 part is faulty or not. HINT: Using the GTS to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts...
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Fuel-Filler Lid and Cap
WARNING
When removing the fuel-filler cap, loosen the cap slightly and wait for any hissing to stop, then remove it
Fuel spray is dangerous. Fuel can burn skin and eyes and cause illness if ingested. Fuel spray is released when there is pressure in the fuel tank and the fuel-filler cap is removed too quickly.
