Toyota Yaris: Lin Communication System / How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
- Use the following procedure to troubleshoot the LIN communication system.
- *: Use the GTS.
PROCEDURE
| 1. | VEHICLE BROUGHT TO WORKSHOP |
|
| 2. | CUSTOMER PROBLEM ANALYSIS |
HINT:
- In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
- Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
- The following 5 items are important points for problem analysis:
| What | Vehicle model, system name |
| When | Date, time, occurrence frequency |
| Where | Road conditions |
| Under what conditions? | Driving conditions, weather conditions |
| How did it happen? | Problem symptoms |
|
| 3. | PRE-CHECK |
(a) Measure the auxiliary battery voltage with the ignition switch off.
Standard Voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step.
(b) Check the fuses and relays.
(c) Check the connectors and terminals to make sure that there are no abnormalities such as a loose connection or deformation.
|
| 4. | INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* |
(a) Using the GTS, check for CAN communication system DTCs.
Click here
| Result | Proceed to |
|---|---|
| CAN DTCs are not output | A |
| CAN DTCs are output | B |
| B |
 | GO TO CAN COMMUNICATION SYSTEM |
|
| 5. | INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM* |
(a) Using the GTS, check for LIN communication system DTCs.
Click here
| Result | Proceed to |
|---|---|
| LIN DTCs are not output | A |
| LIN DTCs are output | B |
| B |
 | GO TO DIAGNOSTIC TROUBLE CODE CHART |
|
| 6. | OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Terminals of ECU
Click here
(b) Data List / Active Test
Click here
|
| 7. | REPAIR OR REPLACE |
|
| 8. | CONFIRMATION TEST |
| NEXT |
 | END |
System Description
SYSTEM DESCRIPTION LIN COMMUNICATION SYSTEM DESCRIPTION The LIN communication system is used for communication between the components in the tables below...
Terminals Of Ecu
TERMINALS OF ECU CHECK POWER DISTRIBUTION BOX ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
*1 POWER DISTRIBUTION BOX ASSEMBLY *2 MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) (a) Remove main body ECU (multiplex network body ECU)...
Other information:
Toyota Yaris XP210 (2020-2025) Reapir and Service Manual: Installation
INSTALLATION PROCEDURE 1. INSTALL AIR CONDITIONING CONTROL ASSEMBLY (a) Connect the connector. (b) Engage the clips to install the air conditioning control assembly. 2. INSTALL LOWER INSTRUMENT PANEL FINISH PANEL ASSEMBLY Click here 3...
Toyota Yaris XP210 (2020-2025) Reapir and Service Manual: Components
COMPONENTS ILLUSTRATION *1 FRONT BUMPER ASSEMBLY *2 PIN HOLD CLIP ILLUSTRATION *A w/ Pre-collision System - - *1 NO. 3 ENGINE ROOM WIRE *2 MILLIMETER WAVE RADAR SENSOR ASSEMBLY N*m (kgf*cm, ft.*lbf): Specified torque - - ILLUSTRATION *1 FOG LIGHT COVER LH *2 FOG LIGHT COVER RH *3 FOG LIGHT ASSEMBLY LH *4 FOG LIGHT ASSEMBLY RH *5 FRONT BUMPER HOLE COVER *6 HOOD TO FRONT END PANEL SEAL *7 LOWER RADIATOR GRILLE SUB-ASSEMBLY *8 RADIATOR GRILLE SIDE MOULDING LH *9 RADIATOR GRILLE SIDE MOULDING RH *10 RADIATOR GRILLE EMBLEM ASSEMBLY *11 FRONT BUMPER EXTENSION MOUNTING BRACKET - - ILLUSTRATION *1 FRONT BUMPER ENERGY ABSORBER *2 FRONT BUMPER SIDE RETAINER RH *3 RADIATOR UPPER AIR GUIDE PLATE *4 HEADLIGHT ASSEMBLY RH *5 HEADLIGHT ASSEMBLY LH *6 FRONT BUMPER SIDE RETAINER LH *7 FRONT BUMPER REINFORCEMENT *8 THERMISTOR ASSEMBLY *9 COOL AIR INTAKE DUCT - - N*m (kgf*cm, ft...
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Refueling
Before refueling, close all the doors, windows, and the liftgate/trunk lid, and switch the ignition OFF.
To open the fuel-filler lid, pull the remote fuel-filler lid release.
