Toyota Yaris: Cxpi Communication System / How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
- Use these procedures to troubleshoot the CXPI communication system.
- *: Use the GTS.
PROCEDURE
| 1. | VEHICLE BROUGHT TO WORKSHOP |
|
| 2. | INSPECT AUXILIARY BATTERY VOLTAGE |
(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.
|
| 3. | CHECK POWER INTEGRATION SYSTEM* |
(a) Use the GTS to check if the power integration system is functioning normally.
Click here
| Result | Proceed to |
|---|---|
| Power integration system DTCs are not output | A |
| Power integration system DTCs are output | B |
| B |
 | GO TO POWER INTEGRATION SYSTEM |
|
| 4. | CHECK FOR DTC* |
(a) Check for DTCs and make a note of any codes that are output.
Click here
(b) Clear the DTCs.
Body Electrical > Main Body > Clear DTCs(c) Recheck for DTCs.
Body Electrical > Main Body > Trouble Codes| DTCs output |
 | GO TO DIAGNOSTIC TROUBLE CODE CHART |
|
| 5. | OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Data List / Active Test
Click here
(b) Terminals of ECU
Click here
|
| 6. | ADJUST, REPAIR OR REPLACE |
| NEXT |
 | END |
System Description
SYSTEM DESCRIPTION CXPI COMMUNICATION SYSTEM DESCRIPTION The multiplex communication system [CXPI] is used for communication systems between body system components...
Terminals Of Ecu
TERMINALS OF ECU NOTICE:
After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal...
Other information:
Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Lost Communication With ECM/PCM "A" Missing Message (U010087,U012987,U014087)
DESCRIPTION These DTCs are stored when a malfunction occurs in the CAN communication circuit. DTC No. Detection Item DTC Detection Condition Trouble Area U010087 Lost Communication With ECM/PCM "A" Missing Message When the stereo component equalizer assembly detects a CAN communication malfunction in the engine system for 1 second or more continuously 3 seconds after the ignition switch is turned to ON* CAN communication system U012987 Lost Communication With Brake System Control Module Missing Message When the stereo component equalizer assembly detects a CAN communication malfunction in the brake system for 1 second or more continuously 3 seconds after the ignition switch is turned to ON* CAN communication system U014087 Lost Communication with Body Control Module Missing Message When the stereo component equalizer assembly detects a CAN communication malfunction in the main body ECU for 3 seconds or more continuously 3 seconds after the ignition switch is turned to ON* CAN communication system HINT: *: Malfunction monitoring is not performed under the following conditions, in order to prevent erroneous detection...
Toyota Yaris XP210 (2020-2026) Reapir and Service Manual: Customize Parameters
CUSTOMIZE PARAMETERS CUSTOMIZE SMART KEY SYSTEM (for Start Function) NOTICE: When the customer requests a change in a function, first make sure that the function can be customized. Record the current settings before customizing. HINT: The following items can be customized...
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Liftgate/Trunk Lid
WARNING
Never allow a person to ride in the luggage compartment/trunk
Allowing a person to ride in the luggage compartment/trunk is dangerous. The person in the luggage compartment/trunk could be seriously injured or killed during sudden braking or a collision.
Do not drive with the liftgate/trunk lid open
