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 (2020-2024) 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. The steering lock ECU (steering lock actuator or upper bracket assembly) communicates with the GTS through the certification ECU (smart key ECU assembly) which uses CAN communication...
Toyota Yaris XP210 (2020-2024) Owner's Manual: Tire Pressure Monitoring System (If equipped)
The Tire Pressure Monitoring System (TPMS) monitors the air pressure of all four tires. If the air pressure of one or more tires is too low, the system warns the driver by indicating the tire pressure monitoring system warning light in the combination meter and operating a beep sound...
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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
