Toyota Yaris: Vehicle Stability Control System / How To Proceed With Troubleshooting

Toyota Yaris XP210 (2020-2026) Reapir and Service Manual / Brake / Brake Control / Dynamic Control Systems / Vehicle Stability Control System / How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

*: Use the GTS.

PROCEDURE

1.	VEHICLE BROUGHT TO WORKSHOP

2.	CUSTOMER PROBLEM ANALYSIS

(a) Interview the customer and confirm the problem.

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3.	CHECK DTC AND FREEZE FRAME DATA*

(a) Check and record DTCs and Freeze Frame Data.

(1) Check and record DTCs.

Chassis > Brake > Trouble Codes

(2) Check and record Freeze Frame Data.

(b) Clear the DTCs and Freeze Frame Data.

Chassis > Brake > Clear DTCs

(1) Reconfirm the DTCs based on the recorded DTCs and Freeze Frame Data.

Chassis > Brake > Trouble Codes

HINT:

When CAN communication system DTCs are output, repair the CAN communication system first.
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If DTCs related to momentary interruptions are output, perform troubleshooting for those DTCs first.
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If the GTS cannot communicate with the skid control ECU (brake actuator assembly), inspect the CAN communication system.
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If there is no response from the skid control ECU (brake actuator assembly), inspect the supply power circuit.
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(d) Check the Vehicle Control History.

Result	Proceed to
DTCs are not output. (Problem symptom occurs.)	A
DTCs are output.	B
DTCs are not output. (Problem symptom does not occur.)	C
DTCs are not output. (Vehicle control history occurs.)	D

PROBLEM SYMPTOMS TABLE

REPAIR CIRCUITS INDICATED BY OUTPUT DTCS*

USE SIMULATION METHOD TO CHECK

PERFORM TROUBLESHOOTING AND REPAIR REGARDING VEHICLE CONTROL HISTORY*

System Diagram

S..

Check For Intermittent Problems

CHECK FOR INTERMITTENT PROBLEMS CHECK FOR INTERMITTENT PROBLEMS HINT: A momentary interruption (open circuit) in the connectors and/or wire harness between the sensors and ECUs can be detected using the Data List function of the GTS...

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