DTC B1A49
Precautions: Precautions for Diagnosing Trouble · Precautions for Control Systems · General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detecting condition | Trouble area |
|---|---|
|
B1A49: Wheel Speed Sensor Wrong Data TPMS control module receives invalid wheel speed signal from ESP® control module for specified time. |
•Wheel speed sensor
•TPMS control module •Tire pressure sensor No.1, No.2, No.3 and/or No.4 |
DTC Confirmation Procedure
WARNING:
If you do not select a suitable route and take proper precautions when performing a road test, an accident can occur.
•Select a level road with no traffic to minimize the risk of accident.
•Perform the test extremely carefully.
•Perform the road test with 2 persons, a driver and a tester.
•Perform the test extremely carefully.
•Perform the road test with 2 persons, a driver and a tester.
1)Set ignition “OFF” and leave ignition “OFF” for 20 minutes or more.
2)Drive vehicle at 25 km/h (16 mile/h) or more for 10 minutes or more on paved road and winding road as much as possible.
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
DTC check
1)Check DTC in ESP® control module.
Is there any DTC(s) detected?
|
Go to troubleshooting for applicable DTC.
|
Go to Step 2.
|
| 2 |
DTC check
Is DTC B1A20, B1A21, B1A22 or B1A23 detected?
|
Go to troubleshooting for applicable DTC.
|
Replace TPMS control module and recheck DTC.
|