Refer to "54.Brake Control 4A.Troubleshooting(ABS/ESC) diagnostic System Check - Brake Controls".
1) Inspect the front left wheel speed sensor. Is the result normal?
Refer to "4.Brakes 4Z.Brake Electrical Control front wheel speed sensor inspection".
Yes
=>Go to Wheel speed sensor wire harness and connector inspection.
No
Replace the front left wheel speed sensor.
Refer to "4.Brakes 4Z.Brake Electrical Control front wheel speed sensor removal".
Refer to "4.Brakes 4Z.Brake Electrical Control front wheel speed sensor installation".
1) Turn OFF the ignition switch.
2) Disconnect the EHCU harness connector (C13) and front left wheel speed sensor harness connectors (C25).
3) Inspect the wire harnesses and connectors for the following. Is the result normal?
Wire harness to be inspected
Inspection items
Refer to "RHD Anti-lock Brake" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "LHD Anti-lock Brake" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "RHD Electronic Stability Control" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "LHD Electronic Stability Control" in the ETM (wiring diagram). (Open using the ETM viewer.).
Yes
No
Repair the circuit as necessary.
Note
Refer to "4.Brakes 4Z.Brake Electrical Control EHCU removal".
Refer to "4.Brakes 4Z.Brake Electrical Control EHCU installation".
Refer to "4.Brakes 4Z.Brake Electrical Control EHCU setting".
Procedure completion
1) Clear the DTC with a scan tool.
2) Turn OFF the ignition switch.
3) Turn ON the ignition switch.
4) Observe the DTC information with a scan tool.