1) Connect the scan tool.
2) Turn ON the ignition switch.
3) Observe the EHCU DTC information with a scan tool. Is a DTC set?
Yes
Go to the applicable DTC diagnosis.
No
=>Go to Steering angle sensor harness connector inspection.
1) Inspect for poor connections at the steering angle sensor harness connector (pins 2 and 3 of B33). Is the connection status normal?
Refer to "RHD Controller Area Network (Central Gateway C/U (4JJ3 without DPD, RZ4E))" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "RHD Controller Area Network (Central Gateway C/U (4JJ3 with DPD))" in the ETM (wiring diagram). (Open using the ETM viewer.).
Refer to "LHD Controller Area Network (Central Gateway C/U)" in the ETM (wiring diagram). (Open using the ETM viewer.).
Yes
=>Go to Steering angle sensor replacement.
No
Repair the connections as necessary.
Note
Refer to "6.Steering 6Z.Steering Electrical Control steering angle sensor removal".
Refer to "6.Steering 6Z.Steering Electrical Control steering angle sensor installation".
Refer to "6.Steering 6Z.Steering Electrical Control steering angle sensor setting".
Procedure completion
1) Clear the DTC with a scan tool.
2) Turn OFF the ignition switch for 30 seconds or more.
3) Turn ON the ignition switch.
4) Observe the DTC information with a scan tool.