DESCRIPTION
The steering lock ECU and steering lock actuator assembly are supplied as a unit.
The steering lock ECU detects the steering lock position through the signals from the lock and unlock position sensors.
The steering lock ECU activates the steering lock motor based on permission signals from the main body ECU and the certification ECU (smart key ECU assembly).
The diagnosis information of the steering lock ECU is transmitted to the Techstream via the certification ECU (smart key ECU assembly) as the steering lock ECU is not connected to the CAN communication system.
| DTC Code | Detection Condition | Trouble Area |
|---|---|---|
| B2781 | When either condition below is met: A steering lock motor drive power circuit malfunction. The ON condition for both the lock and unlock position sensors is detected. | Steering lock actuator assembly (steering lock ECU) Certification ECU (smart key ECU assembly) Harness or connector of LIN bus line |
The steering lock ECU activates the steering lock motor by the power from the main body ECU through the IGE circuit. This prevents the steering from being locked while the vehicle is moving.
The diagnosis information of the steering lock ECU is transmitted to the Techstream via the certification ECU (smart key ECU assembly) as the steering lock ECU is not connected to the CAN communication system.
| DTC Code | Detection Condition | Trouble Area |
|---|---|---|
| B2782 | An IGE power supply circuit malfunction. | Steering lock actuator assembly (steering lock ECU) Main body ECU Harness or connector |
Scheme 79
The steering lock ECU determines the on/off status of the engine switch through the IG2 signal circuit.
After receiving an integration relay (IG2 relay) on signal, the steering lock ECU determines that the vehicle is moving.
The steering lock ECU does not lock the steering when it receives the integration relay (IG2 relay) on signal. This prevents the steering from being locked while the vehicle is moving.
The diagnosis information of the steering lock ECU is transmitted to the Techstream via the certification ECU (smart key ECU assembly) as the steering lock ECU is not connected to the CAN communication system.
| DTC Code | Detection Condition | Trouble Area |
|---|---|---|
| B2788 | An open or short in the IG2 signal circuit. | Steering lock actuator assembly (steering lock ECU) IGN fuse IG2 MAIN fuse Integration relay (IG2 relay) Main body ECU Harness or connector |
Scheme 80
The main body ECU supplies the power to activate the motor of the steering lock actuator assembly.
The diagnosis information of the steering lock ECU is transmitted to the Techstream via the certification ECU (smart key ECU assembly) as the steering lock ECU is not connected to the CAN communication system.
Scheme 81
The steering lock ECU sends an unlock position signal to the main body ECU. On receiving the signal, the main body ECU permits an engine start. This prevents the engine from being started with the steering locked.
The diagnosis information of the steering lock ECU is transmitted to the Techstream via the certification ECU (smart key ECU assembly) as the steering lock ECU is not connected to the CAN communication system.
Scheme 82
This circuit supplies power source voltage from the battery to terminal B of the steering lock ECU.
The diagnosis information of the steering lock ECU is transmitted to the Techstream via the certification ECU (smart key ECU assembly) as the steering lock ECU is not connected to the CAN communication system.
