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 certification ECU.
The diagnosis information of the steering lock ECU is transmitted to the Techstream via the certification ECU as the steering lock ECU is not connected to the CAN communication system.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2781 | When either condition below is met: There is a steering lock motor drive power circuit malfunction. The on state of the lock and unlock position sensors is detected. | Steering lock actuator assembly (steering lock ECU) ECU aggregation box assembly (certification ECU) Harness or connector |
The steering lock ECU activates the steering lock motor using the power received 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 as the steering lock ECU is not connected to the CAN communication system.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2782 | There is an IGE power supply circuit malfunction. | Steering lock actuator assembly (steering lock ECU) Main body ECU (instrument panel junction block) Harness or connector |
Scheme 48
The certification ECU intermittently monitors the LIN communication bus between the components related to certification. DTC B2785 is output when a malfunction in the LIN communication bus between the components related to certification is detected continuously 3 times.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2785 | The certification ECU detects a malfunction in the LIN communication bus between components related to certification continuously 3 times. | ECU aggregation box assembly (certification ECU) Main body ECU (instrument panel junction block) ID code box Steering lock actuator assembly (steering lock ECU) Harness or connector |
Scheme 49
This DTC is stored when LIN communication between the certification ECU and steering lock actuator assembly (steering lock ECU) stops for 10 seconds or more.
| DTC Code | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2786 | Periodic transmission from the steering lock ECU stops for 10 seconds or more. | Steering lock actuator assembly (steering lock ECU) ECU aggregation box assembly (certification ECU) Harness or connector |
Scheme 50
The steering lock ECU determines the on (IG)/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 as the steering lock ECU is not connected to the CAN communication system.
| DTC Code | Detection Condition | Trouble Area |
|---|---|---|
| B2788 | Open or short in the IG2 signal circuit. | Steering lock actuator assembly (steering lock ECU) IGN fuse IG2 fuse IG2 relay Main body ECU Harness or connector |
Scheme 51
The main body ECU supplies the power to activate the motor of the steering lock ECU.
The diagnosis information of the steering lock ECU is transmitted to the Techstream via the certification ECU as the steering lock ECU is not connected to the CAN communication system.
Scheme 52
The steering lock ECU sends an unlock position signal to the main body ECU. On receiving the signal, the main body ECU permits 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 as the steering lock ECU is not connected to the CAN communication system.
Scheme 53
This circuit supplies the 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 as the steering lock ECU is not connected to the CAN communication system.
