DTC B2788: IG2 Signal Malfunction: Description
The steering lock ECU (steering lock actuator assembly) receives power from the IG2 relay. When the voltage value indicated by the IG signal from the certification ECU (smart key ECU assembly) equals to the voltage that is applied to the steering lock ECU (steering lock actuator assembly), the steering wheel will be unlocked. The steering lock ECU (steering lock actuator assembly) will not lock the steering wheel when power from the IG2 relay is present. This prevents the steering wheel from being locked while the vehicle is moving.
The steering lock ECU (steering lock actuator assembly) determines the on/off status of the engine switch through the IG2 signal circuit.
The diagnosis information of the steering lock ECU (steering lock actuator assembly) is transmitted to the Techstream via the certification ECU (smart key ECU assembly) as the steering lock ECU (steering lock actuator assembly) is not connected to the CAN communication system.
| DTC No. | DTC Detection Condition | Trouble Area |
|---|---|---|
| B2788 | Different information is obtained from IG2 signals received directly from the IG2 circuit, and from IG2 signals sent via LIN communication for 1 second. |
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