DESCRIPTION
When the headlight leveling ECU assembly detects a malfunction in itself, this DTC is stored.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| B2420 | HL AutoLeveling ECU Failure | Malfunction of headlight leveling ECU assembly | Headlight leveling ECU assembly |
The headlight leveling ECU assembly stores this DTC if an internal error related to the CAN communication system is detected.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| U1000 | CAN Communication Failure (Message Registry) | CAN communication failure | Headlight leveling ECU assembly |
These DTCs are stored when the CAN communication system is malfunctioning.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| U0100 | Lost Communication with ECM/PCM "A" | Lost communication with ECM | CAN communication system |
| U0129 | Lost Communication with Brake System Control Module | Lost communication with brake actuator assembly (skid control ECU) | CAN communication system |
| U0142 | Lost Communication with Body Control Module "B" | Lost communication with main body ECU (multiplex network body ECU) | CAN communication system |
This DTC is stored if the headlight leveling ECU assembly for another destination is installed on the vehicle.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| B2453 | Variation Error | The headlight leveling ECU assembly for another destination is installed on the vehicle | Headlight leveling ECU assembly |
The headlight leveling ECU assembly stores this DTC if initialization has not been performed after the ECU was replaced.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| B2450 | Initialization has not been Performed | Initialization of the headlight leveling ECU assembly has not been performed | Headlight leveling ECU assembly |
The headlight leveling ECU assembly stores this DTC if the vehicle specifications have not been stored in the ECU.
HINT
The vehicle specifications are stored in the ECU at the factory.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| B2451 | Vehicle Specifications have not been Stored | Vehicle specifications have not been stored | Headlight leveling ECU assembly |
The headlight leveling ECU assembly stores this DTC if the sensor value received from the height control sensor is out of range when performing initialization of the headlight leveling ECU assembly; for example, the vehicle is not level or being jacked up.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| B2452 | Height Control Sensor Data Out of Range When Initializing | Rear height control sensor sub-assembly value is out of range when initializing | Vehicle condition when initializing Headlight leveling ECU assembly |
The headlight leveling ECU assembly receives signals indicating the front right and front left wheel speed from the brake actuator assembly (skid control ECU) using CAN communication.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| B2415 | Vehicle Speed Sensor Malfunction | Malfunction in vehicle speed signal | Brake actuator assembly (skid control ECU) Headlight leveling ECU assembly |
Scheme 114
The headlight leveling ECU assembly receives signals indicating the height of the vehicle from the rear height control sensor sub-assembly.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| B241A | Rear Height Control Sensor | Malfunction in rear height control sensor sub-assembly Open or short in rear height control sensor sub-assembly circuit | Rear height control sensor sub-assembly Harness or connector Headlight leveling ECU assembly |
Scheme 115
This DTC is stored when the headlight leveling ECU assembly detects a malfunction in the rear height control sensor sub-assembly power source or rear height control sensor sub-assembly.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| B2416 | Height Control Sensor Malfunction | Malfunction in rear height control sensor sub-assembly Open or short in rear height control sensor sub-assembly power source circuit | Rear height control sensor sub-assembly Harness or connector Headlight leveling ECU assembly |
Scheme 116
This circuit detects the state of the engine switch, and sends it to the headlight leveling ECU assembly.
Scheme 117
The headlight leveling ECU assembly actuates the headlight leveling motors according to vehicle conditions.
Scheme 118
See also:
• DIAGNOSIS SYSTEM [04/2013 - ]