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LIGHTING SYSTEM DIAGNOSTIC TROUBLE CODE CHART

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Table 1. Lighting System
DTC Code Detection Item Trouble Area See page
B1244 Light Sensor Circuit Malfunction

1. Automatic light control sensor

2. Harness or connector

3. Main body ECU

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B124A Automatic High Beam Mirror Inner rear view mirror assembly

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B124B Automatic High Beam System

1. CAN communication system

2. Inner rear view mirror assembly

3. AFS ECU (headlight swivel ECU assembly)

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B124C Automatic High Beam Camera Inner rear view mirror assembly

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B124D Lost Communication with AFS LIN

1. Inner rear view mirror assembly

2. Harness or connector

3. AFS ECU (headlight swivel ECU assembly)

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B2410 Headlight Swivel Motor LH Communication Malfunction

1. Headlight swivel motor LH

2. Harness or connector

3. AFS ECU

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B2411 Headlight Swivel Motor RH Communication Malfunction

1. Headlight swivel motor RH

2. Harness or connector

3. AFS ECU

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B2412 Headlight Swivel Motor LH Malfunction

1. Headlight swivel motor LH

2. Harness or connector

3. AFS ECU

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B2413 Headlight Swivel Motor RH Malfunction

1. Headlight swivel motor RH

2. Harness or connector

3. AFS ECU

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B2414 Steering Position Sensor Malfunction

1. Steering angle sensor

2. AFS ECU

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B2415 Vehicle Speed Sensor Malfunction

1. Skid control ECU

2. AFS ECU

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B2416 Height Control Sensor Malfunction

1. Rear height control sensor sub-assembly LH

2. Harness or connector

3. AFS ECU

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B2417 Headlight Beam Level Control Motor LH Malfunction

1. Headlight leveling motor LH

2. Harness or connector

3. AFS ECU

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B2418 Headlight Beam Level Control Motor RH Malfunction

1. Headlight leveling motor RH

2. Harness or connector

3. AFS ECU

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B2420 AFS ECU Malfunction 1. AFS ECU

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B2423 AFS ECU Installation Error 1. AFS ECU

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B2424 Headlight Leveling Motor LH Communication Malfunction

1. Headlight leveling motor LH

2. Harness or connector

3. AFS ECU

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B2425 Headlight Leveling Motor RH Communication Malfunction

1. Headlight leveling motor RH

2. Harness or connector

3. AFS ECU

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B2427 CAN Communication Malfunction

1. CAN communication system

2. AFS ECU

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B2450 Initialization has not been Performed 1. AFS ECU

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B2452 Height Control Sensor Data Out of Range When Initializing

1. Vehicle condition when initializing

2. AFS ECU

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Note:

  • Initialize the AFS ECU after the vehicle height changes due to replacement of the suspension or after performing such operations as removal and reinstallation or replacement of the rear height control sensor sub-assembly LH.


  • When the AFS ECU is replaced, the initialization is also necessary.