DESCRIPTION
INSPECTION PROCEDURE
CHECK FOR DTC
DTC B2420 AFS ECU Malfunction
DTC B2420 HL AutoLeveling ECU Failure
DESCRIPTION
When the headlight leveling ECU*1 or headlight swivel ECU*2 detects a malfunction in itself, this DTC is stored.
*1: w/ Static Headlight Auto Leveling
*2: w/ Dynamic Headlight Auto Leveling
| DTC Code | DTC Detection Condition | Trouble Area |
| B2420 | A malfunction in the headlight leveling ECU. (w/ Static Headlight Auto Leveling)
A malfunction in the headlight swivel ECU. (w/ Dynamic Headlight Auto Leveling)
| Headlight leveling ECU assembly (w/ Static Headlight Auto Leveling)
Headlight swivel ECU assembly (w/ Dynamic Headlight Auto Leveling)
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INSPECTION PROCEDURE
- After replacing the headlight leveling ECU*1 or headlight swivel ECU*2, initialization of the ECU is necessary (except w/ Dynamic Headlight Auto Leveling) ().
*1: w/ Static Headlight Auto Leveling
*2: w/ Dynamic Headlight Auto Leveling
Check for DTCs ().
- OK:
- DTC B2420 output does not occur.
Result| Result | Proceed to |
| OK | A |
| NG (w/ Static Headlight Auto Leveling) | B |
| NG (w/ Dynamic Headlight Auto Leveling) (for LHD) | C |
| NG (w/ Dynamic Headlight Auto Leveling) (for RHD) | D |
| | REPLACE HEADLIGHT LEVELING ECU ASSEMBLY ()
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| | REPLACE HEADLIGHT SWIVEL ECU ASSEMBLY ()
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| | REPLACE HEADLIGHT SWIVEL ECU ASSEMBLY ()
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| A | |
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| USE SIMULATION METHOD TO CHECK ()
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