Toyota Venza: HL AutoLeveling ECU Failure (B2420)

Toyota Venza Service Manual / Lighting (ext) / Lighting System / HL AutoLeveling ECU Failure (B2420)

DESCRIPTION

When the headlight leveling ECU assembly detects a malfunction in itself, this DTC is stored.

DTC No.	DTC Detecting Condition	Trouble Area
B2420	Malfunction of headlight leveling ECU assembly	Headlight leveling ECU assembly

CAUTION / NOTICE / HINT

NOTICE:

If the headlight leveling ECU assembly has been replaced, initialization of the headlight leveling ECU assembly is necessary (See page ).

PROCEDURE

1.	CHECK FOR DTC

(a) Clear the DTCs (See page ).

(b) Check for DTCs (See page ).

OK:

DTC B2420 is not output.

USE SIMULATION METHOD TO CHECK

REPLACE HEADLIGHT LEVELING ECU ASSEMBLY

Initialization has not been Performed (B2450)

DESCRIPTION The headlight leveling ECU assembly stores this DTC if initialization has not been performed after the ECU was replaced. DTC No. DTC Detecting Condition ...

Rear Height Control Sensor (B241A)

DESCRIPTION The headlight leveling ECU assembly receives signals indicating the height of the vehicle from the rear height control sensor sub-assembly RH. DTC No. DTC Detecti ...

Other materials about Toyota Venza:

ECM Communication Stop Mode
DESCRIPTION Detection Item Symptom Trouble Area ECM Communication Stop Mode "Engine" and "ECT" are not displayed on "CAN Bus Check" screen of the Techs ...

Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART HINT: If a trouble code is displayed during the DTC check, inspect the trouble areas listed below for that code. For details of the code, refer to the following "See page". Power back door system DTC C ...

Cold Start Ignition Timing Performance (P050B)
DESCRIPTION This monitor will run when the engine is started at an engine coolant temperature of -10 to 50°C (14 to 122°F). The DTC is stored after the engine idles for 13 seconds (2 trip detection logic). The DTC is designed to monitor the ignition ti ...