B2425

LIGHTING: LIGHTING SYSTEM: B2424,B2425: Headlight Leveling Motor LH Communication Malfunction
B2425 - Headlight Leveling Motor RH Communication Malfunction

DESCRIPTION

The AFS ECU receives a signal from the headlight swivel motor using LIN communication.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOR DTC

(a) Clear the DTC Reading and Clearing Diagnostic Trouble Codes.

(b) Check for DTC Reading and Clearing Diagnostic Trouble Codes.

OK:

DTC B2424 or B2425 output does not occur.

NG -- READ VALUE USING TECHSTREAM (AFS ECU)

OK -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting

2. READ VALUE USING TECHSTREAM (AFS ECU)

(a) Using the Techstream, read the Data List.

AFS





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (AFS ECU - BODY GROUND)

(a) Disconnect the A37 ECU connector.





(b) Measure the resistance according to the value(s) in the table below.

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (AFS ECU - HEADLIGHT)





(a) Disconnect the A37 ECU connector.

(b) Disconnect the B1 and B11 motor connectors.

(c) Measure the resistance according to the value(s) in the table below.

Standard resistance:

for LH
for RH










NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

5. INSPECT HEADLIGHT ASSEMBLY





(a) Remove the headlight Removalfor HID Headlight, Removalfor LED Headlight).

(b) Disconnect the motor connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard resistance:

for LH
for RH










Result





C -- REPLACE HEADLIGHT ASSEMBLY Removal

B -- REPLACE HEADLIGHT ASSEMBLY Removal
A -- Continue to next step.

6. CHECK HEADLIGHT LEVELING MOTOR (OPERATION)

(a) Temporarily replace the headlight leveling motor with a new or normally functioning one.

HINT
* for HID Headlight Disassembly.
* for LED Headlight Disassembly.

(b) Check for DTC Reading and Clearing Diagnostic Trouble Codes.

OK:

DTC B2424 or B2425 output does not occur.

Result





C -- REPLACE AFS ECU Removal

B -- END (REPLACE HEADLIGHT LEVELING MOTOR) Disassembly

A -- END (REPLACE HEADLIGHT LEVELING MOTOR) Disassembly