Lighting System
LIGHTING (EXT): LIGHTING SYSTEM: B2424, B2425: Headlight Leveling Motor LH Communication Malfunction
B2424 - Headlight Leveling Motor LH Communication Malfunction
B2425 - Headlight Leveling Motor RH Communication Malfunction
DESCRIPTION
The AFS ECU (headlight swivel ECU assembly) receives a signal from each headlight leveling motor using LIN communication.
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
1. CHECK FOR DTC
(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
(b) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.
OK:
DTC B2424 or B2425 is not output.
NG -- CHECK HARNESS AND CONNECTOR (BATTERY - AFS ECU)
OK -- USE SIMULATION METHOD TO CHECK How To Proceed With Troubleshooting
2. CHECK HARNESS AND CONNECTOR (BATTERY - AFS ECU)
(a) Disconnect the A61 AFS ECU (headlight swivel ECU assembly) connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Text in Illustration
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (AFS ECU - BODY GROUND)
(a) Disconnect the A61 AFS ECU (headlight swivel ECU assembly) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
4. CHECK HARNESS AND CONNECTOR (AFS ECU - HEADLIGHT LEVELING MOTOR)
(a) Disconnect the A61 AFS ECU (headlight swivel ECU assembly) connector.
(b) Disconnect the A26 or A27 headlight leveling motor connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
LH Side (B2424)
RH Side (B2425)
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
5. INSPECT AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY)
(a) Reconnect the A61 AFS ECU (headlight swivel ECU assembly) connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
LH Side (B2424)
RH Side (B2425)
Text in Illustration
NG -- REPLACE AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY) Components
OK -- Continue to next step.
6. INSPECT HEADLIGHT UNIT
(a) Remove the headlight unit Components.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
LH Side (B2424)
RH Side (B2425)
Text in Illustration
NG -- REPLACE HEADLIGHT UNIT Components
OK -- Continue to next step.
7. REPLACE HEADLIGHT LEVELING MOTOR
(a) Temporarily replace the headlight leveling motor with a new or normally functioning one Components.
(b) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.
OK:
DTC B2424 or B2425 is not output.
NG -- REPLACE AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY) Components
OK -- END