B2424
LIGHTING: LIGHTING SYSTEM: B2424: Headlight Leveling Motor LH Communication Malfunction
DTC B2424 - Headlight Leveling Motor LH Communication Malfunction
DTC 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
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 B2 and B12 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. CHECK HEADLIGHT ASSEMBLY
(a) Disconnect the B2 and B12 motor connectors.
(b) Disconnect the leveling motor connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
for LH
for RH
NG -- REPLACE HEADLIGHT ASSEMBLY
OK -- Continue to next step.
6. CHECK HEADLIGHT LEVELING MOTOR (OPERATION)
(a) Temporarily replace the headlight leveling motor with a new or normally functioning one Disassembly.
(b) Check for DTC Reading and Clearing Diagnostic Trouble Codes.
OK:
DTC B2424 or B2425 output does not occur.
NG -- REPLACE AFS ECU
OK -- END (REPLACE HEADLIGHT LEVELING MOTOR)