B2432

NETWORKING: LIN COMMUNICATION SYSTEM: B2432: Lost Communication with Automatic High Beam Sensor
B2432 - Lost Communication with Automatic High Beam Sensor

DESCRIPTION

The DTC is stored when the AFS ECU (headlight swivel computer assembly) detects malfunctions in the LIN communication system.





WIRING DIAGRAM





INSPECTION PROCEDURE

CAUTION:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1. CLEAR DTC

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

NEXT -- Continue to next step.

2. CHECK FOR DTC

(a) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.

Result





HINT
When both B2432 and B124D are output at the same time, troubleshoot B124D first.

C -- USE SIMULATION METHOD TO CHECK Initial Inspection and Diagnostic Overview

B -- GO TO DIAGNOSTIC TROUBLE CODE CHART LIN Communication System
A -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (AFS ECU (HEADLIGHT SWIVEL COMPUTER ASSEMBLY) - INNER REAR VIEW MIRROR ASSEMBLY)

(a) Disconnect the A45 AFS ECU (headlight swivel computer assembly) connector





(b) Disconnect the T2 inner rear view mirror assembly connector.

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

Standard Resistance (Check for Open):





Standard Resistance (Check for Short):





Text in Illustration





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

4. INSPECT AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY)

(a) Reconnect the A45 AFS ECU (headlight swivel computer assembly) connector.

(b) Connect an oscilloscope to the T2 inner rear view mirror assembly connector.

(c) Check the waveform.





OK:





Text in Illustration





NG -- REPLACE AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY) Removal

OK -- REPLACE INNER REAR VIEW MIRROR ASSEMBLY Removal