DESCRIPTION
The DTC is stored when the main body ECU (driver side junction block assembly) detects malfunctions in the LIN communication system.
DTC No. |
DTC Detection Condition |
Trouble Area |
---|---|---|
B124D |
Malfunction in LIN communication system |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
First perform the communication function inspections in How to Proceed with Troubleshooting to confirm that there are no CAN communication malfunctions before troubleshooting this symptom.
PROCEDURE
1. |
CHECK FOR DTC |
(a) Clear the DTCs (See page ).
(b) Check for DTCs (See page ).
OK:
DTC B124D is not output.
OK | ![]() |
USE SIMULATION METHOD TO CHECK |
|
2. |
CHECK HARNESS AND CONNECTOR (AFS ECU - INNER REAR VIEW MIRROR ASSEMBLY) |
(a) Disconnect the D44 AFS ECU (headlight swivel ECU assembly) connector.
(b) Disconnect the P12 inner rear view mirror assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
D44-10 (SMR) - P12-3 (LIN) |
Always |
Below 1 Ω |
P12-3 (LIN) - Body ground |
Always |
10 kΩ or higher |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. |
INSPECT AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY) |
(a) Reconnect the D44 AFS ECU (headlight swivel ECU assembly) connector.
(b) Connect an oscilloscope to the P12 inner rear view mirror assembly connector. |
|
(c) Check the waveform. OK:
|
|
OK | ![]() |
REPLACE INNER REAR VIEW MIRROR ASSEMBLY |
NG | ![]() |
REPLACE AFS ECU (HEADLIGHT SWIVEL ECU ASSEMBLY) |
Lost Communication with Automatic High Beam Sensor (B2432)
DESCRIPTION
The DTC is stored when the AFS ECU (headlight swivel ECU assembly) detects malfunctions
in the LIN communication system.
DTC No.
DTC Detection Condition
Trouble Area
B2432
Malfunction ...
Installation
INSTALLATION
PROCEDURE
1. INSTALL STEERING INTERMEDIATE SHAFT ASSEMBLY
(a) Align the matchmarks on the steering intermediate shaft assembly
and the steering column assembly.
Text in Illustration
*1
Matc ...
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms.
If multiple suspected areas are listed, the potential causes of the symptoms
are listed in order of probability in the "Suspected Area" ...