Land Cruiser URJ200 URJ202 GRJ200 VDJ200 - LIGHTING EXT
CHECK HARNESS AND CONNECTOR (HEADLIGHT ECU - INNER REAR VIEW MIRROR)
CHECK INNER REAR VIEW MIRROR ASSEMBLY
DTC B124D Lost Communication with AFS LIN
DTC B2432 Lost Communication with Automatic High Beam Sensor
DESCRIPTION
DTC B124D is stored when the main body ECU detects malfunctions in the LIN communication system.
DTC B2432 is stored when the Headlight swivel ECU detects malfunctions in the LIN communication system.
| DTC Code | DTC Detection Condition | Trouble Area |
| B124D | Malfunction in LIN communication system | Inner rear view mirror assembly Harness or connector Headlight swivel ECU*1 Headlight leveling ECU*2 |
| B2432 | Malfunction in LIN communication system | Inner rear view mirror assembly Harness or connector Headlight swivel ECU*1 Headlight leveling ECU*2 |
*1: w/ Dynamic Headlight Auto Leveling
*2: w/ Static Headlight Auto Leveling
WIRING DIAGRAM
INSPECTION PROCEDURE
- 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.
| 1.CHECK FOR DTC |
Clear the DTCs ().
Check for DTCs ().
- OK:
- DTC B124D or B2432 is not output.
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| OK | ||
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| 2.CHECK HARNESS AND CONNECTOR (HEADLIGHT ECU - INNER REAR VIEW MIRROR) |
Disconnect the E101*1 or E109*2 ECU connector.
*1: w/ Dynamic Headlight Auto Leveling
*2: w/ Static Headlight Auto Leveling
Disconnect the R16 mirror connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
w/ Dynamic Headlight Auto Leveling Tester Connection Condition Specified Condition E101-11 (RH+) - R16-10 (LIN) Always Below 1 Ω E101-11 (RH+) - Body ground Always 10 kΩ or higher w/ Static Headlight Auto Leveling Tester Connection Condition Specified Condition E109-17 (RHT) - R16-10 (LIN) Always Below 1 Ω E109-17 (RHT) - Body ground Always 10 kΩ or higher
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| OK | |
| 3.CHECK INNER REAR VIEW MIRROR ASSEMBLY |
Temporarily replace the inner rear view mirror with a new or normally functioning one ().
Check for DTCs ().
- OK:
- DTC B124D or B2432 is not output.
| Result | Proceed to |
| OK | A |
| NG (for LHD, w/ Dynamic Headlight Auto Leveling) | B |
| NG (for RHD, w/ Dynamic Headlight Auto Leveling) | C |
| NG (for LHD, w/ Static Headlight Auto Leveling) | D |
| NG (for RHD, w/ Static Headlight Auto Leveling) | E |
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| A | ||
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