Code No.B1950 Rain sensor error
Code No.B1951 Light sensor error
caution |
- Before replacing the ECU, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.
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DIAGNOSTIC FUNCTION
When the LDW-ECU detects a fault in the LDW-ECU (rain sensor or light sensor), diagnosis code No. B1950 or B1951 will be set.
JUDGEMENT CRITERIA
When the LDW-ECU detects a fault in the LDW-ECU (rain sensor or light sensor), it will determine that the system is defective.
PROBABLE CAUSES
- Malfunction of LDW-ECU (rain sensor)
- Malfunction of LDW-ECU (light sensor)
DIAGNOSIS PROCEDURE
STEP 1. Check whether the diagnosis code is set again.
Check if the diagnosis code No. B1950 or B1951 is set to LDW-ECU.
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(1)Erase the diagnosis code.
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(2)Turn the ignition switch from the LOCK (OFF) position to the ON position.
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(3)Check if the diagnosis code is set.
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Q.
Is the diagnosis code set?
Replace the LDW-ECU.
The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction).