Signal Too Low

Signal too low

Checking the function
The LEDs should flash three times whenever the Blind Spot Indication System (BLIS) is activated.
Switch on the ignition to check the functionality of the left LED.





Did the LED flash three times?

Yes - Fault-tracing information

No - Checking the wiring

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Checking the wiring








- Ignition off
Unplug the LED connector and check that the LED is intact. Also check the connector for contact resistance and corrosion.
Check the signal lead between the left camera module (LCM) and the #1 LED connector for shorting to ground.
Remedy as necessary.

Other information
- Signal specification Signal Description, Central Electronic Module (CEM)
- Change the light emitting diode, see: Door mirror, replacing Door Mirror, Replacing
- Checking wiring and terminals Checking Wiring And Terminals









Continue - Verification

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Fault-tracing information
The left camera module (LCM) has previously registered a fault but the fault no longer exists. The diagnostic trouble code (DTC) was probably generated by an intermittent fault. If the fault persists, fault-tracing according to this diagnostic trouble code (DTC) should be carried out even though no fault symptom can be detected. The seriousness of the fault is determined from case to case.
You can choose between continuing fault-tracing or ending it.

Would you like to continue?

Yes - Checking the wiring

No - No Fault Found

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Verification





Verification

Hint: After carrying out the repair, check that the fault has been remedied.








- Ignition off
- Reinstall the connectors, components etc.
- Ignition on

Did the left LED flash three times?

Yes - VERIFIED

No - VERIFICATION FAILED

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VERIFIED - FAULT FOUND

VERIFICATION FAILED - Fault-tracing information

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Fault-tracing information





Information

Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed.
Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.

Do you want to exit fault-tracing?

Yes - Exit fault-tracing

No - Attempt New Test

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Attempt New Test - Checking the wiring

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