Signal Missing

Signal missing

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 right camera module (RCM).





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 central electronic module (CEM) D connector.
The diagnostic trouble code indicates that communication between the central electronic module (CEM) and the right camera module (RCM) is inoperative. This could be due to a fault in the signal lead between the control modules or a damaged communication unit in one or all of the control modules.
Check the signal lead between the central electronic module (CEM) and the right camera module (RCM) for an open circuit or short circuit. Also check intermediate connectors.
Measure between:
- Central electronic module (CEM) #D41 (#41) and right camera module (RCM) #5.
Remedy as necessary.

Other information
- Connecting the breakout box Connecting the Breakout Box, Central Electronic Module (CEM)
- Signal specification Pinout Values and Diagnostic Parameters
- Change the right camera module (RCM), see: Door mirror, replacing Service and Repair
- Checking wiring and terminals Checking Wiring And Terminals

Was a fault detected?

Yes - Verification

No - Replacing the control module

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Replacing the control module
Try changing the right camera module (RCM).
Remedy as necessary.

Other information
- Change the right camera module (RCM), see: Door mirror, replacing Service and Repair


Continue - Verification

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Fault-tracing information
The right camera module (RCM) 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

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 right 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 - FAULT-TRACING FAILED

No - Attempt New Test

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FAULT-TRACING FAILED - FAULT-TRACING FAILED

Attempt New Test - Checking the function

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