Signal Too Low. Permanent Fault

Signal too low. Permanent fault

Checking the cable




- Ignition off.
Check the cable between the central electronic module (CEM) terminal #17D and the hazard warning signal flasher switch terminal #1 (3/6). Check for a short-circuit to ground.
Remedy as necessary.

Other information:
- For information about the central electronic module (CEM) connector, see Central electronic module (CEM), replacing Central Electronic Module (CEM), Replacing
- To connect the breakout box, see Connecting the breakout box Connecting the Breakout Box, Central Electronic Module (CEM)
- For information about signals, see Signal specification Pinout Values and Diagnostic Parameters
- Checking wiring and terminals Checking Wiring And Terminals.













Were any faults found?

Yes - Verification

No - Checking overtemperature

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Checking overtemperature
Turn on the hazard warning signal flasher to see if the switch works.
If the switch does not work, the fault may be due to overheating. Wait approximately 10 min and check whether the fault was due to overheating.

Does the switch work?

Yes - Verification

No - hazard warning signal flasher

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Replacing switch, hazard warning signal flasher
Replace the switch for the hazard warning signal flasher (3/6). See Switch hazard warning signal flasher, replacing Switch, Hazard Warning Signal Flasher, Replacing.


Continue - Verification

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Verification




Verification

Verification

Hint: After the repair it is necessary to check that the fault has been rectified.








- Ignition off.
- Connect the connectors, install the components, etc.
- Ignition on.
Read the diagnostic trouble codes.
If diagnostic trouble code has changed to intermittent status this indicates that the fault is no longer activated.





Is the diagnostic trouble code intermittent?

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 - No Fault Found

Attempt New Test - Checking the cable

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