Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information CEM-C1A9673

Condition
The stop lamp switch is located by the brake pedal. The switch is affected by the brake pedal's lever during braking. The Central electronic module (CEM) checks the brake lamp switch (BLS).
The diagnostic trouble code (DTC) is stored if the control module detects that:
- The brake lamp switch (BLS) is active even though the vehicle is locked from the outside. The DTC is first stored after 5 repetitions (unlocked/locked/unlocked) with active fault.
The control module's test for the diagnostic trouble code (DTC) starts in the event of:
- Powered central electronic module (CEM)

Note! The control module can only detect the fault once the test has been started and the diagnostic trouble code (DTC) is stored when the conditions are met.





Substitute value
- None.

Possible source
- The brake lamp switch (BLS) is incorrectly installed.
- The brake lamp switch (BLS) is damaged.
- The brake lamp switch (BLS) has jammed.

Fault symptom[s]
- Starting/Auto start does not work
- Cruise control/Does not engage
- Cruise control/Does not remain at set speed/disengages
- Cruise control/Disengagement does not work
- Starting/Engine does not start/Unsure when/at all times
- Tail light/Brake lights constantly lit
- Tail light/Brake light does not work
- Text window and warning symbol/Text message