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Home >> Mazda >> 2017 >> 6 Touring, Automatic Trans >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Communication Devices >> On-Board Diagnostic - Front Body Control Module (FBCM) >> DTC U0338-09; Error Light Switch Signal Received From Start Stop Unit >> Notes
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DTC U0338-09; Error Light Switch Signal Received From Start Stop Unit: Notes

DETECTION CONDITION & POSSIBLE CAUSES

Description Error light switch signal received from start stop unit
Detection condition
  • Front body control module (FBCM) receives the CAN error signals from the start stop unit 3 times with the ignition switched ON (engine off or on).
Fail-safe function
  • If DTC U0338:09 is detected when the ignition is switched ON (engine off or on), the headlight LO and the TNS are illuminated.
  • If DTC U0338:09 is cleared, the headlight LO and the TNS are turned off, and the operation returns to normal.
Possible cause
  • Light switch malfunction
  • Start stop unit malfunction
  • Front body control module (FBCM) malfunction
System wiring diagram Not applicable