Diagnostic Trouble Code Index DTC: Headlamp Control Module (HCM) -- Defender/L663
- Diagnostic Trouble Code Index - DTC: Headlamp Control Module (HCM) (G2423982)
- Description And Operation
- Headlamp Control Module (HCM)
- Notes
- DTC B103C-49: Left Headlamp Control - Internal electronic failure
- DTC B103D-49: Right Headlamp Control - Internal electronic failure
- DTC B1041-12: Leveling Control - Circuit Short To Battery
- DTC B1041-14: Leveling Control - Circuit Short To Ground Or Open
- DTC B1041-54: Leveling Control - Missing calibration
- DTC B1041-86: Leveling Control - Signal Invalid
- DTC B1087-31: LIN Bus "A" - No signal
- DTC B1087-81: LIN Bus "A" - Invalid serial data received
- DTC B10AE-01: Headlamp Leveling Motor - General electrical failure
- DTC B10AE-4B: Headlamp Leveling Motor - Over temperature
- DTC B10F3-11: Left front position light - Circuit short to ground
- DTC B10F3-12: Left front position light - Circuit short to battery
- DTC B10F3-13: Left front position light - Circuit open
- DTC B10F3-16: Left front position light - Circuit voltage below threshold
- DTC B10F3-19: Left front position light - Circuit current above threshold
- DTC B10F3-4B: Left front position light - Over temperature
- DTC B10F4-11: Right front position light - Circuit short to ground
- DTC B10F4-12: Right front position light - Circuit short to battery
- DTC B10F4-13: Right front position light - Circuit open
- DTC B10F4-16: Right front position light - Circuit voltage below threshold
- DTC B10F4-19: Right front position light - Circuit current above threshold
- DTC B10F4-4B: Right front position light - Over temperature
- DTC B123A-11: Left Front Turn Indicator - Circuit short to ground
- DTC B123A-12: Left Front Turn Indicator - Circuit short to battery
- DTC B123A-13: Left Front Turn Indicator - Circuit open
- DTC B123A-16: Left Front Turn Indicator - Circuit voltage below threshold
- DTC B123A-19: Left Front Turn Indicator - Circuit current above threshold
- DTC B123A-4B: Left Front Turn Indicator - Over temperature
- DTC B123B-11: Right Front Turn Indicator - Circuit short to ground
- DTC B123B-12: Right Front Turn Indicator - Circuit short to battery
- DTC B123B-13: Right Front Turn Indicator - Circuit open
- DTC B123B-16: Right Front Turn Indicator - Circuit voltage below threshold
- DTC B123B-19: Right Front Turn Indicator - Circuit current above threshold
- DTC B123B-4B: Right Front Turn Indicator - Over temperature
- DTC B124A-11: Right Daytime Running Light - Circuit short to ground
- DTC B124A-12: Right Daytime Running Light - Circuit short to battery
- DTC B124A-13: Right Daytime Running Light - Circuit open
- DTC B124A-16: Right Daytime Running Light - Circuit voltage below threshold
- DTC B124A-19: Right Daytime Running Light - Circuit current above threshold
- DTC B124A-4B: Right Daytime Running Light - Over temperature
- DTC B124B-11: Left Daytime Running Light - Circuit short to ground
- DTC B124B-12: Left Daytime Running Light - Circuit short to battery
- DTC B124B-13: Left Daytime Running Light - Circuit open
- DTC B124B-16: Left Daytime Running Light - Circuit voltage below threshold
- DTC B124B-19: Left Daytime Running Light - Circuit current above threshold
- DTC B124B-4B: Left Daytime Running Light - Over temperature
- DTC B12FE-11: Fan - Circuit short to ground
- DTC B12FE-12: Fan - Circuit short to battery
- DTC B12FE-13: Fan - Circuit open
- DTC B146B-11: Left Front Side Marker Lamp - Circuit short to ground
- DTC B146B-12: Left Front Side Marker Lamp - Circuit short to battery
- DTC B146B-13: Left Front Side Marker Lamp - Circuit open
- DTC B146B-16: Left Front Side Marker Lamp - Circuit voltage below threshold
- DTC B146B-19: Left Front Side Marker Lamp - Circuit current above threshold
- DTC B146B-4B: Left Front Side Marker Lamp - Over temperature
- DTC B146C-11: Right Front Side Marker Lamp - Circuit short to ground
- DTC B146C-12: Right Front Side Marker Lamp - Circuit short to battery
- DTC B146C-13: Right Front Side Marker Lamp - Circuit open
- DTC B146C-16: Right Front Side Marker Lamp - Circuit voltage below threshold
- DTC B146C-19: Right Front Side Marker Lamp - Circuit current above threshold
- DTC B146C-4B: Right Front Side Marker Lamp - Over temperature
- DTC B1C98-11: Left Corner Lamp Circuit - Circuit short to ground
- DTC B1C98-12: Left Corner Lamp Circuit - Circuit short to battery
- DTC B1C98-13: Left Corner Lamp Circuit - Circuit open
- DTC B1C98-16: Left Corner Lamp Circuit - Circuit voltage below threshold
- DTC B1C98-19: Left Corner Lamp Circuit - Circuit current above threshold
- DTC B1C98-4B: Left Corner Lamp Circuit - Over temperature
- DTC B1C99-11: Right Corner Lamp Circuit - Circuit short to ground
- DTC B1C99-12: Right Corner Lamp Circuit - Circuit short to battery
- DTC B1C99-13: Right Corner Lamp Circuit - Circuit open
- DTC B1C99-16: Right Corner Lamp Circuit - Circuit voltage below threshold
- DTC B1C99-19: Right Corner Lamp Circuit - Circuit current above threshold
- DTC B1C99-4B: Right Corner Lamp Circuit - Over temperature
- DTC B1D00-11: Left Low Beam - Circuit short to ground
- DTC B1D00-12: Left Low Beam - Circuit short to battery
- DTC B1D00-13: Left Low Beam - Circuit open
- DTC B1D00-16: Left Low Beam - Circuit voltage below threshold
- DTC B1D00-19: Left Low Beam - Circuit current above threshold
- DTC B1D00-4B: Left Low Beam - Over temperature
- DTC B1D01-11: Right Low Beam - Circuit short to ground
- DTC B1D01-12: Right Low Beam - Circuit short to battery
- DTC B1D01-13: Right Low Beam - Circuit open
- DTC B1D01-16: Right Low Beam - Circuit voltage below threshold
- DTC B1D01-19: Right Low Beam - Circuit current above threshold
- DTC B1D01-4B: Right Low Beam - Over temperature
- DTC B1D02-11: Left High Beam Circuit - Circuit short to ground
- DTC B1D02-12: Left High Beam Circuit - Circuit short to battery
- DTC B1D02-13: Left High Beam Circuit - Circuit open
- DTC B1D02-16: Left High Beam Circuit - Circuit voltage below threshold
- DTC B1D02-19: Left High Beam Circuit - Circuit current above threshold
- DTC B1D02-4B: Left High Beam Circuit - Over temperature
- DTC B1D03-11: Right High Beam Circuit - Circuit short to ground
- DTC B1D03-12: Right High Beam Circuit - Circuit short to battery
- DTC B1D03-13: Right High Beam Circuit - Circuit open
- DTC B1D03-16: Right High Beam Circuit - Circuit voltage below threshold
- DTC B1D03-19: Right High Beam Circuit - Circuit current above threshold
- DTC B1D03-4B: Right High Beam Circuit - Over temperature
- DTC C1A03-12: Left Front Height Sensor - Circuit short to battery
- DTC C1A03-14: Left Front Height Sensor - Circuit short to ground or open
- DTC C1A04-12: Right Front Height Sensor - Circuit short to battery
- DTC C1A04-14: Right Front Height Sensor - Circuit short to ground or open
- DTC C1A05-12: Left Rear Height Sensor - Circuit short to battery
- DTC C1A05-14: Left Rear Height Sensor - Circuit short to ground or open
- DTC C1A06-12: Right Rear Height Sensor - Circuit short to battery
- DTC C1A06-14: Right Rear Height Sensor - Circuit short to ground or open
- DTC C1A68-11: Left Front Height Sensor Supply - Circuit short to ground
- DTC C1A68-12: Left Front Height Sensor Supply - Circuit short to battery
- DTC C1A69-11: Right Front Height Sensor Supply - Circuit short to ground
- DTC C1A69-12: Right Front Height Sensor Supply - Circuit short to battery
- DTC C1A70-11: Left Rear Height Sensor Supply - Circuit short to ground
- DTC C1A70-12: Left Rear Height Sensor Supply - Circuit short to battery
- DTC C1A71-11: Right Rear Height Sensor Supply - Circuit short to ground
- DTC C1A71-12: Right Rear Height Sensor Supply - Circuit short to battery
- DTC U0046-81: Vehicle Communication Bus C - Invalid serial data received
- DTC U0046-87: Vehicle Communication Bus C - Missing message
- DTC U0046-88: Vehicle Communication Bus C - Bus off
- DTC U0241-87: Lost Communication With Headlamp Control Module "A" - Missing message
- DTC U0242-87: Lost Communication With Headlamp Control Module "B" - Missing message
- DTC U0542-81: Invalid Data Received From Headlamp Control Module "A" - Invalid serial data received
- DTC U0543-81: Invalid Data Received From Headlamp Control Module "B" - Invalid serial data received
- DTC U200D-11: Control Module Output Power A - Circuit short to ground
- DTC U200D-15: Control Module Output Power A - Circuit short to battery or open
- DTC U200E-11: Control Module Output Power B - Circuit short to ground
- DTC U200E-15: Control Module Output Power B - Circuit short to battery or open
- DTC U201A-51: Control Module Main Calibration Data - Not programed
- DTC U210A-11: Temperature Sensor - Circuit short to ground
- DTC U210A-12: Temperature Sensor - Circuit short to battery
- DTC U210A-13: Temperature Sensor - Circuit open
- DTC U2300-56: Central Configuration - Invalid/incomplete configuration
- DTC U2301-88: Control Module Sub Network A - Bus off
- DTC U3000-49: Control Module - Internal electronic failure
- Headlamp Control Module (HCM)
- Description And Operation