FixVault

DTC U0001-88/U0100-00/U0140-00/U0155-00: Communication Error [Auto Leveling Control Module]: Notes

DTC U0001-88/U0100-00/U0140-00/U0155-00: (AUTO LEVELING CONTROL MODULE) DETECTION CONDITION AND POSSIBLE CAUSE

Description U0001:88
  • Unit communication error (HS-CAN)

U0100:00
  • Communication error with PCM

U0140:00
  • Communication error with BCM

U0155:00
  • Communication error with instrument cluster
Detection condition
  • U0001:88
    • The auto leveling control module detected CAN bus communication line (HS-CAN) malfunction ten times continuously.
  • U0100:00
    • The auto leveling control module could not receive CAN signal from the PCM for 5 s or more.
  • U0140:00
    • The auto leveling control module could not receive CAN signal from the BCM for 5 s or more.
  • U0155:00
    • The auto leveling control module could not receive CAN signal from the instrument cluster for 5 s or more.
Fail-safe
  • U0001:88
    • The headlight leveling actuator is stopped at the position when the malfunction is determined.
  • U0100:00
    • The headlight leveling actuator is stopped at the position when the malfunction is determined.
  • U0140:00
    • The headlight leveling actuator is stopped at the position when the malfunction is determined.
  • U0155:00
    • Control of the headlight auto leveling system is continued.
Possible cause
  • Malfunction in CAN bus communication line
  • Malfunction in CAN communication line between PCM and auto leveling control module
  • Malfunction in CAN communication line between BCM and auto leveling control module
  • Malfunction in CAN communication line between instrument cluster and auto leveling control module
System wiring diagram Not applicable