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Home >> Toyota >> 2021 >> C-HR Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 5 (Lane Departure Alert System - Diagnostic Codes & Circuit Tests) >> LANE DEPARTURE ALERT SYSTEM (w/ Steering Control) >> DTC C1AA1: FCM Destination Information Unmatched [02/2017 - 08/2020] >> Description

DTC C1AA1: FCM Destination Information Unmatched [02/2017 - 08/2020]: Description

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When the forward recognition camera is replaced with a new one, the new forward recognition camera attempts to store country specification information received from the main body ECU (multiplex network body ECU) and ECM. If the country specification information stored in the forward recognition camera is different from that stored in the main body ECU (multiplex network body ECU) or ECM, DTC C1AA1 is stored.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1AA1 FCM Destination Information Unmatched 2 seconds after the ignition switch is turned to ON, destination information stored in the forward recognition camera and that received from the main body ECU (multiplex network body ECU) or ECM do not match for 5 seconds or more.
  • CAN communication system
  • Forward recognition camera
  • Main body ECU (Multiplex network body ECU)
  • ECM