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Home >> Toyota >> 2022 >> RAV4 LE, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 70 (Lighting System (W/ AFS) - Diagnostic Codes & Circuit Tests) >> LIGHTING SYSTEM (w/ AFS) >> DTC B242C: Right Headlight ECU Malfunction; DTC B242D: Left Headlight ECU Malfunction [02/2019 - 12/2021] >> Description

DTC B242C: Right Headlight ECU Malfunction; DTC B242D: Left Headlight ECU Malfunction [02/2019 - 12/2021]: Description

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The headlight ECU sub-assembly LH or headlight ECU sub-assembly RH stores a DTC if it detects an internal malfunction.

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from Note
B242C Right Headlight ECU Malfunction Detection condition: 
  1. The power switch is on (IG)

Malfunction status: 
  1. Headlight ECU sub-assembly RH internal malfunction

Malfunction duration: 
  1. Maximum 15 minutes
Headlight ECU sub-assembly RH AFS (Sub) -
B242D Left Headlight ECU Malfunction Detection condition: 
  1. The power switch is on (IG)

Malfunction status: 
  1. Headlight ECU sub-assembly LH internal malfunction

Malfunction duration: 
  1. Maximum 15 minutes
Headlight ECU sub-assembly LH AFS -