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Home >> Toyota >> 2022 >> RAV4 LE, FWD >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Electronically Controlled Brake System (W/O Vacuum Brake Booster) - Diagnostic Codes (3 Of 8) >> ELECTRONICALLY CONTROLLED BRAKE SYSTEM (w/o Vacuum Brake Booster) >> DTC C123A-00: IG1 Malfunction [12/2021 - ] >> Description

DTC C123A-00: IG1 Malfunction [12/2021 - ]: Description

Refer to DTC C110E-14.

Refer to DESCRIPTION

DTC No. Detection Item DTC Detection Condition Trouble Area MIL Note
C123A-00 IG1 Malfunction When the IG1 terminal voltage is less than 2.8 V, the IG2 terminal voltage is 10.2 V or more for 4 seconds or more.
  • Open or short in IG1 circuit
  • Improperly connected connector, deformation or corrosion of terminals
  • No. 1 skid control ECU (brake booster with master cylinder assembly)
Comes on
  • SAE Code: C123B
  • Output ECU: Both skid control ECUs