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Circuit Description

DTC TROUBLE DETECTION

DTC No. DTC Detecting Condition Trouble Area
Always ON Either of the following or 2. is detected:
  1. The ECU connectors are OFF from the ECU.
  2. There is a malfunction in the ECU internal circuit.
  • Battery
  • IC regulator
  • Power source circuit
  • Skid control ECU
NOTE: There is a case that LEXUS hand held tester cannot be used when ECU is abnormal.
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