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Home >> Lexus >> 2019 >> GX 460 Base >> Repair and Diagnosis (Single Page) >> Transmission >> Transfer Case >> Transfer Case (Diagnostic Codes & Circuit Tests) >> Transfer System >> DTC U0100: Lost Communication with ECM / PCM "A"; DTC U0122: Lost Communication With Vehicle Dynamics Control Module [08/2019 - ] >> Caution / Notice / Hint

Caution / Notice / Hint

NOTE:
  • When the data in the ECM, skid control ECU (master cylinder solenoid) is being overwritten, the indicator light may rapidly blink due to the 4 wheel drive control ECU detecting a communication malfunction (blinks at 0.25 second intervals (0.25 seconds on and 0.25 seconds off)), but this is not a malfunction.
  • Clear all DTCs, since DTCs are stored after the data in the ECM, skid control ECU (master cylinder solenoid) is overwritten.
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