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Home >> Lexus >> 2022 >> NX 350 Base >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Electronic A/T Shift Lever System - Diagnostic Codes & Circuit Tests >> Electronic Shift Lever System >> DTC U0100-00: Lost Communication with ECM/PCM "A" Missing Message (Powertrain Bus); DTC U0140-00: Lost Communication with Body Control Module (Sub) Missing Message; DTC U0155-86: Lost Communication with Instrument Panel Cluster (IPC) Control Module Signal (some circuit quantity, reported via serial data) Invalid; DTC U1103-00: Lost Communication with Stop and Start Control Module Missing Message (Powertrain Bus); DTC U1107-00: Lost Communication with Power Management Module (Gear Shift Control Module "A"); DTC U114F-00: Lost Communication with Power Integration Module (System 2) Missing Message; DTC U1170-00: Lost Communication with Brake System Control Module (Gear Shift Control Module "A") [11/2021 - ] >> Caution / Notice / Hint
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Caution / Notice / Hint

NOTE:
  • When removing or installing the shift control ECU and shift actuator ECU, make sure there is no power supplied*1 when disconnecting or connecting the connectors.

    *1: Battery, sub-battery, integrated capacitor, etc.

  • When disconnecting a wire harness of any component connected to the supply power of the integrated capacitor (integration control supply) or when removing the integrated capacitor (integration control supply), make sure to wait 5 minutes or more after turning the ignition switch off for self-diagnosis to complete and the voltage of the integrated capacitor (integration control supply) to discharge.
  • Before performing troubleshooting, check the fuses, connector connections and contact pressure of the relevant terminals for this circuit.
  • To prevent the key from being locked in the vehicle, make sure to enter e-latch inspection mode and enable the manual release handle before disconnecting the cable from the negative (-) battery terminal.

    Refer to INSPECTION MODE PROCEDURE [11/2021 - ]

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