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Home >> Lexus >> 2020 >> UX 250h Base >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Can Communication System (Diagnostics - Introduction) (8 Of 8) (Hybrid) - UX250H (2 Of 5) >> DTC Combination Table (Open Or Short In Bus 3, Past Communication Error) [07/2022 -

DTC Combination Table (Open Or Short In Bus 3, Past Communication Error) [07/2022 -

  1. If DTCs indicating a past communication error of an ECU or sensor connected to Bus 3 are output (but the bus is normal when performing the CAN bus check), the probable area that had a malfunction can be determined based on the following DTC combination table.

    HINT: 

    • Based on the table below and DTCs output from ECUs connected via CAN communication, the probable part for which communication stop occurred can be determined.
    • If there is an open in a CAN branch line or a communication stop is currently occurring, the malfunctioning area can easily be determined by performing a CAN bus check using the Techstream to determine which ECU or sensor that is connected to the branch line is not responding (the ECU or sensor has a background color of red).
    • ◦: DTC is output.
    • -: DTC is not output.
    • *1: DTC U0073 may be stored when communication is lost.
    • *2: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.
    • If an open occurs in just one of the wires of a CAN branch line, DTCs which are not related to malfunctioning parts may be output (DTCs may be displayed randomly), or a message indicating a communication error may be displayed.
    • If an open occurs in just one of the wires of a CAN branch line, even if the values in the following tables are "-", DTCs which are not related to malfunctioning parts may be output, or a message indicating a communication error may be displayed.
    - Trouble Mode
    Open in CAN branch line(s)
    Output ECU Output DTC Radio Receiver Assembly Communication Stop Mode
    Refer to Radio Receiver Assembly Communication Stop Mode [07/2022 - ]
    DCM Communication Stop Mode
    Refer to DCM Communication Stop Mode [10/2019 - ]
    ASC ECU Communication Stop Mode
    Refer to ASC ECU Communication Stop Mode [10/2018 - ]
    Bus 1 Central Gateway ECU (Network Gateway ECU)*2 - - - -
    Clearance Warning ECU Assembly U0100-87 - - -
    U0125-87 - - -
    U0126-87 - - -
    U0129-87 - - -
    U0140-87 - - -
    U0151-87 - - -
    U0155-87 - - -
    U0164-87 - - -
    U0293-87 - - -
    Forward Recognition Camera U0125-87 - - -
    U0126-87 - - -
    U0129-87 - - -
    U0131-87 - - -
    U0140-87 - - -
    U0155-87 - - -
    U0293-87 - - -
    Millimeter Wave Radar Sensor Assembly - - - -
    Blind Spot Monitor Sensor LH U0125 - - -
    U0126 - - -
    U0129 - - -
    U0142 - - -
    U0293 - - -
    Rear Television Camera Assembly U0126-87 - - -
    U0129-87 - - -
    U0140-87 - - -
    U0163-87 - -
    U0293-87 - - -
    U1110-87 - - -
    Bus 2 Central Gateway ECU (Network Gateway ECU)*2 - - - -
    Brake Booster with Master Cylinder Assembly U0100 - - -
    U0120 - - -
    U0293 - - -
    Inverter with Converter Assembly U0100-87 - - -
    U0293-87 - - -
    U1170-87 - - -
    Rear Hybrid Motor Control Assembly - - - -
    Vehicle Approaching Speaker Controller U0129 - - -
    U0140 - - -
    U0293 - - -
    Hybrid Vehicle Control ECU U0100-87 - - -
    U0110-87 - - -
    U0164-87 - - -
    U1107-87 - - -
    U1170-87 - - -
    ECM U0110-87 - - -
    U0293-87 - - -
    Bus 3 Radio Receiver Assembly*1 U0100-87 - -
    U0129-87 - -
    U0132-87 - -
    U0140-87 - -
    U0155-87 - -
    U0164-87 -
    U0198-87 - -
    U0265-87 - -
    U0293-87 - -
    Central Gateway ECU (Network Gateway ECU)*2 - - - -
    DCM (Telematics Transceiver) U0140-87 - -
    U0155-87 - -
    U0163-87 -
    Stereo Component Equalizer Assembly U0129 - -
    U0142 - -
    U0293 - -
    Bus 4 Central Gateway ECU (Network Gateway ECU)*2 - - - -
    Brake Booster with Master Cylinder Assembly U0124 - - -
    U0126 - - -
    U0128 - - -
    U0151 - - -
    U0293 - - -
    Hybrid Vehicle Control ECU U0104-87 - - -
    U0122-87 - - -
    U0126-87 - - -
    U0129-87 - - -
    U0140-87 - - -
    U0151-87 - - -
    U0293-87 - - -
    Brake Actuator Assembly U0125-87 - - -
    U0129-87 - - -
    U0140-87 - - -
    U0293-87 - - -
    ECM U0129-87 - - -
    Occupant Detection ECU U0125 - - -
    U0129 - - -
    Absorber Control ECU U0101 - - -
    U0122 - - -
    U0124 - - -
    U0126 - - -
    U0293 - - -
    Tire Pressure ECU and Receiver U0129 - - -
    Power Steering ECU with Motor Assembly U0100 - - -
    U0129 - - -
    U023A - - -
    U0293 - - -
    Steering Sensor - - - -
    Airbag ECU Assembly U0154 - - -
    U023A - - -
    Bus 5 Air Conditioning Amplifier Assembly U0100 - - -
    U0131 - - -
    U0142 - - -
    U0151 - - -
    U0155 - - -
    U0163 - -
    U0293 - - -
    Central Gateway ECU (Network Gateway ECU)*2 - - - -
    Certification ECU (Smart Key ECU Assembly) Entry Function U0100 - - -
    U0142 - - -
    U0155 - - -
    U0230 - - -
    U0293 - - -
    Certification ECU (Smart Key ECU Assembly) Power Source Switching Function U0100 - - -
    U0140 - - -
    U0155 - - -
    U0293 - - -
    Main Body ECU (Multiplex Network Body ECU) U0100 - - -
    U0101 - - -
    U0120 - - -
    U0126 - - -
    U0129 - - -
    U0151 - - -
    U0155 - - -
    U0163 - -
    U0164 - - -
    U0182 - - -
    U0199 - - -
    U0200 - - -
    U0208 - - -
    U0230 - - -
    U023A - - -
    U0293 - - -
    U0327 - - -
    U1106 - - -
    U1115 - - -
    Outer Mirror Control ECU Assembly RH U0142 - - -
    Meter Mirror Sub-assembly U0100-87 - - -
    U0129-87 - - -
    U0140-87 - - -
    U0155-87 - - -
    U0163-87 - -
    U0164-87 - - -
    U023A-87 - - -
    U0293-87 - - -
    U1110-87 - - -
    No. 1 Headlight ECU Sub-assembly LH*1 U0100 - - -
    U0101 - - -
    U0126 - - -
    U0129 - - -
    U0142 - - -
    U0155 - - -
    U0242 - - -
    U0293 - - -
    No. 1 Headlight ECU Sub-assembly RH*1 U0126 - - -
    U0142 - - -
    U0155 - - -
    U0182 - - -
    Multiplex Tilt and Telescopic ECU U0142 - - -
    U0155 - - -
    U0208 - - -
    Bus 5 Multiplex Network Door ECU U0101-87 - - -
    U0129-87 - - -
    U0140-87 - - -
    U0155-87 - - -
    U1117-87 - -
    Outer Mirror Control ECU Assembly LH U0142 - - -
    Position Control ECU Assembly LH - - - -
    Combination Meter Assembly U0100-87 - - -
    U0114-87 - - -
    U0127-87 - - -
    U0129-87 - - -
    U0131-87 - - -
    U0132-87 - - -
    U0140-87 - - -
    U0151-87 - - -
    U0163-87 - -
    U0164-87 - - -
    U0168-87 - - -
    U0182-87 - - -
    U0230-87 - - -
    U0233-87 - - -
    U023A-87 - - -
    U0293-87 - - -
    U1104-87 - - -
    U1106-87 - - -
    U1110-87 - - -
    U1112-87 - - -
    U1133-87 - - -
    - Trouble Mode
    Open in CAN main bus line(s)
    Output ECU Output DTC Central Gateway ECU (Network Gateway ECU)
    (CA3H and CA3L Terminal)
    Central Gateway ECU (Network Gateway ECU)
    (CAYH and CAYL Terminal)
    Bus 1 Central Gateway ECU (Network Gateway ECU)*2 - - -
    Clearance Warning ECU Assembly U0100-87 - -
    U0125-87 - -
    U0126-87 - -
    U0129-87 - -
    U0140-87 - -
    U0151-87 - -
    U0155-87 - -
    U0164-87 - -
    U0293-87 - -
    Forward Recognition Camera U0125-87 - -
    U0126-87 - -
    U0129-87 - -
    U0131-87 - -
    U0140-87 - -
    U0155-87 - -
    U0293-87 - -
    Millimeter Wave Radar Sensor Assembly - - -
    Blind Spot Monitor Sensor LH U0125 - -
    U0126 - -
    U0129 - -
    U0142 - -
    U0293 - -
    Rear Television Camera Assembly U0126-87 - -
    U0129-87 - -
    U0140-87 - -
    U0163-87 -
    U0293-87 - -
    U1110-87 - -
    Bus 2 Central Gateway ECU (Network Gateway ECU)*2 - - -
    Brake Booster with Master Cylinder Assembly U0100 - -
    U0120 - -
    U0293 - -
    Inverter with Converter Assembly U0100-87 - -
    U0293-87 - -
    U1170-87 - -
    Rear Hybrid Motor Control Assembly - - -
    Vehicle Approaching Speaker Controller U0129 - -
    U0140 - -
    U0293 - -
    Hybrid Vehicle Control ECU U0100-87 - -
    U0110-87 - -
    U0164-87 - -
    U1107-87 - -
    U1170-87 - -
    ECM U0110-87 - -
    U0293-87 - -
    Bus 3 Radio Receiver Assembly*1 U0100-87 -
    U0129-87 -
    U0132-87 -
    U0140-87 -
    U0155-87 -
    U0164-87 -
    U0198-87 - -
    U0265-87 -
    U0293-87 -
    Central Gateway ECU (Network Gateway ECU)*2 - - -
    DCM (Telematics Transceiver) U0140-87 -
    U0155-87 -
    U0163-87 - -
    Stereo Component Equalizer Assembly U0129 -
    U0142 -
    U0293 -
    Bus 4 Central Gateway ECU (Network Gateway ECU)*2 - - -
    Brake Booster with Master Cylinder Assembly U0124 - -
    U0126 - -
    U0128 - -
    U0151 - -
    U0293 - -
    Hybrid Vehicle Control ECU U0104-87 - -
    U0122-87 - -
    U0126-87 - -
    U0129-87 - -
    U0140-87 - -
    U0151-87 - -
    U0293-87 - -
    Brake Actuator Assembly U0125-87 - -
    U0129-87 - -
    U0140-87 - -
    U0293-87 - -
    ECM U0129-87 - -
    Occupant Detection ECU U0125 - -
    U0129 - -
    Absorber Control ECU U0101 - -
    U0122 - -
    U0124 - -
    U0126 - -
    U0293 - -
    Tire Pressure ECU and Receiver U0129 - -
    Power Steering ECU with Motor Assembly U0100 - -
    U0129 - -
    U023A - -
    U0293 - -
    Steering Sensor - - -
    Airbag ECU Assembly U0154 - -
    U023A - -
    Bus 5 Air Conditioning Amplifier Assembly U0100 - -
    U0131 - -
    U0142 - -
    U0151 - -
    U0155 - -
    U0163 -
    U0293 - -
    Central Gateway ECU (Network Gateway ECU)*2 - - -
    Certification ECU (Smart Key ECU Assembly) Entry Function U0100 - -
    U0142 - -
    U0155 - -
    U0230 - -
    U0293 - -
    Certification ECU (Smart Key ECU Assembly) Power Source Switching Function U0100 - -
    U0140 - -
    U0155 - -
    U0293 - -
    Main Body ECU (Multiplex Network Body ECU) U0100 - -
    U0101 - -
    U0120 - -
    U0126 - -
    U0129 - -
    U0151 - -
    U0155 - -
    U0163 -
    U0164 - -
    U0182 - -
    U0199 - -
    U0200 - -
    U0208 - -
    U0230 - -
    U023A - -
    U0293 - -
    U0327 - -
    U1106 - -
    U1115 - -
    Outer Mirror Control ECU Assembly RH U0142 - -
    Meter Mirror Sub-assembly U0100-87 - -
    U0129-87    
    U0140-87 - -
    U0155-87 - -
    U0163-87 -
    U0164-87 - -
    U023A-87 - -
    U0293-87 - -
    U1110-87 - -
    No. 1 Headlight ECU Sub-assembly LH*1 U0100 - -
    U0101 - -
    U0126 - -
    U0129 - -
    U0142 - -
    U0155 - -
    U0242 - -
    U0293 - -
    No. 1 Headlight ECU Sub-assembly RH*1 U0126 - -
    U0142 - -
    U0155 - -
    U0182 - -
    Multiplex Tilt and Telescopic ECU U0142 - -
    U0155 - -
    U0208 - -
    Bus 5 Multiplex Network Door ECU U0101-87 - -
    U0129-87 - -
    U0140-87 - -
    U0155-87 - -
    U1117-87 -
    Outer Mirror Control ECU Assembly LH U0142 - -
    Position Control ECU Assembly LH - - -
    Combination Meter Assembly U0100-87 - -
    U0114-87 - -
    U0127-87 - -
    U0129-87 - -
    U0131-87 - -
    U0132-87 - -
    U0140-87 - -
    U0151-87 - -
    U0163-87 -
    U0164-87 - -
    U0168-87 - -
    U0182-87 - -
    U0230-87 - -
    U0233-87 - -
    U023A-87 - -
    U0293-87 - -
    U1104-87 - -
    U1106-87 - -
    U1110-87 - -
    U1112-87 - -
    U1133-87 - -
    - Trouble Mode
    CAN bus lines short circuit or short to GND
    Output ECU Output DTC CANH to CANL CANH Short to Ground CANL Short to Ground
    Bus 1 Central Gateway ECU (Network Gateway ECU)*2 - - - -
    Clearance Warning ECU Assembly U0100-87 - - -
    U0125-87 - - -
    U0126-87 - - -
    U0129-87 - - -
    U0140-87 - - -
    U0151-87 - - -
    U0155-87 - - -
    U0164-87 - - -
    U0293-87 - - -
    Forward Recognition Camera U0125-87 - - -
    U0126-87 - - -
    U0129-87 - - -
    U0131-87 - - -
    U0140-87 - - -
    U0155-87 - - -
    U0293-87 - - -
    Millimeter Wave Radar Sensor Assembly - - - -
    Blind Spot Monitor Sensor LH U0125 - - -
    U0126 - - -
    U0129 - - -
    U0142 - - -
    U0293 - - -
    Rear Television Camera Assembly U0126-87 - - -
    U0129-87 - - -
    U0140-87 - - -
    U0163-87
    U0293-87 - - -
    U1110-87 - - -
    Bus 2 Central Gateway ECU (Network Gateway ECU)*2 - - - -
    Brake Booster with Master Cylinder Assembly U0100 - - -
    U0120 - - -
    U0293 - - -
    Inverter with Converter Assembly U0100-87 - - -
    U0293-87 - - -
    U1170-87 - - -
    Rear Hybrid Motor Control Assembly - - - -
    Vehicle Approaching Speaker Controller U0129 - - -
    U0140 - - -
    U0293 - - -
    Hybrid Vehicle Control ECU U0100-87 - - -
    U0110-87 - - -
    U0164-87 - - -
    U1107-87 - - -
    U1170-87 - - -
    ECM U0110-87 - - -
    U0293-87 - - -
    Bus 3 Radio Receiver Assembly*1 U0100-87
    U0129-87
    U0132-87
    U0140-87
    U0155-87
    U0164-87
    U0198-87
    U0265-87
    U0293-87
    Central Gateway ECU (Network Gateway ECU)*2 - - - -
    DCM (Telematics Transceiver) U0140-87
    U0155-87
    U0163-87
    Stereo Component Equalizer Assembly U0129
    U0142
    U0293
    Bus 4 Central Gateway ECU (Network Gateway ECU)*2 - - - -
    Brake Booster with Master Cylinder Assembly U0124 - - -
    U0126 - - -
    U0128 - - -
    U0151 - - -
    U0293 - - -
    Hybrid Vehicle Control ECU U0104-87 - - -
    U0122-87 - - -
    U0126-87 - - -
    U0129-87 - - -
    U0140-87 - - -
    U0151-87 - - -
    U0293-87 - - -
    Brake Actuator Assembly U0125-87 - - -
    U0129-87 - - -
    U0140-87 - - -
    U0293-87 - - -
    ECM U0129-87 - - -
    Occupant Detection ECU U0125 - - -
    U0129 - - -
    Absorber Control ECU U0101 - - -
    U0122 - - -
    U0124 - - -
    U0126 - - -
    U0293 - - -
    Tire Pressure ECU and Receiver U0129 - - -
    Power Steering ECU with Motor Assembly U0100 - - -
    U0129 - - -
    U023A - - -
    U0293 - - -
    Steering Sensor - - - -
    Airbag ECU Assembly U0154 - - -
    U023A - - -
    Bus 5 Air Conditioning Amplifier Assembly U0100 - - -
    U0131 - - -
    U0142 - - -
    U0151 - - -
    U0155 - - -
    U0163
    U0293 - - -
    Central Gateway ECU (Network Gateway ECU)*2 - - - -
    Certification ECU (Smart Key ECU Assembly) Entry Function U0100 - - -
    U0142 - - -
    U0155 - - -
    U0230 - - -
    U0293 - - -
    Certification ECU (Smart Key ECU Assembly) Power Source Switching Function U0100 - - -
    U0140 - - -
    U0155 - - -
    U0293 - - -
    Main Body ECU (Multiplex Network Body ECU) U0100 - - -
    U0101 - - -
    U0120 - - -
    U0126 - - -
    U0129 - - -
    U0151 - - -
    U0155 - - -
    U0163
    U0164 - - -
    U0182 - - -
    U0199 - - -
    U0200 - - -
    U0208 - - -
    U0230 - - -
    U023A - - -
    U0293 - - -
    U0327 - - -
    U1106 - - -
    U1115 - - -
    Outer Mirror Control ECU Assembly RH U0142 - - -
    Meter Mirror Sub-assembly U0100-87 - - -
    U0129-87 - - -
    U0140-87 - - -
    U0155-87 - - -
    U0163-87
    U0164-87 - - -
    U023A-87 - - -
    U0293-87 - - -
    U1110-87 - - -
    No. 1 Headlight ECU Sub-assembly LH*1 U0100 - - -
    U0101 - - -
    U0126 - - -
    U0129 - - -
    U0142 - - -
    U0155 - - -
    U0242 - - -
    U0293 - - -
    No. 1 Headlight ECU Sub-assembly RH*1 U0126 - - -
    U0142 - - -
    U0155 - - -
    U0182 - - -
    Multiplex Tilt and Telescopic ECU U0142 - - -
    U0155 - - -
    U0208 - - -
    Bus 5 Multiplex Network Door ECU U0101-87 - - -
    U0129-87 - - -
    U0140-87 - - -
    U0155-87 - - -
    U1117-87
    Outer Mirror Control ECU Assembly LH U0142 - - -
    Position Control ECU Assembly LH - - - -
    Combination Meter Assembly U0100-87 - - -
    U0114-87 - - -
    U0127-87 - - -
    U0129-87 - - -
    U0131-87 - - -
    U0132-87 - - -
    U0140-87 - - -
    U0151-87 - - -
    U0163-87
    U0164-87 - - -
    U0168-87 - - -
    U0182-87 - - -
    U0230-87 - - -
    U0233-87 - - -
    U023A-87 - - -
    U0293-87 - - -
    U1104-87 - - -
    U1106-87 - - -
    U1110-87 - - -
    U1112-87 - - -
    U1133-87 - - -