CAN COMMUNICATION SYSTEM (for LHD with Entry and Start System), Diagnostic DTC:U0182

DTC Code DTC Name
U0182 Lost Communication with AFS ECU

DESCRIPTION

DTC Code DTC Detection Condition Trouble Area
U0182 There is no communication from the headlight swivel ECU assembly (AFS ECU).

  • Power source or inside headlight swivel ECU assembly (AFS ECU)

  • Headlight swivel ECU assembly (AFS ECU) branch wire or connector

  • Headlight swivel ECU assembly (AFS ECU)

WIRING DIAGRAM

A00JZ2UE03

INSPECTION PROCEDURE

Note

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

Tech Tips

Operating the engine switch, any switches or any doors triggers related ECU and sensor communication with the CAN, which causes resistance variation.

PROCEDURE


  1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL


    1. Disconnect the cable from the negative (-) battery terminal before measuring the resistances of the main wire and branch wire.

      CAUTION:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

      Note


      • After turning the engine switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work Click here.

      • When disconnecting the cable, some systems need to be initialized after the cable is reconnected Click here.


    NEXT

  2. CHECK OPEN IN CAN BUS WIRE (HEADLIGHT SWIVEL ECU BRANCH WIRE)


    1. A00K023E01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Headlight Swivel ECU Assembly [AFS ECU])

      Disconnect the A58 headlight swivel ECU assembly (AFS ECU) connector.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      A58-12 (CANH) - A58-13 (CANL) Engine switch off 54 to 69 Ω

    NG

    REPAIR OR REPLACE HEADLIGHT SWIVEL ECU ASSEMBLY CAN BRANCH WIRE OR CONNECTOR (CANH, CANL)

    OK

  3. CHECK HARNESS AND CONNECTOR (HEADLIGHT SWIVEL ECU - BATTERY AND BODY GROUND)


    1. A00K023E02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Headlight Swivel ECU Assembly [AFS ECU])

      Connect the cable to the negative (-) battery terminal.

      Note

      When disconnecting the cable, some systems need to be initialized after the cable is reconnected Click here.

    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      A58-22 (E1) - Body ground Always Below 1 Ω

    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A58-15 (IG) - Body ground Engine switch on (IG) 11 to 14 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE HEADLIGHT SWIVEL ECU ASSEMBLY (AFS ECU) Click here