CAN COMMUNICATION SYSTEM(for LHD), Diagnostic DTC:U0141

DTC Code DTC Name
U0141 Lost Communication with Body Control Module "A"

DESCRIPTION

DTC Code DTC Detection Condition Trouble Area
U0141 There is no communication from the luggage room junction block assembly (rear junction block ECU).

  • Power source or inside of luggage room junction block assembly (rear junction block ECU)

  • Luggage room junction block assembly (rear junction block ECU)

WIRING DIAGRAM

A00199CE05

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (REAR JUNCTION BLOCK ECU - BATTERY AND BODY GROUND)


    1. Disconnect the luggage room junction block assembly (rear junction block ECU) connectors.

      A001EYWE01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Luggage Room Junction Block Assembly [Rear Junction Block ECU])

      		 - -

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      LD-4 (MPXB) - Body ground Always 11 to 14 V
      LH-1 (+BT1) - Body ground Always 11 to 14 V
      LH-1 (+BS1) - Body ground Always 11 to 14 V
      LH-1 (+BS2) - Body ground Always 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      LA-43 (PGND) - Body ground Always Below 1 Ω

    OK

    REPLACE LUGGAGE ROOM JUNCTION BLOCK ASSEMBLY

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR