CAN COMMUNICATION SYSTEM (for LHD), Diagnostic DTC:U1106

DTC Code DTC Name
U1106 Lost Communication with Electric Parking Brake Module

DESCRIPTION

DTC Code DTC Detection Condition Trouble Area
U1106 There is no communication from the parking brake ECU assembly.

  • Power source circuit of parking brake ECU assembly

  • Parking brake ECU assembly

WIRING DIAGRAM

A01GMRGE01

INSPECTION PROCEDURE

Note

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

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (PARKING BRAKE ECU ASSEMBLY - BATTERY AND BODY GROUND)


    1. A01GMR3E03
      Text in Illustration
      *a

      Rear view of wire harness connector

      (to Parking Brake ECU Assembly)

      Disconnect the parking brake ECU assembly connectors.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      S46-8 (+B) - Body ground Always 11 to 14 V
      S48-2 (BECU) - Body ground Always 11 to 14 V
      S48-4 (IG) - Body ground Engine switch on (IG) 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      S46-3 (GND1) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE PARKING BRAKE ECU ASSEMBLY Click here