CRUISE CONTROL SYSTEM TC and CG Terminal Circuit

DESCRIPTION

Connecting terminals TC and CG of the DLC3 causes the system to enter self-diagnostic mode. If a malfunction is present, DTCs will be output.

Tech Tips

When a particular warning light remains blinking, a ground short in the wiring of terminal TC of the DLC3 or an internal ground short in the relevant ECU is suspected.

WIRING DIAGRAM

A01WZQ8E04

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (DLC3 - ECM AND BODY GROUND)

    A01X2OPE01

    1. Disconnect the A38*1 or A52*2 ECM connector.

      Tech Tips


      • *1: for LHD

      • *2: for RHD

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

      Standard Resistance
      for 1GR-FE LHD, 1UR-FE LHD, 3UR-FE LHD
      Tester Connection Condition Specified Condition
      E22-13 (TC) - A38-16 (TC) Always Below 1 Ω
      E22-4 (CG) - Body ground
      E22-13 (TC) - Body ground Always 10 kΩ or higher
      for 1GR-FE RHD, 1UR-FE RHD
      Tester Connection Condition Specified Condition
      E22-13 (TC) - A52-16 (TC) Always Below 1 Ω
      E22-4 (CG) - Body ground
      E22-13 (TC) - Body ground Always 10 kΩ or higher
      for 1VD-FTV LHD
      Tester Connection Condition Specified Condition
      E22-13 (TC) - A38-27 (TC) Always Below 1 Ω
      E22-4 (CG) - Body ground
      E22-13 (TC) - Body ground Always 10 kΩ or higher
      for 1VD-FTV RHD
      Tester Connection Condition Specified Condition
      E22-13 (TC) - A52-27 (TC) Always Below 1 Ω
      E22-4 (CG) - Body ground
      E22-13 (TC) - Body ground Always 10 kΩ or higher

    OK

    PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR