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.

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

A01HNVRE13

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (TERMINAL TC of DLC3 - ECM)


    1. Disconnect the ECM connector.

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

      Standard Resistance (Check for Open)
      for 2AR-FE
      Tester Connection Condition Specified Condition
      A25-23 (TC) - I39-13 (TC) Always Below 1 Ω
      for 2GR-FE
      Tester Connection Condition Specified Condition
      A25-45 (TC) - I39-13 (TC) Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (DLC3 - ECM)

    OK

  2. CHECK HARNESS AND CONNECTOR (TERMINAL CG of DLC3 - BODY GROUND)

    A01HOC0E09
    Text in Illustration
    *a DLC3

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      I39-4 (CG) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR (DLC3 - BODY GROUND)

    OK

  3. CHECK HARNESS AND CONNECTOR (TERMINAL TC of DLC3 - BODY GROUND)

    A01HOC0E10
    Text in Illustration
    *a DLC3

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

      Standard Resistance (Check for Open)
      Tester Connection Condition Specified Condition
      I39-13 (TC) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR OR EACH ECU

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here