METER / GAUGE SYSTEM Malfunction in Water Temperature Warning Light

WIRING DIAGRAM

A0136L3E06
A0136L3E07

INSPECTION PROCEDURE

PROCEDURE


  1. READ VALUE OF INTELLIGENT TESTER (ENGINE COOLANT TEMPERATURE)


    1. Connect an intelligent tester to the DLC3.

    2. Start the engine and turn the intelligent tester ON.

    3. On the intelligent tester, select the following menu items: Powertrain / Engine and ECT / Data List / Coolant Temp.

    4. Read the value displayed on the tester.

      OK
      Between 75°C and 97°C (167°F and 207°F) with the engine warmed up.

    NG

    GO TO ENGINE CONTROL SYSTEM

    OK

  2. INSPECT COMBINATION METER ASSEMBLY


    1. A0138IEE02

      Check the meter indicator conditions.

      OK
      Wire Connection Condition Specified Condition
      A22-7 - Body ground

      Short circuit

      (Ignition switch ON)

      		 High engine coolant temperature indicator ON

      Tech Tips

      This inspection creates an intentional short circuit between the connector terminal and body ground, to check the meter indicator operation.


    OK

    CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - ECM) Click here

    NG

    REPLACE COMBINATION METER ASSEMBLY

  3. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - ECM)

    A0138CXE01

    1. Gasoline Engine:


      1. Disconnect the A22 combination meter connector.

      2. Disconnect the B25 ECM connector.

      3. Measure the resistance.

        Standard Resistance
        Tester Connection Specified Condition
        A22-7 - B25-5 Below 1 Ω
        A22-7 or B25-5 - Body ground 10 kΩ or higher

      4. Reconnect the ECM connector.

      5. Reconnect the combination meter connector.

    2. A0138SUE02

      Diesel Engine:


      1. Disconnect the A22 combination meter connector.

      2. Disconnect the B54 ECM connector.

      3. Measure the resistance.

        Standard Resistance
        Tester Connection Specified Condition
        A22-7 - B54-20 Below 1 Ω
        A22-7 or B54-20 - Body ground 10 kΩ or higher

      4. Reconnect the ECM connector.

      5. Reconnect the combination meter connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE ECM