METER / GAUGE SYSTEM Entire Combination Meter does not Operate

DTC Code DTC Name
Entire Combination Meter does not Operate

DESCRIPTION

This circuit is the power source circuit for the meter. This circuit provides two types of power sources; one is a constant power source mainly used as a backup power source, and the other is an IG power source mainly used for signal transmission. The constant power source is mainly used as a backup power source for the meter CPU, however, it is also used for CAN communication. If a voltage of 12 V is not applied to terminal IG+ when the ignition switch is turned to ON, the combination meter does not operate.

WIRING DIAGRAM

E293660E01

CAUTION / NOTICE / HINT

Note:

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

PROCEDURE

  1. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - BATTERY AND BODY GROUND)

    1. U123341E02

      Disconnect the combination meter assembly connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      H62-21 (ET) - Body ground

      Always

      Below 1 Ω

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

      Standard Voltage

      Tester Connection

      Condition

      Specified Condition

      H62-40 (B) - Body ground

      Always

      11 to 14 V
      Table 1. Text in Illustration

      *a

      Rear view of wire harness connector

      (to Combination Meter Assembly)

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  2. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - BATTERY)

    1. U123342E02

      Disconnect the combination meter assembly connector.

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

      Standard Voltage

      Tester Connection

      Switch Condition

      Specified Condition

      H62-39 (IG+) - Body ground

      Ignition switch ON

      11 to 14 V
      Table 2. Text in Illustration

      *a

      Rear view of wire harness connector

      (to Combination Meter Assembly)

    REPLACE COMBINATION METER ASSEMBLY

    (Click here)

  3. CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - ENGINE STOP AND START ECU)

    1. Disconnect the H62 combination meter assembly connector.

    2. Disconnect the H121 engine stop and start ECU connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      H62-39 (IG+) - H121-1 (IG02)

      Always

      Below 1 Ω

      H62-39 (IG+) or H121-1 (IG02) - Body ground

      Always

      10 kΩ or higher

    REPLACE ENGINE STOP AND START ECU

    (Click here)

    REPAIR OR REPLACE HARNESS OR CONNECTOR