METER / GAUGE SYSTEM Entire Combination Meter does not Operate

DESCRIPTION

This circuit is the power source circuit for the combination meter. This circuit provides 2 power source types: one is a constant power source mainly used as a backup power source, and the other is a 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 communication. If a voltage of 12 V is not applied to terminal IG+ when the ignition switch is ON, indicators will not operate.

WIRING DIAGRAM

A01X8I3E04

PROCEDURE


  1. INSPECT FUSE (METER, MPX-B NO. 2)


    1. Remove the METER and MPX-B NO. 2 fuses from the engine room relay block.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      METER fuse Always Below 1 Ω
      MPX-B NO.2 fuse

    NG

    REPLACE FUSE

    OK

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


    1. Disconnect the E119 combination meter assembly connector.

    2. A01WZPOE02
      Text in Illustration
      *a

      Component without harness connected

      (Combination Meter Assembly)

      Measure the resistance and voltage according to the value(s) in the tables below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      E119-20 (ET) - Body ground Always Below 1 Ω
      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      E119-21 (B) - Body ground Always 11 to 14 V
      E119-22 (IG+) - Body ground Ignition switch ON

    OK

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    NG

    REPLACE COMBINATION METER ASSEMBLY Click here