METER / GAUGE SYSTEM Power Source Circuit

DESCRIPTION

This circuit is the power source circuit for the accessory meter assembly. 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 a power source mainly used for signal transmission.

Tech Tips

If the accessory meter assembly displays "1:00" when the ignition switch is turned off, then to ON again, the +B terminal has a malfunction.

The maximum clock assembly margin of error is -4 to 4 seconds per day when the temperature is between -20°C (-4°F) and 60°C (140°F).

WIRING DIAGRAM

A01ELNME01

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (ACCESSORY METER ASSEMBLY CIRCUIT)


    1. A01ELJOE02
      Text in Illustration
      *1

      Front view of wire harness connector

      (to Accessory Meter Assembly)
      *2

      Front view of wire harness connector

      (to Accessory Meter Assembly )

      Disconnect the F2 and F5 connectors.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      F5-1 (IG) - Body ground Ignition switch ON 11 to 14 V
      F5-9 (+B) - Body ground Always 11 to 14 V
      F2-13 (IG+) - Body ground Ignition switch ON 11 to 14 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      F2-12 (E) - Body ground Always Below 1 Ω
      F5-16 (SGND) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE ACCESSORY METER ASSEMBLY Click here