CLOCK SYSTEM Power Source Circuit

DESCRIPTION

This circuit is the power source for the clock 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 clock assembly displays "1:00" when the ignition switch off, then on (IG) again, the B (*1) or +B (*2) 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).


  • *1: w/o Multi-information Display

  • *2: w/ Multi-information Display

WIRING DIAGRAM


  1. w/o Multi-information Display

    A017CPRE10

  2. w/ Multi-information Display

    A017CPRE11

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR


    1. A017FUOE03

      Disconnect the E20 (*1) or E9 (*2) connector.

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

      Standard voltage
      Tester Connection Condition Specified Condition
      E20-1 (B) (*1) - Body ground Always 11 to 14 V
      E9-6 (+B) (*2) - Body ground Always 11 to 14 V
      E20-4 (ACC) (*1) - Body ground Ignition switch on (ACC) 11 to 14 V
      E9-1 (IG) (*2) - Body ground Ignition switch on (IG) 11 to 14 V

      *1: w/o Multi-information Display

      *2: w/ Multi-information Display

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

      Standard resistance
      Tester Connection Condition Specified Condition
      E20-2 (E) (*1) - Body ground Always Below 1 Ω
      E9-5 (GND) (*2) - Body ground Always Below 1 Ω

      *1: w/o Multi-information Display

      *2: w/ Multi-information Display

      Result
      Result Proceed to
      OK (w/o Multi-information Display) A
      OK (w/ Multi-information Display) B
      NG C

    B

    REPLACE CLOCK ASSEMBLY (w/ Multi-information Display) Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    A

    REPLACE CLOCK ASSEMBLY (w/o Multi-information Display) Click here