Power Source Circuit

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. The constant power source is mainly used as a backup power source of the clock assembly, however, it is also used for communication.

HINT: If the clock assembly displays "1:00" when the engine switch is turned off, then on (IG) again, the +B (*1)/ 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).

Wiring Diagram:

Step 1:

INSPECTION PROCEDURE