Initial Inspection and Diagnostic Overview

DARK CURRENT

Work Procedure


CAUTION:
If the negative terminal cable of the 12V battery is disconnected from the battery terminal, the large dark current state may not be reproduced. If the 12V battery becomes dead, never disconnect the 12V
battery terminal when installing an ammeter.

1. CHECK DARK CURRENT






1.Install ammeter side probe (2) to negative terminal cable of 12V
battery (1).


2.Check that all of the electrical equipment is turned OFF.
3.Close and lock the door. Check that the room lamp is OFF.
4.Measure dark current.
Reference value: 50mA or less

CAUTION:
The time of stable dark current depends on vehicle equipment and specification. If dark current does not decrease to 50 mA or less after waiting for approximately one minute, measure again after waiting at least for 30 minutes.
Is the inspection result normal?
YES- INSPECTION END
NO- GO TO 2.

2. CHECK CIRCUIT

1.Disconnect and connect fuses one at a time to find one that dark current changes sharply.

CAUTION:
Dark current decreases sharply when a fuse is disconnected. When the fuse is reconnected, dark current may not decrease so much. In this case, the circuit of the fuse is probably questionable.
2.Check change in dark current by swinging harness of questionable circuit.
Does dark current change?
YES- Check harness for short.
NO- There is a possibility that the electronic unit in the circuit does not enter into Power-saving mode when the power switch is turned OFF. If this is assumed to be true, replace electronic unit.