IS 250 RWD V6-2.5L (4GR-FSE) (2007)
c. Establish conditions in which the test light comes on.
Example:
[A] - Ignition SW on
[B] - Ignition SW and SW 1 on
[C] - Ignition SW, SW 1 and Relay on (Connect the Relay) and SW 2 off (or Disconnect SW 2)
d. Disconnect and reconnect the connectors while watching the test light.
The short lies between the connector where the test light stays lit and the connector where the light goes out.
e. Find the exact location of the short by lightly shaking the problem wire along the body.
CAUTION:
a. Do not open the cover or the case of the ECU unless absolutely necessary. (If the IC terminals are touched, the IC may be destroyed
by static electricity.)
b. When replacing the internal mechanism (ECU part) of the digital meter, be careful that no part of your body or clothing comes in
contact with the terminals of leads from the IC, etc. of the replacement part (spare part).
Voltage Check
VOLTAGE CHECK
a. Establish conditions in which voltage is present at the check point.
Example:
[A] - Ignition SW on
[B] - Ignition SW and SW 1 on
[C] - Ignition SW, SW 1 and Relay on (SW 2 off)
b. Using a voltmeter, connect the negative lead to a good ground point or negative battery terminal, and the positive lead to the connector or
component terminal.
This check can be done with a test light instead of a voltmeter.
Disconnection of Male and Female Connectors
DISCONNECTION OF MALE AND FEMALE CONNECTORS