T100 Extra Cab Pickup 4WD V6-3.4L (5VZ-FE) (1997)
a. Connect the connector to the relay.
b. Connect the positive (+) lead from the voltmeter to terminal 1 and the negative (-) lead to terminal 6.
c. Set the door lock control switch to UNLOCK, check that the voltage rises from 0 V to battery positive voltage for approximately 0.2 seconds.
d. Reverse the polarity of the voltmeter leads.
e. Set the door lock control switch to LOCK, check that the voltage rises from 0 V to battery positive voltage for approximately 0.2 seconds.
If operation is not as specified, replace the relay.