Corolla LE Sedan L4-1.8L (1ZZ-FE) (1999)
a. Connect the relay connector.
b. Connect the positive (+) lead from the voltmeter to terminal 8 and the negative (-) lead to terminal 7
c. Set the door lock control switch to UNLOCK and 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 and 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.