Tacoma PreRunner Extra Cab 2WD L4-2.7L (3RZ-FE) (1998)
Audible Warning Device Control Module: Testing and Inspection
Light-On Warning System:
INSPECT INTEGRATION RELAY OPERATION
a. Connect the positive (+) lead from the battery to terminal 12 and the negative (-) lead to terminal 7.
b. Connect the positive (+) lead from the battery to terminal 4 and the negative (-) lead to terminal 5.
c. Check that the buzzer does not sound when terminal 4 or 5 is connected to the positive (+) lead.
d. Check that the buzzer does not sound when disconnecting terminal 4 or 5.
If operation is not as specified, replace the relay.