Montero V6-3.8L SOHC (2005)
STEP 9. Check theft-alarm horn relay connector A-11X and ETACS-ECU connector D-223 for loose, corroded or damaged terminals, or
terminals pushed back in the connector.
Q: Are theft-alarm horn relay connector A-11X and ETACS-ECU connector D-223 in good condition?
YES: Go to Step 10.
NO: Repair or replace the damaged component(s). Refer to Harness Connector Inspection. All the vehicle horn (including the theft-alarm horn)
should sound when the theft-alarm system is triggered.