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Seems a fuse somewhere is blown.
NOTE: Verify power door lock system is operating properly before trouble shooting anti-theft system. See POWER DOOR LOCKS & KEYLESS ENTRY - MONTERO SPORT article. Ensure fuse No. 15 (15-amp) in passenger compartment relay box, fuse No. 11 (10-amp) in junction block, and fuse No. 5 (10-amp) in engine compartment relay box are okay. Ensure all component terminals and ground connections are clean and tight. Repair or replace components and circuits as necessary.
POWER DOOR LOCK INOPERATIVE
Operate door lock(s) with ignition switch in OFF position. If door lock(s) do not operate, check for following possible causes:
Burned fuse, circuit breaker or fusible link caused by short to body ground.
Wire connector, or pin inside connector, disengaged at any connector or component in system.
Defective door lock switch, relay or actuator.
Subfreezing weather conditions, mechanical failure, or corroded or misaligned assemblies.
Tuesday, December 2nd, 2008 AT 8:59 AM