Montero V6-3.8L SOHC (2005)
2. Measure the voltage between terminal 3 and ground, and also between terminal 5 and ground.
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The voltage should be approximately 12 volts (battery positive voltage).
Q: Is the measured voltage approximately 12 volts (battery positive voltage)?
YES: Go to Step 7.
NO: Go to Step 6.
STEP 6. Check the wiring harness between theft-alarm horn relay connector A-11X (terminals 3 and 5) and fusible link (1).
Q: Is the wiring harness between theft-alarm horn relay connector A-11X (terminals 3 and 5) and fusible link (1) in good condition?
YES: Replace the ETACS-ECU. All the vehicle horn (including the theft-alarm horn) should sound when the theft-alarm system is triggered.
NO: The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the
connector. Repair the wiring harness as necessary. All the vehicle horn (including the theft-alarm horn) should sound when the theft-alarm system is
triggered.
