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 16.
NO: Go to Step 15.
STEP 15. Check the wiring harness between horn relay connector A-10X (terminals 3 and 5) and the battery.
Q: Is the wiring harness between horn relay connector A-10X (terminals 3 and 5) and the battery 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.
