Montero XLS 4WD V6-3.5L SOHC (2001)
STEP 3. Check the theft-alarm horn. Connect the battery as shown and check that the theft-alarm horn sounds.
Q: Is the theft-alarm horn in good condition?
YES: Go to Step 4.
NO: Replace it. The horn should sound when the theft-alarm system is triggered.
STEP 4. Check the theft-alarm horn relay.
Q: Is the theft-alarm horn relay in good condition?
YES: Go to Step 5.
NO: Replace it. The horn should sound when the theft-alarm system is triggered.
STEP 5. Check the theft-alarm horn relay power supply circuit at the theft-alarm horn relay connector A-11X.
1. Disconnect the theft-alarm horn relay connector A-11X and measure at the relay box side.
2. Measure the voltages between terminals 3, 5 and ground.
Q: Are the voltages approximately 12 volts (battery positive voltage)?
