Montero V6-3.8L SOHC (2005)
1. Disconnect M-ASTC-ECU connector E-120 and check at the harness connector (component side).
2. Turn the ignition switch to the "ON" position.
3. Connect terminal 54 to body ground.
Q: Does the buzzer sound?
YES: Replace the M-ASTC-ECU. Then go to Step 7.
NO: Go to Step 3.
STEP 3. Check the buzzer.
1. Remove the buzzer.
2. Connect the battery to the buzzer as shown on the illustration.
Q: Does the buzzer sound?
YES: Go to Step 4.
NO: Replace the buzzer. Then go to Step 7.
STEP 4. Check the buzzer power supply circuit at buzzer harness connector E-107.