Montero Sport XS 2WD V6-3.5L SOHC (2001)
STEP 1. Check the input signal from the ignition switch (by using scan tool MB991502).
CAUTION: To prevent damage to scan tool MB991502, always turn the ignition switch to the "LOCK" (OFF) position before connecting or
disconnecting scan tool MB991502.
1. Connect scan tool MB991502 to the data link connector.
2. Check that the tone alarm of the scan tool MB991502 sounds when the ignition key is moved from the "LOCK" position to the "ON" position.
Q: Does the tone alarm of scan tool MB991502 sound when the input signal enters?
YES: Replace the ETACS-ECU. Check that the malfunctions eliminated.
NO: Go to Step 3.
STEP 2. Check the input signal from the ignition switch (by using a voltmeter).
Check the input signals from the following switches:
1. Use special tool MB991529 to connect a voltmeter between ground terminal 4 or 5 and ETACS-ECU terminal 9 of the data link connector.
2. Check that the voltmeter indicator deflects once when the ignition key is moved from the "LOCK" position to the "ON" position.
Q: Does the voltmeter indicator deflect?
YES: Replace the ETACS-ECU. Check that the malfunctions eliminated.
NO: Go to Step 3.
STEP 3. Check the continuity of the key reminder switch.
1. Remove the driver's side under cover.
2. Remove the column covers, lower and upper.
3. Disconnect wiring connector D-16 from the key reminder switch and measure at the key reminder switch side.
