Montero LTD 4WD V6-3.5L SOHC (2002)
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MB991223: Test Harness Set
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MB991502: Scan Tool (MUT-II)
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MB991862: SWS monitor kit
STEP 1. Check the headlights.
Q: Do the headlights (low-beam and high-beam) illuminate normally?
YES: Go to Step 2.
Headlights (low-beam) do not illuminate normally :
Refer to Inspection Procedure L-2 "Headlights (low-beam) do not illuminate normally."
Headlights (high-beam) do not illuminate normally :
Refer to Inspection Procedure L-3 "Headlights (high-beam) do not illuminate normally."
STEP 2. Check the input signal by using service data of the SWS monitor
Turn the passing switch to the "ON" position before checking input signals from the passing switch.
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. Also connect SWS monitor kit MB991862 after turning on scan tool MB991502.
1. Connect scan tool MB991502 to the data link connector.
2. Connect SWS monitor kit MB991862 to the column switch connector.
3. Select "COLUMN ECU" (DATA LIST), and check that normal conditions are displayed on the items described in the table.
Q: Is normal condition displayed?
YES: Replace the front-ECU. When the passing switch is turned "ON", the headlights (low-beam and high-beam) should illuminate normally.
NO: Refer to Inspection Procedure Q-6 "ETACS-ECU does not receive a signal from the passing switch."
Inspection Procedure L-5
Headlight, Tail Light: Headlights do not Illuminate When the Lighting Switch is at "AUTO," "TAIL," and "PASSING" Position, but
Illuminate at Low-beam when the Switch is at "HEAD" Position. At this Position, the Headlights cannot be Changed into High Beam by
Operating the Dimmer Switch.