Montero XLS 4WD V6-3.5L SOHC (2001)
TROUBLESHOOTING HINTS
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Malfunction of the front-ECU
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Malfunction of the ETACS-ECU
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Damaged harness wires or connectors
DIAGNOSIS
STEP 1. Check the headlight (high-beam) operation.
Q: Do the headlights (high-beam) illuminate normally?
YES: Go to Step 2.
NO: Solve the problem first.
STEP 2. Replacement of ECU
1. Replace the ETACS-ECU.
2. The headlights (high-beam) should flash when the theft- alarm system is triggered.
Q: Do the headlights (high-beam) flash normally by the theft-alarm system?
YES: There is no action to be taken.
NO: Replace the front-ECU. The headlights (high-beam) should flash when the theft-alarm system is triggered.
Inspection Procedure P-4
Theft-alarm system: Panic alarm function does not work
TECHNICAL DESCRIPTION (COMMENT)
If the keyless entry system is normal, the ETACS-ECU is defective.
TROUBLESHOOTING HINTS
-
Malfunction of the ETACS-ECU
-
Damaged harness wires or connectors
DIAGNOSIS
Required Special Tools:
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MB991223: Test Harness Set
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MB991502: Scan Tool (MUT-II)
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MB991529: Diagnostic Trouble Code Check Harness
STEP 1. Check the keyless entry system.
Q: Does the keyless entry system work normally?
YES: Go to Step 2 <when using scan tool MB991502> or 3 <when using a voltmeter>.
NO: Solve the problem first.
STEP 2. Check the input signal (by using scan tool MB991502).
Check the input signals from the transmitter "PANIC" 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.
