Montero V6-3.8L SOHC (2005)
TROUBLESHOOTING HINTS
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The front door switches may be defective
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The ETACS-ECU may be defective
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The wiring harness or connectors may have loose, corroded or damaged terminals, or terminals pushed back in the connector
DIAGNOSIS
Required Special Tools:
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MB991223: Harness Set
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MB991958: Scan Tool (MUT-III Sub Assembly)
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MB991824: Vehicle Communication Interface (V.C.I.)
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MB991827: MUT-III USB Cable
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MB991911: MUT-III Main Harness B
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MB991813: SWS Monitor Kit
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MB991806: SWS Monitor Cartridge
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MB991812: SWS Monitor Harness (For Column-ECU)
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MB991822: Probe Harness
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MB991854: SWS Monitor Harness (For 13-pin)
STEP 1. Use scan tool MB991958 to select "ECU COMM CHK" on the SWS monitor display.
Check the ETACS-ECU.
CAUTION: To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or
disconnecting scan tool MB991958.
1. Connect the special tool. Refer to "How to connect SWS monitor". See: Reading and Clearing Diagnostic Trouble Codes/How to Connect SWS
Monitor
2. Connect SWS monitor kit MB991862 to the data link connector (13-pin).
3. Turn the ignition switch to the "ON" position.
4. Operate scan tool MB991958 according to the procedure below to display "ECU COMM CHK."
1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "SWS MONITOR."
4. Select "ECU COMM CHK."
5. Scan tool MB991958 should show "OK" on the "ECU COMM ECU" menu for the "ETACS ECU" menu.
Q: Is "OK" displayed on the "ETACS ECU" menu?
