Montero V6-3.8L SOHC (2005)
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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. Verify the headlight (low-beam) operation.
Check to see that the headlight (low-beam) lights up properly when operating the dimmer switch while the headlight switch is ON.
Q: Do the headlights (low-beam) illuminate normally?
YES: Go to Step 2.
NO: Refer to Inspection Procedure J-2 "Headlights (low-beam) do not illuminate normally."
STEP 2. Use scan tool MB991958 to select "ECU COMM CHK" on the SWS monitor display.
Check the following ECUs:
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Front-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. Connect the DLC harness before connecting the column-ECU harness. Be sure to connect SWS monitor kit
MB991862 after turning on scan tool MB991958.
1. Connect scan tool MB991958 to the data link connector.
2. Connect SWS monitor kit MB991862 to the column switch connector.
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 CHK" menu for the "FRONT ECU" menu.
Q: Is "OK" displayed on the "FRONT ECU"menu?
YES: Replace the front-ECU. The daytime running light function should now work normally.
NO: Refer to Inspection procedure A-4 "Communication with the front-ECU is not possible."
Inspection Procedure K-1
Flasher Timer: Turn-signal lights do not flash when the turn-signal light switch is operated.
