Montero V6-3.8L SOHC (2005)
Ignition Key Reminder Tone Alarm Function
CIRCUIT OPERATION
The ETACS-ECU operates the ignition key reminder tone alarm function (sounds the tone alarm intermittently), based on input signals from the
following switches:
-
Ignition switch (IG1): OFF
-
Key reminder switch: OFF
-
Driver's door switch: ON
The ETACS-ECU operates the ignition key reminder tone alarm function (sounds the tone alarm intermittently) if any of the following conditions are
satisfied:
-
Ignition switch: LOCK position (key inserted)
-
Driver's door: OPEN
TECHNICAL DESCRIPTION (COMMENT)
If the function does not work normally, the input circuit system from the switches or the ETACS-ECU may be defective (refer to "CIRCUIT
OPERATION").
TROUBLESHOOTING HINTS
-
The key reminder switch may be defective
-
The front door switches may be defective
-
The ETACS-ECU may be defective
-
The wiring harness or connectors may have loose, corroded, or damaged terminals, or terminals pushed back in the connector
DIAGNOSIS
Required Special Tools:
-
MB991223: Harness Set
-
MB991958: Scan Tool (MUT-III Sub Assembly)
-
MB991824: Vehicle Communication Interface (V.C.I.)
-
MB991827: MUT-III USB Cable
-
MB991911: MUT-III Main Harness B
-
MB991813: SWS Monitor Kit
-
MB991806: SWS Monitor Cartridge
-
MB991812: SWS Monitor Harness (For Column-ECU)
-
MB991822: Probe Harness
-
MB991854: SWS Monitor Harness (For 13-pin)
STEP 1. Use scan tool MB991958 to select "ECU COMM CHK" on the SWS monitor display.
