Montero Sport V6-3.5L SOHC (2004)
Cargo Lamp: Initial Inspection and Diagnostic Overview
Introduction
INTRODUCTION TO DOME LIGHT AND CARGO SPACE LIGHT DIAGNOSIS <VEHICLES WITH KEYLESS ENTRY SYSTEM>
With the dome light switch and cargo space light switch in the "ROOM" position, the ETACS-ECU controls the dome light and cargo space light
operation as follows:
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When a door is opened from outside or inside [with the ignition switch turned to "LOCK" (OFF)]: When a door is opened, the ETACS-ECU
causes the dome light and cargo space light to be illuminated at the 100% intensity. When the door is closed, it dims out the dome light to 65%
intensity and approximately 30 seconds later, turns out the light completely. During this period (timer controlled period), the dome light and cargo
space light goes out if the ignition switch is turned "ON" or the doors are locked.
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When a door is opened or closed with the ignition switch in the "ON" position: The dome light and cargo space light illuminates at 100% intensity
when a door is opened and turned out when it is closed.
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When no door is opened and the ignition key is removed: When the ignition key is removed with all the doors closed, the dome light and cargo
space light are illuminated at an intensity of 100% and turned out approximately 30 seconds later. During that time (time-controlled period), the
dome light and cargo space light goes out if the ignition key inserted and turned to "ON" or the door locking system is activated.
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Dome light's and cargo space light's answerback operation in response to door lock control by keyless entry system: To allow the driver to
ascertain the result of the door locking/unlocking control action by the use of the keyless entry system, the ETACS-ECU causes the dome light and
cargo space light to blink twice when the doors are locked through the system and to illuminate for approximately 15 seconds when the doors are
locked. The dome light's and cargo space light's answerback operation in response to a keyless entry by operation of the hazard warning lights.
Troubleshooting Strategy
DOME LIGHT AND CARGO SPACE LIGHT DIAGNOSTIC TROUBLESHOOTING STRATEGY <VEHICLES WITH KEYLESS ENTRY
SYSTEM>
Use these steps to plan your diagnostic strategy. If you follow them carefully, you will be sure that you have exhausted most of the possible ways to find
a dome light and cargo space light fault.
1. Gather information from the customer.
2. Verify that the condition described by the customer exists.
3. Find the malfunction by following the Symptom Chart.
4. Verify that the malfunction is eliminated.
