Tracker 4WD V6-2.5L VIN 4 (2001)
Malfunction Indicator Lamp: Testing and Inspection
Malfunction Indicator Lamp (MIL) Inoperative
CIRCUIT DESCRIPTION
The Malfunction Indicator Lamp (MIL) is illuminated when the ignition is ON and the engine is OFF. Battery ignition voltage is supplied to the MIL.
The Powertrain Control Module (PCM) will turn the MIL ON by grounding the lamp control circuit. The MIL is normally off when the engine is
running.
DIAGNOSTIC AIDS
Check for any of the following conditions:
^
Check for a faulty indicator bulb, or an open in the instrument cluster power circuit if the engine starts and runs OK.
^
Check for a faulty main relay if there is no MIL and the engine cranks but will not start.
^
A MIL that is dim or not illuminated steady can be caused by an inadequate PCM ground. Inspect G102 for a clean, tight connection.
^
A faulty electrical connection to the PCM.
An intermittent malfunction may be caused by a fault in the MIL electrical circuit. Inspect the wiring harness and components for an intermittent
condition. Refer to Intermittent Conditions. See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Strategies/Intermittent
Conditions
TEST DESCRIPTION
