Vibe FWD L4-1.8L VIN L (2005)
Malfunction Indicator Lamp: Testing and Inspection
Malfunction Indicator Lamp (MIL) Inoperative
MALFUNCTION INDICATOR LAMP (MIL) INOPERATIVE
CIRCUIT DESCRIPTION
There should always be a steady malfunction indicator lamp (MIL) when the ignition switch is in the ON position and the engine is not running.
System voltage is applied to the indicator bulb and the powertrain control module (PCM) provides a path to ground. Once the engine starts, the PCM
turns the OFF the MIL. When an engine control system malfunction occurs, the PCM turns ON the MIL and a diagnostic trouble code is stored in
memory.
DIAGNOSTIC AIDS
An intermittent malfunction may be caused by a faulty electrical connection in the MIL circuit. Refer to Intermittent Conditions. See: Powertrain
Management/Computers and Control Systems/Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Strategies
TEST DESCRIPTION