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Home >> Chevrolet >> 2005 >> Malibu Maxx >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 3 (Engine Control System - 2.2L (L61) - Troubleshooting & Diagnosis) >> Troubleshooting >> Malfunction Indicator Lamp (MIL) Always On >> Test Description

Test Description

WARNING: This page is about a different variant/trim than selected.

The number below refers to the step number on the diagnostic table.

  1. 2:  This step determines if the condition is with the MIL control circuit or the PCM.
Malfunction Indicator Lamp (MIL) Always On

Step Action Yes No
Schematic Reference: Engine Controls Schematics
Connector End View Reference: Powertrain Control Module (PCM) Connector End Views or Engine Controls Connector End Views
1 Did you perform the Diagnostic System Check - Vehicle? Go to Step 2  Go to Diagnostic System Check - Vehicle in Vehicle DTC Information
  1. Turn OFF the ignition.
  2. Disconnect the powertrain control module (PCM).
  3. Turn ON the ignition, with the engine OFF.
  4. Observe the malfunction indicator lamp (MIL).
Is the MIL illuminated?
Go to Step 3  Go to Step 5 
3 Test the MIL control circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 6  Go to Step 4 
4 Replace the instrument panel cluster (IPC). Refer to Instrument Panel (I/P) Assembly Replacement in Instrument Panel, Gages and Console.
Did you complete the replacement?
Go to Step 6  -
5 Replace the PCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming.
Did you complete the repair?
Go to Step 6  -
6
  1. Turn the ignition OFF for 30 seconds.
  2. Start the engine.
Does the vehicle operate correctly without any unwanted MIL illumination, and without any stored DTCs?
System OK Go to Diagnostic System Check - Vehicle in Vehicle DTC Information