For 1990-2009 cars

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
Connector End View Reference: Engine Electrical Connector End Views , Powertrain Control Module Connector End Views in Engine Controls - 2.2L (L61) or Engine Control Module Connector End Views in Engine Controls - 3.0L (L81)
1 | Did you perform the Diagnostic System Check for Engine Electrical? | -- | Go to Step 2 | Go to Diagnostic System Check - Engine Electrical
2 |

1. Start the engine.
2. Turn Off all accessories.

Does the battery charge indicator remain illuminated?

--

Go to Step 3

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

3 |

1. Install a scan tool
2. With a scan tool, observe the Battery 1 parameter in the body control module (BCM) data list.

Does the voltage measure within the normal operating range?

12.6-16.0 V

Go to Step 4

Go to Charging System Test

4 | With a scan tool, observe the Battery 1 parameter in the powertrain control module (PCM) data list. Does the voltage measure within the normal operating range? | 12.6-16.0 V | Go to Step 5 | Go to Charging System Test
5 | With a scan tool, command the lamp and gages On and Off. Does the charge indicator turn On and Off with each command? | -- | Go to Step 6 | Go to Step 7
6 | Important: The replacement ECM must be programmed. Replace the ECM. Refer to Powertrain Control Module Replacement in Engine Controls - 2.2L (L61) or Engine Control Module Replacement in Engine Controls - 3.0L (L81). Did you complete the replacement? | -- | Go to Step 8 | --
7 | Replace the instrument panel cluster. Refer to Instrument Cluster Replacement in Instrument Panel, Gages and Console. Did you complete the replacement? | -- | Go to Step 8 | --
8 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2