For 1990-2009 cars

### Diagnostic Aids

The driver information center (DIC) may display a Charging System Failure message. This message being displayed is the result of a class 2 message being sent by the engine control module (ECM), instrument panel module (IPM), dash integration module (DIM), or the instrument panel cluster (IPC) to the DIC. Each module has a different criteria for requesting the message to be displayed. Refer to Charging System Description and Operation.

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
Connector End View Reference: Component Connector End Views
1 | Did you perform the Diagnostic System Check - Vehicle? | -- | Go to Step 2 | Go to Diagnostic System Check - Vehicle
2 |

1. Start the engine.
2. Turn OFF all of the accessories.

Does the battery charge indicator remain illuminated?

--

Go to Step 3

Go to Testing for Intermittent Conditions and Poor Connections

3 |

1. Install a scan tool.
2. Start the engine.
3. Turn OFF all of the accessories.
4. Increase engine speed to 1,500 RPM.
5. With a scan tool, observe the Battery Voltage parameter in the instrument panel module (IPM) or dash integration module (DIM) data list, engine control module (ECM) data list, and the instrument panel cluster (IPC) data list.
6. Compare the voltages.

Do all of the voltage measure within the specified range?

1V

Go to Step 4

Go to Step 5

4 | Are the voltages displayed within the specified range? | 11-16V | Go to Step 5 | Go to Charging System Test
5 | Test the battery positive voltage and ground circuits of the affected module for a high resistance or open. Refer to Circuit Testing and Wiring Repairs. Did you find and correct the condition? | -- | Go to Step 8 | Go to Step 6
6 | Inspect for poor connections at the harness connector of the affected module. Refer to Connector Repairs. Did you find and correct the condition? | -- | Go to Step 8 | Go to Step 7
7 | Replace the affected module. Refer to Control Module References for replacement, setup and programming. 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 7