Charging System: Testing and Inspection

Charging System Test

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.

* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.

Reference Information

Schematic Reference

Starting and Charging Schematics [1][2]Electrical Diagrams

Connector End View Reference

Component Connector End Views Sunshade - Left (D61)

Description and Operation

Charging System Description and Operation Description and Operation

Electrical Information Reference

* Circuit Testing Circuit Testing

* Connector Repairs Connector Repairs

* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections

* Wiring Repairs Wiring Repairs

Circuit/System Verification

1. Ignition ON.

2. Verify the charge indicator on the instrument cluster is off and the driver information center display does not display a charging system message.

• If charge indicator is on or driver information center displays a charging system message
Refer to Diagnostic Trouble Code (DTC) List - Vehicle Diagnostic Trouble Code (DTC) List - Vehicle.

• If charge indicator is off and no driver information center messages present

3. All OK.

Circuit/System Testing

1. Ignition ON.

2. Verify that no G13 Generator or B18 Battery Current Sensor DTCs are set that would cause a charging system concern.

• If DTCs are set
Refer to Diagnostic Trouble Code (DTC) List - Vehicle Diagnostic Trouble Code (DTC) List - Vehicle.

• If no DTCs are set

3. Ignition OFF, C1 Battery at room temperature.

4. Test for 12 V or greater across the battery terminals.

• If less than 12 V
Refer to Battery Inspection/Test Battery Inspection/Test.

• If 12 V or greater

5. Engine ON, all accessories OFF, increase engine speed to 2,500 RPM.

6. Test for 12.6-15.0 V across the battery terminals.

• If battery voltage is less than 12.6 V or greater than 15 V
Replace the G13 Generator.

• If battery voltage is between 12.6-15.0 V

7. Engine ON, increase engine speed to 2,500 RPM. Turn ON all vehicle accessories.

8. Test for 12.6-15.0 V across the battery terminals.

• If battery voltage is less than 12.6 V or greater than 15 V
Replace the G13 Generator.

• If battery voltage is between 12.6-15.0 V

9. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the repair.

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