For 1990-2009 cars only
Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptor
DTC B1527 00: High Parasitic Load DetectedCircuit/System Description
The body control module (BCM) monitors the state of charge (SOC) and current draw of the battery, in order to determine if there is a high parasitic load.
Conditions for Running the DTC
All of the following conditions are present:
| • | The battery current was less than -2 A for 15 seconds while the ignition was OFF, no key fob buttons were pressed, and no doors were open. |
| • | The ignition is turned from OFF to ON. |
Conditions for Setting the DTC
When the ignition is turned ON, the SOC is 30 percent less than it was when the engine was last running.
Action Taken When the DTC Sets
No indicators or DIC messages are displayed. This DTC is for information only.
Conditions for Clearing the DTC
| • | The DTC will pass when the SOC is 80 percent for 15 seconds. |
| • | A history DTC will clear if the fault does not return for 50 consecutive ignition cycles. |
Reference Information
Schematic Reference
Starting and Charging Schematics
Connector End View Reference
Description and Operation
Charging System Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
Refer to Battery Electrical Drain/Parasitic Load Test.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
