Service Information

Orlando

DTC B1527

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.

The body control module (BCM) monitors the state of charge of the electrical system. If the BCM senses that the state of charge at ignition On is 30% lower than what it was when the engine was running.

Conditions for Running the DTC

The ignition must be in Accessory or Run mode for this code to set.

Conditions for Setting the DTC

The state of charge at ignition On is 30% lower than when the engine was running and battery drain is more than 2 A.

Action Taken When the DTC Sets

There is no battery indicator illuminated or Driver Information Centre message displayed.

Conditions for Clearing the DTC

•	The DTC will clear if the fault does not return after 50 consecutive ignition cycles.

•	The DTC will clear when run state of charge is greater than or equal to 80%.

Reference Information

Electrical Information Reference

•	Circuit Testing

•	Connector Repairs

•	Testing for Intermittent Conditions and Poor Connections

•	Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

Ignition ON, compare the scan tool Preview. State of Charge and Start Up State of Charge parameters. The scan tool readings should not differ by more than 30%.

⇒	If the scan tool readings differ by more than 30%, refer to Battery Electrical Drain/Parasitic Load Test .

DTC B1527

Diagnostic Instructions

DTC Descriptor

Circuit/System Description