DTC B1339 Device Power #3 Circuit Open. Buick Regal 2000

For 1990-2009 cars only

Makes 🢒 Buick 🢒 2000 🢒 Regal 🢒 Body and Accessories 🢒 Body Control System 🢒 DTC B1339 Device Power #3 Circuit Open

The battery feed circuit, from the INADV POWER BUS fuse to the BCM, provides power for the interior lamps.

The voltage on the interior lamps feed circuit from the BCM must be between 9-16 volts.

The BCM detects that the circuit from the INADV POWER BUS fuse to the BCM is less than 1 volt for longer than 0.3 seconds.

The BCM stores DTC B1339 in memory.

•	A current DTC B1339 will clear if the BCM no longer detects the fault.

•	A history DTC B1339 will clear after 100 consecutive ignition cycles if the condition for the malfunction is no longer present.

•	Use a scan tool in order to clear the DTC.

•	If the DTC B1339 is a history DTC, the fault may be intermittent. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

•	The following conditions may cause an intermittent malfunction to occur:

-	An intermittent open in the circuit from the INADV POWER BUS fuse to the BCM.

-	The BCM is intermittently open internally.

The number(s) below refer to the step number(s) on the diagnostic table.

This step checks for an open in a battery feed circuit.

Step	Action	Value(s)	Yes	No
1	Did you perform the Body Control Module Diagnostic System Check?	--	Go to Step 2	Go to Diagnostic System Check - Body Control System
2	Install a scan tool. Turn ON the ignition, with the engine OFF. With a scan tool, observe the Battery Power 3 parameter in the Body Control Module input data list. Does the scan tool display Active for both parameters?	--	Go to Diagnostic Aids	Go to Step 3
3	Test the battery circuit that does not display Active in the previous step for an open. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition?	--	Go to Step 6	Go to Step 4
4	Inspect for poor connections at the harness connector of the Body Control Module. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition?	--	Go to Step 6	Go to Step 5
5	Replace the Body Control Module. Refer to Body Control Module Replacement . Set up new Body Control Module. Refer to Body Control Module (BCM) Programming/RPO Configuration . Did you complete the repair?	--	Go to Step 6	--
6	Operate the vehicle within the Conditions for Running the DTC as specified in the supporting text. Use the scan tool in order to clear the DTCs. Does the DTC reset?	--	Go to Step 2	System OK