Subaru Legacy BN/BS (2015-2019) Service Manual: Dtc b2500 battery power supply

Subaru Legacy BN/BS (2015-2019) Service Manual / Power rear gate system (diagnostics) / Diagnostic procedure with diagnostic trouble code (dtc) / Dtc b2500 battery power supply

DTC DETECTING CONDITION:

Detected when the power supply voltage is less than 9 V or 16 V or more at starting PRG operation (when SW is operated).

TROUBLE SYMPTOM:

The power rear gate does not operate.

WIRING DIAGRAM:

Power rear gate system Power Rear Gate System > WIRING DIAGRAM

STEP	CHECK	YES	NO
1.CHECK AUTO OPERATION. 1) Turn the ignition switch to OFF. 2) Using operation switch, perform power rear gate auto open/close operation from full close position or full open position.	Is auto operation activated-	Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again. NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2500 BATTERY POWER SUPPLY
2.CHECK DTC. 1) Turn the ignition switch to ON. 2) Using the Subaru Select Monitor, read DTC of PRG CM. Read Diagnostic Trouble Code (DTC)	Is DTC B2500 displayed- (Current malfunction)	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2500 BATTERY POWER SUPPLY	Even if DTC is displayed, the circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis again. NOTE: In this case, temporary poor contact of connector, temporary open or short circuit of harness may be the cause.
3.CHECK FUSE. 1) Turn the ignition switch to OFF. 2) Check the fuse. Relay and Fuse	Is the fuse OK-	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2500 BATTERY POWER SUPPLY	Replace the defective fuse. When the fuse is blown immediately, repair the short circuit.
4.CHECK HARNESS. 1) Disconnect the PRG CM connector (R423). 2) Using a tester, measure the voltage between the PRG CM connector and chassis ground. Connector & terminal (R423) No. 6 (+) — Chassis ground (−):	Is the voltage 9 V or more-	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2500 BATTERY POWER SUPPLY	Repair or replace the open circuit of harness.
5.CHECK HARNESS. Using a tester, measure the resistance between the PRG CM connector and chassis ground. Connector & terminal (R423) No. 4 — Chassis ground:	Is the resistance less than 10 --	Diagnostic Procedure with Diagnostic Trouble Code (DTC) > DTC B2500 BATTERY POWER SUPPLY	Repair or replace the open circuit of harness.
6.CHECK CONNECTOR. Disconnect the PRG CM connector (R423).	Is there poor contact of connector-	Repair or replace the poor contact of connector.	Replace the PRG CM. Power Rear Gate Control Module

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Other materials:

Removal
NOTE:When replacing a single part, perform the work with the engine assembly installed to body.1. When working on the vehicleNOTE:When working on the vehicle, perform the following steps also.(1) Remove the air intake duct. Air Intake Duct > REMOVAL2. Remove the V-belts. V-belt > REMOVAL3. Use the ...