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 | | 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 |