Check Keyless Entry Control Module

Step	Check	Yes	No
1 CHECK DIAGNOSTIC TROUBLE CODE (DTC). Prepare the Subaru Select Monitor kit. Turn the ignition switch to ON (engine OFF) and run the "PC application for Subaru Select Monitor". On << System Selection Menu >> display, select {Integ. unit mode}. Select the {Diagnostic Code(s) Display}.	Is DTC B1500 "Keyless UART com. Malfunction" displayed?	Go to step 2.	Keyless entry control module is normal.
2 CHECK POWER SUPPLY. Disconnect the keyless entry control module connector. Measure the voltage between keyless entry control module connector and chassis ground. Connector & terminal Model without tire pressure monitoring system (R345) No. 4 (+) - Chassis ground (-): Model with tire pressure monitoring system (R221) No. 6 (+) - Chassis ground (-):	Is the voltage 10 V or more?	Go to step 3.	Check the harness for open or short circuits between the keyless entry control module and the fuse.
3 CHECK GROUND CIRCUIT. Measure the resistance between keyless entry control module connector and chassis ground. Connector & terminal Model without tire pressure monitoring system (R345) No. 7 - Chassis ground: Model with tire pressure monitoring system (R221) No. 5 - Chassis ground:	Is the resistance less than 10 Ω?	Go to step 4.	Repair or replace the harness.
4 CHECK KEYLESS ENTRY CONTROL MODULE CIRCUIT. Disconnect the body integrated unit connector. Measure the resistance between keyless entry control module connector and body integrated unit connector. Connector & terminal Model without tire pressure monitoring system (i171) No. 11 - (R345) No. 3: Model with tire pressure monitoring system (i171) No. 11 - (R221) No. 11:	Is the resistance less than 10 Ω?	Replace the keyless entry control module.	Repair or replace the harness.