DTC U1601 Lin Communication (Seat Memory) Failure: Wiring Diagram

Power Seat System. See appropriate SYSTEM WIRING DIAGRAM article.

Fig 1: Power Seat System - Wiring Diagram

G08585552

Courtesy of SUBARU OF AMERICA, INC.

DIAGNOSTIC PROCEDURE

Step	Check	Yes	No
1 CHECK BODY INTEGRATED UNIT SETTING. Using Subaru Select Monitor, change "Seat Memory Setting" of the body integrated unit registration (function setting) from ON to OFF. Read the DTC of CAN system.	Is U1601 detected?	Replace the body integrated unit. Refer to REMOVAL .	Go to step 2 .
2 CHECK BODY INTEGRATED UNIT SETTING. Using Subaru Select Monitor, change "Seat Memory Setting" of the body integrated unit registration (function setting) to ON. Disconnect the power seat CM and the body integrated unit connector. Connect the disconnected connectors. Using the Subaru Select Monitor, read DTC of CAN system.	Is U1601 detected?	Go to step 3 .	It is possible that temporary poor contact occurs. Perform the clear memory.
3 CHECK HARNESS. Turn the ignition switch to OFF. Disconnect the power seat CM and the body integrated unit connector. Using the tester, measure the resistance between terminals. Connector & terminal (i171) No. 16 - (R388) No. 12:	Is the resistance less than 10 Ω?	Go to step 4 .	Repair the open circuit of harness.
4 CHECK HARNESS. Using the tester, measure the resistance between terminals. Connector & terminal (R388) No. 12 - Chassis ground:	Is the resistance 10 kΩ or more?	Go to step 5 .	Repair the shorted portion of harness.
5 CHECK HARNESS. Turn the ignition switch to ON. Using the tester, measure the voltage between terminals. Connector & terminal (R388) No. 12 - Chassis ground:	Is the voltage less than 1 V?	Go to step 6 .	Repair the shorted portion of harness.
6 CHECK CONTROL MODULE. Turn the ignition switch to OFF. Replace the power seat CM with a normal part. Using the Subaru Select Monitor, read DTC of CAN system.	Is U1601 detected?	Replace the body integrated unit. Refer to REMOVAL .	Replace the power seat CM. Refer to POWER SEAT CONTROL MODULE (SEAT WITH MEMORY FUNCTION) .