56 - 64 Ω (TCM): Wiring Diagram

CAN communication system. See appropriate SYSTEM WIRING DIAGRAM article.

Fig 1: CAN Communication System - Wiring Diagram

Courtesy of SUBARU OF AMERICA, INC.

NOTE: Perform inspection when no data is received, or faulty is detected. This is different from power supply shorted or ground shorted.

Step	Check	Yes	No
1 CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS. Disconnect the TCM connector. Using the tester, measure the resistance between terminals. Connector & terminal CVT model (B55) No. 17 - No. 18: 5AT model (B54) No. 20 - No. 21:	Is the resistance 400 Ω or more?	Related lines between TCM and main wiring harness is open, or main wiring harness is open at two places or more.	Go to step 2 .
2 CHECK RELATED LINES. Using the tester, measure the resistance between terminals. Connector & terminal CVT model (B55) No. 17 - (B40) No. 14: (B55) No. 18 - (B40) No. 6: 5AT model (B54) No. 20 - (B40) No. 14: (B54) No. 21 - (B40) No. 6:	Is the resistance 10 Ω or more?	Repair or replace the open circuit portion of TCM related lines.	Check DTC of TCM. Refer to OPERATION .