56 - 64 Ω: Wiring Diagram

CAN communication system. See appropriate SYSTEM WIRING DIAGRAM article.

Fig 1: CAN Communication System - Wiring Diagram (Main-CAN)

Courtesy of SUBARU OF AMERICA, INC.

NOTE: When the measured resistance value is 56 - 64 Ω, main wiring harness or related lines may be shorted to ground, or shorted to power supply line, or related line may be open.

Step	Check	Yes	No
1 CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS. Using the tester, measure the resistance between terminals. Connector & terminal (B40) No. 6 - Chassis ground: (B40) No. 14 - Chassis ground:	Is the resistance 10 Ω or less?	Go to step 2 .	Go to step 4 .
2 CHECK CONTROL MODULE. With the tester connected, disconnect control module. NOTE: Disconnect the body integrated unit at the end. Connector & terminal (B40) No. 6 - Chassis ground: (B40) No. 14 - Chassis ground:	Did the resistance change to 10 Ω or more?	Replace the control module whose resistance has changed. When the value changed at disconnecting the body integrated unit, Go to step 3 .	Repair or replace the short circuit of the main wiring harness and related lines between body integrated unit and VDC CM.
3 CHECK MAIN WIRING HARNESS AND RELATED LINES. Using the tester, measure the resistance between terminals. Connector & terminal (i84) No. 27 - Chassis ground: (i84) No. 35 - Chassis ground:	Is the resistance 10 Ω or less?	Repair or replace the short circuit of the main wiring harness and related lines between body integrated unit and ECM.	Replace the body integrated unit. Refer to REMOVAL .
4 CHECK BETWEEN RELATED LINES AND MAIN WIRING HARNESS. Turn the ignition switch to ON. Using the tester, measure the voltage between terminals. Connector & terminal (B40) No. 6 (+) - Chassis ground (-): (B40) No. 14 (+) - Chassis ground (-):	Is the voltage 5 V or less?	CAN communication circuit is normal.	Go to step 5 .
5 CHECK CONTROL MODULE. With the tester connected, disconnect control module. (Disconnect the body integrated unit at the end.) Connector & terminal (B40) No. 6 (+) - Chassis ground (-): (B40) No. 14 (+) - Chassis ground (-):	Did the voltage change to 5 V or less?	Replace the control module whose voltage has changed. When the voltage changed at disconnecting the body integrated unit, Go to step 6 .	Repair or replace the short circuit of the main wiring harness and related lines between body integrated unit and VDC CM.
6 CHECK HARNESS. Using a tester, measure the voltage between terminals and chassis ground. Connector & terminal (i84) No. 27 (+) - Chassis ground (-): (i84) No. 35 (+) - Chassis ground (-):	Is the voltage 5 V or less?	Replace the body integrated unit. Refer to REMOVAL .	Repair or replace the short circuit of the main wiring harness and related lines between body integrated unit and ECM.