DTC P0708 At Range Switch Not Inputted: Wiring Diagram

WARNING: This page is about a different variant/trim than selected.

Fig 1: Inhibitor Switch - Wiring Diagram

G06651855

Courtesy of SUBARU OF AMERICA, INC.

DIAGNOSTIC PROCEDURE

Step	Check	Yes	No
1 CHECK INPUT SIGNAL FOR TCM. Turn the ignition switch to ON. Move the select lever to each range, read the data of "P, R, N, D range" using the Subaru Select Monitor.	Is the display of the corresponding range "ON"?	Go to step 7 .	Go to step 2 .
2 CHECK HARNESS. Turn the ignition switch to OFF. Disconnect the TCM and transmission connectors. Measure the resistance of harness between TCM connector and transmission connector. Connector & terminal (B54) No. 5 - (B12) No. 3: (B54) No. 18 - (B12) No. 2: (B54) No. 9 - (B12) No. 1: (B54) No. 22 - (B12) No. 8:	Is each resistance less than 1 Ω?	Go to step 3 .	Repair the open circuit of harness.
3 CHECK HARNESS. Measure the resistance of harness between transmission connector and transmission ground. Connector & terminal (B12) No. 4 - Transmission ground:	Is the resistance less than 1 Ω?	Go to step 4 .	Repair the open circuit of harness.
4 CHECK HARNESS. Disconnect the inhibitor switch connector. Measure the resistance between transmission connector and inhibitor switch connector. Connector & terminal (T3) No. 3 - (T7) No. 2: (T3) No. 2 - (T7) No. 5: (T3) No. 1 - (T7) No. 3: (T3) No. 8 - (T7) No. 4: (T3) No. 4 - (T7) No. 1:	Is each resistance less than 1 Ω?	Go to step 5 .	Repair the open circuit of harness.
5 CHECK INHIBITOR SWITCH. Move the select lever to each range, and measure the resistance between inhibitor switch connector terminals Connector & terminal (T7) No. 2 - (T7) No. 1: (T7) No. 5 - (T7) No. 1: (T7) No. 3 - (T7) No. 1: (T7) No. 4 - (T7) No. 1:	Is the resistance of the corresponding range less than 1 MΩ?	Go to step 6 .	Replace the inhibitor switch. Ref. to INHIBITOR SWITCH .
6 CHECK HARNESS. Turn the ignition switch to ON. Measure the voltage between each connector and chassis ground. Connector & terminal Transmission connector (B12 side) (B12) No. 3 (+) - Chassis ground (-): (B12) No. 2 (+) - Chassis ground (-): (B12) No. 1 (+) - Chassis ground (-): (B12) No. 8 (+) - Chassis ground (-): (B12) No. 4 (+) - Chassis ground (-): Transmission connector (T7 side) (T7) No. 2 (+) - Chassis ground (-): (T7) No. 5 (+) - Chassis ground (-): (T7) No. 3 (+) - Chassis ground (-): (T7) No. 4 (+) - Chassis ground (-): (T7) No. 1 (+) - Chassis ground (-):	Is each voltage less than 1 V?	Go to step 7 .	Repair the harness which outputs 1 V or more.
7 CHECK FOR POOR CONTACT.	Is there poor contact between TCM, inhibitor switch, transmission ground?	Repair the poor contact.	Check the TCM.