DTC P0705 Transmission Range Sensor Circuit (PRNDL Input): Wiring Diagram

Fig 1: Inhibitor Switch - Wiring Diagram

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 display "OFF" for the range other than corresponding range?	Go to step 5  .	Go to step 2  .
2 CHECK HARNESS.  Turn the ignition switch to OFF. Disconnect the TCM and transmission connectors. Measure the resistance between TCM connector and chassis ground. Connector & terminal  (B54) No. 5 - Chassis ground: (B54) No. 18 - Chassis ground:  (B54) No. 9 - Chassis ground:  (B54) No. 22 - Chassis ground:	Is each resistance 1 MΩ or more?	Go to step 3  .	Repair the short circuit of harness.
3 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:	Is each resistance 1 MΩ or more?	Go to step 4  .	Repair the short circuit of harness.
4 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 other than corresponding range 1 MΩ or more?	Go to step 5  .	Replace the inhibitor switch. Ref. to INHIBITOR SWITCH .
5 CHECK FOR POOR CONTACT.	Is there poor contact between TCM, inhibitor switch, transmission ground?	Repair the poor contact.	Check the TCM.