DTC P2746 Primary Pulley Revolution Speed Sensor Circuit: Wiring Diagram

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

CVT Control System. See appropriate SYSTEM WIRING DIAGRAM article.

Fig 1: CVT Control System - Wiring Diagram (Primary Pulley Revolution Speed Sensor)

Courtesy of SUBARU OF AMERICA, INC.

DIAGNOSTIC PROCEDURE

Step	Check	Yes	No
1 CHECK FUSE. Turn the ignition switch to OFF. Remove the M/B fuse (No. 38).	Is the fuse OK?	Go to step 2 .	Replace the fuse. If the fuse blows out easily, repair the short circuit of harness.
2 CHECK HARNESS. Turn the ignition switch to OFF. Disconnect the TCM and transmission connectors. Measure the resistance between TCM connector and transmission connectors. Connector & terminal (B54) No. 1 - (B12) No. 7: (B54) No. 6 - (B12) No. 8: (M/B No. 38) No. 2 - (B12) No. 6:	Is the resistance less than 1 Ω?	Go to step 3 .	Repair the open circuit of harness.
3 CHECK HARNESS. Measure the resistance between TCM connector and chassis ground. Connector & terminal (B54) No. 6 - Chassis ground:	Is the resistance 1 MΩ or more?	Go to step 4 .	Repair the short circuit of harness.
4 CHECK TRANSMISSION HARNESS. Connect the TCM connector. Turn the ignition switch to ON. Measure the voltage between transmission connector terminals. Connector & terminal (B12) No. 6 (+) - (B12) No. 7 (-):	Is the voltage 10 - 13 V?	Go to step 5 .	Repair the open circuit of harness or poor contact of connector.
5 CHECK INPUT SIGNAL FOR TCM. Turn the ignition switch to OFF. Connect the transmission connector. Lift up the vehicle. Start the engine. Set the select lever to "D" range. Read the data of «Primary Pulley Speed» using Subaru Select Monitor.	Does the value of «Primary Pulley Speed» change according to those of «Turbine Revolution Speed»?	Current condition is normal. Repair the poor contacts of harnesses of primary speed sensor and transmission connector.	Go to step 6 .
6 CHECK TRANSMISSION HARNESS. Turn the ignition switch to OFF. Disconnect the transmission connector. Disconnect the primary speed sensor connector. Measure the resistance between transmission connector and primary speed sensor connector. Connector & terminal (T3) No. 6 - (AT1) No. 3: (T3) No. 7 - (AT1) No. 1: (T3) No. 8 - (AT1) No. 2:	Is the resistance less than 1 Ω?	Replace the primary speed sensor. Refer to PRIMARY SPEED SENSOR .	Replace the transmission harness.