Test Methods

MPT model
Check the transfer clutch pressure in accordance with the following chart in the same manner as with line pressure. See LINE PRESSURE TEST .
1. ST 498897700 OIL PRESSURE ADAPTER SET
2. ST 498575400 OIL PRESSURE GAUGE ASSY
3. AWD mode: "D" range
4. FWD mode: "P" range, engine speed 2,000 rpm
CAUTION: Before setting in FWD mode, install the spare fuse on FWD mode switch.

Fig 1: Identifying Test Plug (MPT Model)
Courtesy of SUBARU OF AMERICA, INC.
VTD model
Check the transfer clutch pressure in accordance with the following chart in the same manner as with line pressure.
1. ST 498897700 OIL PRESSURE ADAPTER SET
2. ST 498575400 OIL PRESSURE GAUGE ASSY
Fig 2: Identifying Test Plug (VTD Model)
Courtesy of SUBARU OF AMERICA, INC.