Transfer Clutch Pressure Test: Inspection

• MPT MODEL

  Check the transfer clutch pressure in accordance with the following chart in the same manner as with line pressure.

  ST 32005118 OIL PRESSURE ADAPTER SET 

  ST 32005111 OIL PRESSURE GAUGE ASSY 

  AWD mode: "D" range

  FWD mode: "P" range, engine speed 2,000 RPM

  NOTE: Before setting in FWD mode, install the spare fuse on FWD switch.
  Fig 1: Identifying Test Plug

  Courtesy of SAAB-SCANIA OF AMERICA, INC.
  1. Test plug
  NOTE: If the oil pressure is not produced or if it does not change in the AWD mode, the transfer duty solenoid or transfer valve assembly may be malfunctioning. If the oil pressure is produced in the FWD mode, the problem is similar to that in the AWD mode.
• VTD MODEL

  Check transfer clutch pressure using the following chart.

  ST 32005118 OIL PRESSURE ADAPTER SET 

  ST 32005111 OIL PRESSURE GAUGE ASSY 

  Fig 2: Identifying Test Plug

  Courtesy of SAAB-SCANIA OF AMERICA, INC.
  1. Test plug

STANDARD TRANSFER CLUTCH PRESSURE: 

• Saab 9-2X 2.5i Linear
  PRESSURE REFERENCE
  
  

  Range position	ON Duty ratio (%)	Acceleration opening angle (%)	AWD mode Transfer clutch pressure (kPa (kg/cm2 , psi))	FWD mode Transfer clutch pressure (kPa (kg/cm2 , psi))
  D	95	100 (Fully opens)	910 - 1,070 (9.3 - 10.9, 132 - 155)	-
  D	60	Adjust ON Duty ratio to 60%.	410 - 490 (4.2 - 5.0, 59 - 71)	-
  N or P	5	0 (Fully closed)	0	-
  D	5	0 (Fully closed)	-	0

• Saab 9-2X 2.0T Aero
  PRESSURE REFERENCE
  
  

  Range position	ON Duty ratio (%)	Acceleration opening angle (%)	AWD mode Transfer clutch pressure (kPa (kg/cm2 , psi))
  2	95	100 (Fully opens)	1,000 - 1,200 (10.2 - 12.2, 145 - 174)
  2	60	Adjust ON Duty ratio to 60%.	500 - 700 (5.1 - 7.1, 72.5 - 102)
  N or P	5	0 (Fully closed)	0