4WD Control System Inspection

Inspection
1) Install special tool to air hose connecting between air pump assembly and differential (actuator) as shown in figure. Tighten adjusting screw (2) of special tool as far as it stops. Close air check side opening by using fuel hose (1) as blind plug.

NOTE: Use care not to bend any part of hose.

Special tool (A): 09918-18110
SUZUKI genuine parts (B):09367-04002
2) Turn ON ignition switch and shift transfer lever from 2H to 4H range.
3) Check that motor starts running (a sound can be heard) within 1 second and it stops when gauge of special tool indicates specified pressure value. Check also for air leakage.
Air pressure specification (for 4WD control system inspection) 30.0 - 45.0 kPa (0.30 - 0.45 kgf/cm2, 4.25 - 6.40 psi)
4) Check that pressure value indicated on gauge of special tool drops as soon as transfer lever is shifted to 2H position.
5) Start motor by shifting transfer lever to 4H position again. Loosen adjusting screw (2) to lower pressure value on gauge. Motor should start to run again and stop in about 4 seconds.





6) With the adjusting screw (2) of special tool loosened, shift transfer shift lever to N or 2H position and then 4L or 4H position. Pump motor should stop about 10 seconds after motor starts to run.