4WD Control System

4WD Control System





1. Install special tool to air hose connecting between air pump assembly and differential (actuator) as shown in figure. Tighten adjusting screw of special tool as far as it stops. Close air check side opening by using fuel hose as blind plug.
Special Tool
(A): 09918-18110
(B): 09367-04002

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

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.
Pressure specification:
38.0 - 58.0 kPa (0.38 - 0.58 kg/cm2, 5.40 - 8.25 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 to lower pressure value on gauge. Motor should start to run again and stop in about 4 seconds.
6. With the adjusting screw 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.