Control Valve

Check resistance between the terminals of the clutch pressure solenoid valve, 2-4WD shift solenoid valve, clutch pressure switch, line pressure switch and the transfer fluid temperature sensor. Refer to "COMPONENT INSPECTION " (clutch pressure solenoid valve), "COMPONENT INSPECTION " (2-4WD solenoid valve), "COMPONENT INSPECTION " (clutch pressure switch), "COMPONENT INSPECTION " (line pressure switch) and "COMPONENT INSPECTION " (transfer fluid temperature sensor).

Fig 1: Identifying Clutch Pressure Solenoid Valve, 2-4WD Shift Solenoid Valve, Clutch Pressure Switch
Check the sliding faces of the control valves and plugs for abnormality. If any is found, replace the control valve assembly with a new one. Refer to "CONTROL VALVE ".
CAUTION: Replace control valve body together with clutch return spring as a set.

Fig 2: Identifying Control Valve Overall Length
Check each control valve spring for damage or distortion. Also check its free length, outer diameter and wire diameter. If any damage or fatigue is found, replace the control valve body with a new one. Refer to "RETURN SPRING ".
CAUTION: Replace control valve body together with clutch return spring as a set.

Fig 3: Checking Wire Diameter