Tiburon L4-2.0L (1999)
Vacuum Pump: Testing and Inspection
SOLENOID VALVE (CONTROL VALVE, RELEASE VALVE)
1. Remove the auto-cruise vacuum pump connector.
2. Measure the resistance value between connector terminal 1 and 2, and connector terminals 2 and 4.
Standard value: 50 - 60 Ohms
3. Check that the solenoid valve makes an operating noise when battery voltage is impressed between terminals 2 and 1, and connector terminals 2
and 4.
4. If there is a malfunction of the solenoid valve. Replace the cruise vacuum pump assembly.
MOTOR
1. Remove the cruise vacuum pump connector.
2. Check that the motor revolves when battery voltage applied between connector terminals 2 and 3.
ACTUATOR
1. Remove the actuator.
2. Apply negative pressure to the actuator with the vacuum pump and check that the holder moves more than 35mm (1.38 in.). In addition, check that
there is no change in the position of the holder when negative pressure Os maintained in then inspect and adjust the cruise control cable.
