Waste Gate Solenoid

Wastegate Solenoid Circuit:

To test the operation of the wastegate solenoid, proceed as follows.

SOLENOID TEST
1. Mark and disconnect the vacuum hose (black with a white stripe) from the solenoid valve.
2. Disconnect the electrical harness connector.
3. Connect a manual vacuum pump to the nipple the white striped hose was removed from.

Solenoid Operational Test:

4. Attempt to apply a vacuum while Voltage is applied to the solenoid valve, verify that the valve does not hold vacuum.
5. Remove power from the solenoid valve and verify that the solenoid valve holds vacuum.

Solenoid Resistance Check:

6. Measure the resistance between the two terminals of the solenoid valve, and verify that the resistance is between 36 and 44 Ohms at 20 degrees C (68 degrees F).



HARNESS TEST
1. Disconnect the solenoid connector and turn the key to the ON position.
2. Using a volt meter, check the Voltage between solenoid harness connector terminal 2 and ground.

Voltage
System Voltage

3. Turn the key to the OFF position and disconnect the ECU harness connector.
4. Using an ohm meter, check for continuity between ECU harness connector terminal 105 and solenoid harness connector terminal 1.

Continuity
Should exist

5. Using an ohm meter, check for continuity between ECU harness connector terminal 105 and ground.

Continuity
Should not exist

If any of the previous tests produce unsatisfactory results, the harness will need to be repaired or replaced. Once repairs have been completed, road test the vehicle to confirm that the repair has corrected the problem.

If the same problem reoccurs, it is possible that there is an intermittent failure of the component or the ECU. Check for looseness at all harness junctions and test for an intermittent failure.