DR-15B Vacuum Supply to Wastegate Solenoid

Complete Driveability Test 15, Step A before proceeding.

1. Disconnect vacuum line from top of wastegate solenoid and connect a vacuum gauge.
2. Start engine and observe gauge.
3. If gauge indicates manifold vacuum, check wastegate and MAP sensor calibration and correct as necessary.
4. If vacuum gauge indicates no vacuum, locate and repair restriction or leak in vacuum line to nipple.