Vacuum Modulator Inspection
- Disconnect negative battery cable, then positive cable. Remove battery from vehicle. Disconnect kickdown solenoid connector (under battery tray). Raise and support vehicle.
- Remove left splash shield from vehicle. Remove kickdown solenoid from transaxle by turning it counterclockwise. Remove vacuum hose and pipe from vacuum modulator. Remove vacuum modulator by turning counterclockwise. Remove diaphragm rod.
- Inspect modulator for fluid leakage. With diaphragm rod in place, test for vacuum leakage by attaching vacuum pump to fitting on vacuum modulator. Apply 20 in. Hg of vacuum to modulator. If vacuum gauge on pump indicates a vacuum loss, replace vacuum modulator. Inspect vacuum modulator "O" ring for cuts and other damage. To install components, reverse removal procedure.