Engine Compression: Notes
WARNING: This page does not describe the selected car, but rather 17 other vehicles, including the 2001 Toyota Tundra, 2001 Toyota Tacoma, 2001 Toyota Sienna, 2001 Toyota Sequoia, and 2001 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
Check engine compression with engine at cranking speed with battery fully charged, engine at normal operating temperature, electrical connector disconnected at ignition coil if ignition coil is not removed for access to spark plugs, all spark plugs removed and throttle wide open.
WARNING:
On Prius, read service precautions before proceeding with service procedure. See SERVICE PRECAUTIONS .
NOTE:
On Prius, when checking compression, connect scan tool to data link connector No. 3 located below driver's side of instrument panel and follow scan tool instructions to select cranking mode. This will automatically set cranking speed to 250 RPM and set throttle at wide open position.