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Home >> Toyota >> 2001 >> Sienna CE >> Repair and Diagnosis >> External Pages >> Different car >> Section 15 (Engine Controls - Basic Diagnostic Procedures - 4-Cylinder) >> Preliminary Inspection & Adjustments >> Mechanical Inspection >> Compression (Prius)

Compression (Prius)

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2002 Toyota Tacoma, 2002 Toyota RAV4, 2002 Toyota Prius, 2002 Toyota MR2, and 2002 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
WARNING: Read service precautions before proceeding with service procedure. See SERVICE PRECAUTIONS .
  1. Manufacturer states procedure using Toyota hand-held tester. Warm engine to normal operating temperature. Shut engine off. Remove air cleaner assembly. Disconnect electrical connectors at ignition coils. Remove ignition coils and spark plugs.
  2. Connect Toyota hand-held tester to data link connector No. 3 at driver's side of instrument panel. See Figure. Select CRANKING MODE on Toyota hand-held tester using hand-held tester instructions.
  3. Connect compression gauge. Crank the engine and note the compression. While in the CRANKING MODE, cranking speed is automatically set at 250 RPM and throttle is automatically opened to fully open position. Read compression in a short a time as possible. Ensure compression is within specification. See COMPRESSION SPECIFICATIONS  table. Remove hand-held tester. Install and tighten spark plugs to 13 ft. lbs. (18 N.m) and ignition coil retaining bolts to 80 INCH lbs. (9.0 N.m).
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