LEMON Manuals: Even more car manuals for everyone
Home >> Mazda >> 1990 >> 626 DX, 2.2, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Engine Sensors & Switches >> Coolant Temperature Switch

Coolant Temperature Switch

  1. Remove both switches from radiator hose flange. See Fig 1 . Place each switch individually in container of engine oil with thermometer. Heat engine oil slowly and check for continuity of switch with an ohmmeter.
  2. Continuity should be present in switch No. 1 at temperatures greater than 207°F (97°C). Continuity should be present in switch No. 2 at temperatures greater than 226°F (108°C). Replace switch(s) if not operating as described.
NOTE: DO NOT heat engine oil above 248°F (120°C).
Fig 1: Locating Coolant Temperature Switches
G90J18373Courtesy of MAZDA MOTORS CORP.
scientia non olet · About LEMON Manuals