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1992-93 SC300 & SC400 (Ported EGR Valve)

WARNING: This page does not describe the selected car, but rather 49 other vehicles, including the 2014 Lexus RX 450h, 2014 Lexus GX 460, 2014 Lexus ES 300h, 2014 Lexus CT 200h, and 2013 Lexus RX 450h. However, it is still accessible from the selected car via links, so may be relevant.
  1. Connect tachometer to terminal IG of check connector. Using jumper wire, jumper check connector terminals TE1 and E1. Operate engine at 3500 RPM with transmission in Neutral. Remove jumper wire.
  2. With coolant temperature at or less than 113°F (45°C), no increase in engine RPM should be noted. With coolant temperature at least 122°F (50°C), engine RPM should increase.
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