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Home >> Lexus >> 1997 >> SC 400 >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Cruise Control Systems >> Circuit Testing >> Input Signal Circuits >> Notes

Input Signal Circuits: Notes

Use this procedure to determine whether cruise control ECU is receiving input signals from various switches and speed sensor. To perform procedure, enter diagnostic mode, then check if CRUISE indicator light responds as it should. See Figure.

NOTE: If diagnostic mode cannot be entered, perform procedure for Code 32. See DTC TEST 32: CRUISE CONTROL SWITCH CIRCUIT  under DTC TESTS.