S 500 Sedan (140.051) V8-5.0L (119.980) (1996)
Control Module HVAC: Description and Operation
Idle Speed Increase Via Diode Matrix
Idle Speed Increase Via Diode Matrix
Diode Matrix (V2)
A control voltage from the blower regulator greater than 2.5 volts will increase the engine idle speed via the diode matrix (V2).