194002887 - Y047 P0638 - THROTTLE VALVE CONTROL (AC)

The diagnostic equipment signals: Error P0638 (throttle valve control), with detail "open circuit"

This error is detected if there is a break in the circuit connected to Pin 59 of the junction unit for at least 0.24 secs.

1	CHECK ON THROTTLE CASING OPERATION	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the integrated throttle casing actuator is working properly by carrying out the    See Test 1060GO CHECK ON OPERATION OF MOTORIZED THROTTLE CASING	End of diagnosis