341506 - D74 THE CRUISE CONTROL SYSTEM DOES NOT SWITCH OFF WHEN THE BRAKE PEDAL IS PRESSED

STEP	OPERATIONS TO BE CARRIED OUT	TEST RESULTS
1	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Connect the diagnostic test equipment (Examiner or other instruments) to the tester input.Check for the presence of faults in the engine management control unit	Move on to Step	1. Error detected in the control unit	1. Continue following the instructions for the diagnostic equipment
			2. No communication with the control unit	2. Restore the connection between the engine management control unit and the diagnostic connector (Wiring Diagram ) E5060 CRUISE CONTROL
2	BRAKE PEDAL SWITCH CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the brake pedal switch is working properly	Move on to Step	Brake pedal switch faulty	Replace the brake pedal switch    See in Op. 5550D10 brake light switch - r+r
3	ENGINE MANAGEMENT CONTROL UNIT CONNECTIONS CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Keeping the key in the ON position, check for a voltage signal at the engine management control unit coming from the brake pedal switch (Wiring Diagram ) E5060 CRUISE CONTROL	Move on to Step	No voltage detected	Move on to Step
4	ENGINE MANAGEMENT CONTROL UNIT CONNECTIONS CHECK	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the continuity of the connections between the switch, junction unit, brake switch and engine management control unit (Wiring Diagram ) E5060 CRUISE CONTROL	Move on to Step	No continuity	Repair the engine connections (Wiring Diagram ) E5060 CRUISE CONTROL
5	CHECK ON CORRECT OPERATION	ALL OK	PROBLEMS ENCOUNTERED	ACTION
2.4 20 V,2.0 TB,3.0 V6	Check that the fault is no longer present		Fault persists control unit defective	Replace the engine management control unit    See in Op. 1056B82 Injection/ignition system CONTROL UNIT (one) - R.R.
5	CHECK ON CORRECT OPERATION	ALL OK	PROBLEMS ENCOUNTERED	ACTION
2.4 JTD 10V	Check that the fault is no longer present		Fault persists control unit defective	Replace the engine management control unit    See in Op. 1060G80 Diesel electronic injection system CONTROL UNIT - R.R.