Contents

		Test results
1	BRAKE PEDAL SWITCH CHECK	All OK	Problems encountered	Operation
	Check that the brake pedal switch is working properly See Test 5550DA BRAKE PEDAL SWITCH OPERATION CHECK	Go to Step 2	1. Brake pedal switch connection faulty 2. Brake pedal switch faulty	1. Restore the correct engine connections See E5060 CRUISE CONTROL 2. Replace the brake pedal switch Op. 5550D10 BRAKE LIGHT SWITCH - R+R
2	ENGINE MANAGEMENT CONTROL UNIT CONNECTIONS CHECK	All OK	Problems encountered	Operation
	With the ignition key in the MAR position and the brake pedal pressed, check for a voltage signal at the engine management control unit coming from the brake switch See E5060 CRUISE CONTROL	Go to Step 3	No voltage detected	Restore the correct engine connections See E5060 CRUISE CONTROL
3	CORRECT OPERATION CHECK	All OK	Problems encountered	Operation
	Check that the fault is no longer present	End of diagnosis	The fault persists: engine control unit defective	Replace the engine management control unit Op. 1056B82 INJECTION/IGNITION SYSTEM E.C.U. (ONE) - R + R