166787 - G02 HANDBRAKE LOCKING

The handbrke remains locked on; The fault is usually signalled by the handbrake warning light;

If the system is working manually, if a change of state (off/on) is requested through the button, the system signals any fault (impossibility of changing state) through a buzzer.

STEP	OPERATIONS TO BE CARRIED OUT	TEST RESULTS
1	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Connect the Examiner diagnostic equipment to the diagnostic connector and check the following at the CAN: no control unit not activated; that there are no faulty control units; no control unit with faulty CAN line;	Move on to Step	1. Control unit faulty	Continue following the instructions in the diagnostic table
			2. Control units with faulty CAN line	2. Continue following the instructions in the diagnostic table
2	CHECK USING DIAGNOSTIC EQUIPMENT	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Using the Examiner diagnostic equipment connected to the diagnostic connector at the Brake Parking Node (N.P.B.): in error environment that there are no faults	Move on to Step	1. Presence of errors	1. Continue following the instructions in the diagnostic table
			2. Handbrake switch error	Move on to Step
3	ELECTRICAL SYSTEM CHECK.	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check the operation of the handbrake switch [see test 3380AB] and the continuity/insulation of the connections between the switch and the Parking Brake Node (N.P.B.) (Wiring Diagram ) E7025 ELECTRIC HANDBRAKE	Move on to Step	1. Switch faulty	1. Replace the switch
			2. Connections broken/not insulated	2. Restore the electrical connections (Wiring Diagram ) E7025 ELECTRIC HANDBRAKE
4	CHECK ON CORRECT OPERATION	ALL OK	PROBLEMS ENCOUNTERED	ACTION
	Check that the fault is no longer present