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Home >> Land Rover >> 2011 >> LR2 Base >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Electronic Engine Controls >> Electronic Engine Controls (I6 3.2L Petrol) >> Description & Operation >> Electronic Engine Controls (3.2L) >> Sensors >> Stop Lamp Switch

Stop Lamp Switch

GJ0021493Courtesy of JAGUAR CARS, INC.

The stop lamp switch is attached to the brake pedal bracket, adjacent to the speed control inhibit switch. When the brake pedal is pressed, a plate on the pedal moves away from the switch plunger allowing the plunger to extend and complete the switch contacts.

The switch receives a permanent, fused battery voltage via the BJB and the CJB. The switch is connected to the ECM which provides the ground path. The ground (battery voltage signal) is used by the ECM as a switch operation signal. The ground from the switch is routed via the CJB to the ECM which allows the CJB to also determine the switch operation.

The CJB uses the completed ground when the switch is operated to activate the stop lamps.

The ECM can diagnose the operation of the stop lamp switch and the status of the switch can be read using a Land Rover approved diagnostic system.

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