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CM871 and CM876 Electronic Control Systems, ISX and ISM Engines – 019-036   Engine Brake Level Switch

Table of Contents

Resistance Check

Resistance Check

 TOC

If INSITE™ electronic service tool is available, monitor the engine brake level switch for proper operation. If INSITE™ electronic service tool is not available then refer to the tables below for the type of switch the vehicle is configured with.

Label the wires with the location on the switch or the wire number. Disconnect the four electrical connectors from the switch.

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Six-Position Switch

Switch Terminal C Terminal B Terminal A
Position Engine Brake
Selector Signal #3		 Engine Brake
Selector Signal #2		 Engine Brake
Selector Signal #1
1 Open Open Closed
2 Open Closed Open
3 Closed Open Open
4 Closed Open Closed
5 Closed Closed Open
6 Closed Closed Closed

Three-Position Switch

Switch Terminal C Terminal B Terminal A
Position Engine Brake
Selector Signal #3		 Engine Brake
Selector Signal #2		 Engine Brake
Selector Signal #1
1 Open Closed Open
2 Closed Open Closed
3 Closed Closed Closed

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Last Modified:  14-Feb-2006
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