Centinel System – Master Repair Manual – 019-139   Centinel™ Control Solenoid Circuit

Heavy-Duty

The solenoid circuits are the supply and return wires in the wiring harness to each of the solenoids. The return wires go from the wiring harness at the Centinel™ control module to the 2-pin connector of the solenoid wires that connect to each solenoid. The supply wires go from the power relay to the 2-pin connector of the solenoid wires that connect to each solenoid.

High-Horsepower

The solenoid circuits are the supply and return wires in the wiring harness to each of the solenoids. The return wires go from the terminal of the battery to the 2-pin connector of the solenoid wires that connect to each solenoid. The supply wires go from the wiring harness at the Centinel™
control module to the 2-pin connector of the solenoid wires that connect to each solenoid.

Disconnect the wiring harness from the Centinel™ control module and check for damaged pins.

The resistance value of the solenoid circuit is very low. The solenoid resistance is also temperature sensitive. To read an accurate resistance value, the resistance of the multimeter must be subtracted from the total resistance of the solenoid circuit.

NOTE: Use a digital multimeter for this procedure. Use Cummins digital multimeter, Part Number 3377161, or a multimeter with the same accuracy of
±1/2 percent.

Turn the multimeter to the ON position. Set the multimeter range to the lowest ohm scale. Measure the resistance across the two test leads. This is the multimeter resistance value that will be subtracted from the solenoid resistance value.