2893

Possible Causes

• •Aux 102 1 Discrete Input #3 active state selection parameter is configured incorrectly
• •Condition for which Discrete Input #3 is configured for is active
• •Faulty switch unit
• •Shorted low condition at J4-3 (switch input) side
• •Shorted low condition at J4-3 (switch input) side of wiring harness

Suggested Actions

1. 1Disconnect the wiring harness and test resistance of the wiring between the switch's output leads (input and return) and input leads at the base board (value should be less than 10 ohms)
2. 2Disconnect wiring harness and test resistance of wiring between switch output leads and input leads at base board (should be < 10 ohms)
3. 3Press the Reset button on operator panel to clear fault
4. 4Press the Reset button on the operator panel after the issue is resolved to clear the fault
5. 5Test resistance from switch output leads to all other pins in harness connector (should be > 100k ohms)
6. 6Test resistance from the switch's output leads (input and return) to all other pins in the harness connector (value should be greater than 100k ohms)
7. 7Using the InPower service tool or operator panel, navigate to Setup > Aux 101 Setup and verify that the switch input setting (active closed or active open) for Discrete Input #3 is set correctly
8. 8Verify condition for which Discrete Input #3 has been configured
9. 9Verify switch input setting (active closed or active open) for Discrete Input #3 via InPower service tool or operator panel (Setup > Aux 101 Setup)
10. 10Verify the condition for which Discrete Input #3 has been configured
11. 11Verify the wiring harness running from the switch plug to the AUX 102 board for shorted low condition at the J4-3 (switch input) side
12. 12Verify wiring harness running from switch plug to AUX 102 board for shorted low condition at J4-3 side
13. 13Visually inspect switch for proper operation, intended range of movement, and functionality
14. 14Visually inspect the switch for proper operation, intended range of movement, and functionality
15. 15With switch disconnected, measure resistance from J4-3 input pin to engine block ground (should be > 100k ohms)
16. 16With the switch disconnected, measure the resistance from the J4-3 input pin to the engine block ground (value should be more than 100k ohms)

Related Cummins Fault Codes