RENR5042-02 167 Troubleshooting Section Results: Repair: Repair the connectors or wiring and/or replace the connectors or wiring. Ensure that all of the seals are properly in place and ensure that the connectors are completely coupled. OK The connectors and wiring are OK. If the engine is equipped with a customer connector, proceed to Test Step 2. Otherwise, proceed to Test Step 3. Verify that the repair eliminates the problem. Not OK – There is a problem with the connectors and/or the wiring. STOP. Repair: Repair the wiring and/or the connectors. Replace parts, if necessary. Ensure that all of the seals are properly connected. Verify that the repair eliminates the problem. Test Step 3.
Check the Inputs from the Switches at the J1 Connector A. Disconnect the P1 connector. STOP. B. Refer to Table 19. Connect a voltage test lamp between the input for the suspect switch circuit and terminal J1-48 (+Battery). Test Step 2. Check the Inputs from the Switches at the J61 Customer Connector Table 19 A. Disconnect the J61 connector. B. Refer to Table 18. Connect a voltage test lamp between the input for the suspect switch circuit and terminal J61-31 (+Battery). Table 18 C. Observe the voltage test lamp as you operate the suspect switch. Expected Result: The voltage test lamp turns ON when the switch is closed. The voltage test lamp turns OFF when the switch is opened. C.
Observe the voltage test lamp as you operate the suspect switch. Results: Expected Result: OK The voltage test lamp turns ON when the switch is closed. The voltage test lamp turns OFF when the switch is opened. The switch circuit is operating correctly. The problem may be in the ECM. The voltage test lamp turns on when the switch is closed. The voltage test lamp turns off when the switch is opened. Results: Repair: It is unlikely that the ECM has failed. Exit this procedure and perform this procedure again. If the problem is not resolved, temporarily install a new ECM. Refer to Troubleshooting, “Replacing the ECM”. OK The voltage test lamp turns on when the switch is closed.
The voltage test lamp turns off when the switch is opened. The circuit is operating correctly. Connect the J61 connector. Proceed to Test Step 3. If the problem is resolved with the new ECM, install the original ECM and verify that the problem returns. IF the new ECM operates correctly and the original ECM does not operate correctly, replace the original ECM. Not OK The voltage test lamp does not turn on when the switch is closed. Alternatively, the voltage test lamp does not turn off when the switch is opened. There is a problem with the suspect switch and/or the wiring. STOP.
J1 Terminals for the Inputs from the PTO Switches Switch J1 Terminals PTO Enable Switch 56 PTO Ramp Up Switch 58 PTO Ramp Down Switch 60 PTO Interrupt Switch 41 J61 Terminals for the Inputs from the PTO Switches Switch J61 Terminals PTO Enable Switch 29 PTO Ramp Up Switch 58 PTO Ramp Down Switch 60 PTO Interrupt Switch 41